diff --git a/completions/tpc.bash b/completions/tpc.bash
index a0bff312..f2758804 100644
--- a/completions/tpc.bash
+++ b/completions/tpc.bash
@@ -144,7 +144,7 @@ _typephp_tpc()
             return
             ;;
         -* )
-            COMPREPLY=( $(compgen -W '--nano -O --optimize -o --output -h --help -v --version --profile --no-literal-strings --php-version -f --force -m --mode -r --run --debug -j --job --no-console --sanitize --cxx-std --march --compiler --target-platform --no-color --build-dir --dry -I --include-path -D --define --no-progress --lto --format -l --link-lib -L --link-path --full-static --wasm --wasm= --gen-python-helper --convert-python-to-php --output-dir --output-dir= --build-dir= --generate-completion=' -- "$current") )
+            COMPREPLY=( $(compgen -W '--nano -O --optimize -o --output -h --help -v --version --profile --no-literal-strings --php-version -f --force -m --mode --sapi -r --run --debug -j --job --no-console --sanitize --cxx-std --march --compiler --target-platform --no-color --build-dir --dry -I --include-path -D --define --no-progress --lto --format -l --link-lib -L --link-path --full-static --wasm --wasm= --gen-python-helper --convert-python-to-php --output-dir --output-dir= --build-dir= --generate-completion=' -- "$current") )
             return
             ;;
     esac
diff --git a/phpunit/src/Build/EmbeddedArchiveBuilderTest.php b/phpunit/src/Build/EmbeddedArchiveBuilderTest.php
index 6dd350f0..3901d7f0 100644
--- a/phpunit/src/Build/EmbeddedArchiveBuilderTest.php
+++ b/phpunit/src/Build/EmbeddedArchiveBuilderTest.php
@@ -94,6 +94,12 @@ final class EmbeddedArchiveBuilderTest extends TestCase
             $unix,
         );
         self::assertStringNotContainsString('typephp_opcode_table_install(void) {}', $unix);
+
+        $sapi = $renderer->render($archive, '8.4.14', false, false, '/app/index.php');
+        self::assertStringContainsString(
+            'typephp_project_entry_file(void) { return "/app/index.php"; }',
+            $sapi,
+        );
     }
 
     private function write(string $name, string $contents): string
diff --git a/phpunit/src/Build/OfficialPhpSourceTest.php b/phpunit/src/Build/OfficialPhpSourceTest.php
new file mode 100644
index 00000000..7c6d3a5c
--- /dev/null
+++ b/phpunit/src/Build/OfficialPhpSourceTest.php
@@ -0,0 +1,55 @@
+<?php
+
+namespace TypePhpTest\Build;
+
+use PHPUnit\Framework\TestCase;
+use TypePhp\Build\OfficialPhpSource;
+
+final class OfficialPhpSourceTest extends TestCase
+{
+    public function testDefaultCacheUsesTypePhpHomeDirectory(): void
+    {
+        self::assertSame('/home/example/.typephp', OfficialPhpSource::defaultCacheDirectory('/home/example'));
+    }
+
+    public function testVersionIsReadFromSourceHeader(): void
+    {
+        $directory = sys_get_temp_dir() . '/typephp-source-version-' . bin2hex(random_bytes(6));
+        mkdir($directory . '/main', 0777, true);
+        file_put_contents($directory . '/main/php_version.h', '#define PHP_VERSION "8.4.14"');
+        try {
+            self::assertSame('8.4.14', OfficialPhpSource::version($directory));
+        } finally {
+            unlink($directory . '/main/php_version.h');
+            rmdir($directory . '/main');
+            rmdir($directory);
+        }
+    }
+
+    public function testCachedMinorReleaseIsUsedWithoutNetworkAccess(): void
+    {
+        $directory = sys_get_temp_dir() . '/typephp-source-cache-' . bin2hex(random_bytes(6));
+        foreach (['8.4.9', '8.4.25'] as $version) {
+            $source = $directory . '/src/php-' . $version;
+            foreach (['main', 'Zend', 'ext/standard'] as $child) {
+                mkdir($source . '/' . $child, 0777, true);
+            }
+            foreach (['configure', 'main/php.h', 'main/php_version.h', 'Zend/zend.h', 'ext/standard/fsock.h'] as $file) {
+                touch($source . '/' . $file);
+            }
+        }
+        try {
+            $manager = new OfficialPhpSource($directory, static function (string $message): void {});
+            self::assertSame($directory . '/src/php-8.4.25', $manager->prepare('8.4'));
+        } finally {
+            $iterator = new \RecursiveIteratorIterator(
+                new \RecursiveDirectoryIterator($directory, \FilesystemIterator::SKIP_DOTS),
+                \RecursiveIteratorIterator::CHILD_FIRST,
+            );
+            foreach ($iterator as $entry) {
+                $entry->isDir() ? rmdir($entry->getPathname()) : unlink($entry->getPathname());
+            }
+            rmdir($directory);
+        }
+    }
+}
diff --git a/phpunit/src/Build/SapiApplicationLinkerTest.php b/phpunit/src/Build/SapiApplicationLinkerTest.php
new file mode 100644
index 00000000..03895004
--- /dev/null
+++ b/phpunit/src/Build/SapiApplicationLinkerTest.php
@@ -0,0 +1,105 @@
+<?php
+/**
+ * This file is part of TypePHP(AOT).
+ *
+ * @link     https://www.swoole.com/aot/
+ * @contact  service@swoole.com
+ */
+
+namespace TypePhpTest\Build;
+
+use PHPUnit\Framework\TestCase;
+use TypePhp\Build\SapiApplicationLinker;
+
+/**
+ * @internal
+ * @coversNothing
+ */
+final class SapiApplicationLinkerTest extends TestCase
+{
+    private string $directory;
+
+    protected function setUp(): void
+    {
+        $this->directory = sys_get_temp_dir() . '/typephp-sapi-linker-' . uniqid('', true);
+        mkdir($this->directory . '/php/sapi/cli', 0777, true);
+        file_put_contents(
+            $this->directory . '/php/sapi/cli/php_cli.c',
+            <<<'C'
+#include "php.h"
+static zend_result cli_seek_file_begin(zend_file_handle *file_handle, char *script_file)
+{
+}
+int main(int argc, char *argv[])
+{
+	int ini_ignore = 0;
+	sapi_module_struct *sapi_module_ptr = &cli_sapi_module;
+	argv = save_ps_args(argc, argv);
+	cleanup_ps_args(argv);
+}
+C,
+        );
+        file_put_contents(
+            $this->directory . '/php/sapi/cli/php_cli_server.c',
+            <<<'C'
+#include "php.h"
+static void translate(void)
+{
+	php_sys_stat(buf, &sb);
+	php_sys_stat(buf, &sb);
+}
+C,
+        );
+    }
+
+    protected function tearDown(): void
+    {
+        $iterator = new \RecursiveIteratorIterator(
+            new \RecursiveDirectoryIterator($this->directory, \FilesystemIterator::SKIP_DOTS),
+            \RecursiveIteratorIterator::CHILD_FIRST,
+        );
+        foreach ($iterator as $entry) {
+            $entry->isDir() ? rmdir($entry->getPathname()) : unlink($entry->getPathname());
+        }
+        rmdir($this->directory);
+    }
+
+    public function testCliAdapterPrependsEmbeddedEntryToSavedArguments(): void
+    {
+        $entry = $this->directory . '/project/index.php';
+        $linker = new SapiApplicationLinker(
+            $this->directory . '/php',
+            $this->directory . '/php-build',
+            $this->directory . '/libphpx.a',
+            [],
+            $this->directory . '/project-build',
+            ['cli'],
+            $entry,
+            static function (string $message): void {},
+        );
+        $method = new \ReflectionMethod($linker, 'generateSapiAdapters');
+        $method->invoke($linker, 'sapi/cli/php_cli.lo', '');
+
+        $sources = glob($this->directory . '/project-build/cache/sapi/adapters/*/php_cli.c');
+        self::assertIsArray($sources);
+        self::assertCount(1, $sources);
+        $code = (string) file_get_contents($sources[0]);
+        self::assertStringContainsString('typephp_saved_argv = argv;', $code);
+        self::assertStringContainsString(
+            'typephp_cli_prepare_arguments(&argc, &argv, OPTIONS, &typephp_application_argv)',
+            $code,
+        );
+        self::assertStringContainsString('typephp_cli_release_arguments(typephp_application_argv);', $code);
+        self::assertStringContainsString('cleanup_ps_args(typephp_saved_argv);', $code);
+        self::assertStringNotContainsString('php_getopt(', $code);
+        self::assertStringNotContainsString('typephp_entry_script', $code);
+
+        $serverSources = glob($this->directory . '/project-build/cache/sapi/adapters/*/php_cli_server.c');
+        self::assertIsArray($serverSources);
+        self::assertCount(1, $serverSources);
+        $serverCode = (string) file_get_contents($serverSources[0]);
+        self::assertSame(2, substr_count($serverCode, 'typephp_cli_server_stat(buf, &sb)'));
+        self::assertStringContainsString('typephp_embedded_path_kind(path)', $serverCode);
+        self::assertStringNotContainsString('php_sys_stat(buf, &sb)', $serverCode);
+    }
+}
diff --git a/phpunit/src/Build/SapiBuildConfigurationTest.php b/phpunit/src/Build/SapiBuildConfigurationTest.php
new file mode 100644
index 00000000..58609df2
--- /dev/null
+++ b/phpunit/src/Build/SapiBuildConfigurationTest.php
@@ -0,0 +1,24 @@
+<?php
+
+namespace TypePhpTest\Build;
+
+use PHPUnit\Framework\TestCase;
+use TypePhp\Build\SapiBuildConfiguration;
+
+final class SapiBuildConfigurationTest extends TestCase
+{
+    public function testTargetsAcceptSingleBothAndLists(): void
+    {
+        self::assertSame(['cli'], SapiBuildConfiguration::parseTargets('cli'));
+        self::assertSame(['cli', 'fpm'], SapiBuildConfiguration::parseTargets('both'));
+        self::assertSame(['fpm', 'cli'], SapiBuildConfiguration::parseTargets(['fpm', 'cli', 'fpm']));
+        self::assertSame(['cli', 'fpm'], SapiBuildConfiguration::parseTargets('cli, fpm'));
+    }
+
+    public function testInvalidTargetIsRejected(): void
+    {
+        $this->expectException(\InvalidArgumentException::class);
+        $this->expectExceptionMessage('Expected cli, fpm, or both');
+        SapiBuildConfiguration::parseTargets('apache');
+    }
+}
diff --git a/phpunit/src/Build/SapiExtensionRequirementsTest.php b/phpunit/src/Build/SapiExtensionRequirementsTest.php
new file mode 100644
index 00000000..f1bcb936
--- /dev/null
+++ b/phpunit/src/Build/SapiExtensionRequirementsTest.php
@@ -0,0 +1,102 @@
+<?php
+/**
+ * This file is part of TypePHP(AOT).
+ *
+ * @link     https://www.swoole.com/aot/
+ * @contact  service@swoole.com
+ */
+
+namespace TypePhp\Tests\Build;
+
+use PHPUnit\Framework\TestCase;
+use TypePhp\Build\PhpSourceExtensionIndex;
+use TypePhp\Build\SapiExtensionConfiguration;
+use TypePhp\Build\SapiExtensionRequirements;
+
+/**
+ * @internal
+ * @coversNothing
+ */
+final class SapiExtensionRequirementsTest extends TestCase
+{
+    private string $directory;
+
+    protected function setUp(): void
+    {
+        $this->directory = sys_get_temp_dir() . '/typephp-sapi-ext-' . bin2hex(random_bytes(6));
+        mkdir($this->directory, 0777, true);
+    }
+
+    protected function tearDown(): void
+    {
+        if (is_dir($this->directory)) {
+            exec('rm -rf ' . escapeshellarg($this->directory));
+        }
+    }
+
+    public function testComposerRequireExtensionsAreNormalizedAndSorted(): void
+    {
+        mkdir($this->directory . '/vendor/package/name', 0777, true);
+        file_put_contents($this->directory . '/vendor/autoload.php', '<?php');
+        $embedded = $this->directory . '/vendor/package/name/file.php';
+        file_put_contents($embedded, '<?php');
+        file_put_contents($this->directory . '/composer.json', json_encode([
+            'require' => [
+                'php' => '^8.4',
+                'ext-Zend-OPcache' => '*',
+                'ext-pdo_mysql' => '*',
+            ],
+            'require-dev' => ['ext-xdebug' => '*'],
+        ], JSON_THROW_ON_ERROR));
+
+        self::assertSame(
+            ['opcache', 'pdo-mysql'],
+            SapiExtensionRequirements::fromEmbeddedVendorFiles([$embedded]),
+        );
+    }
+
+    public function testComposerOutsideEmbeddedVendorIsIgnored(): void
+    {
+        file_put_contents($this->directory . '/composer.json', json_encode([
+            'require' => ['ext-curl' => '*'],
+        ], JSON_THROW_ON_ERROR));
+        $application = $this->directory . '/index.php';
+        file_put_contents($application, '<?php');
+
+        self::assertSame([], SapiExtensionRequirements::fromEmbeddedVendorFiles([$application]));
+    }
+
+    public function testPhpSourceConfigureSwitchesFollowExtensionConfig(): void
+    {
+        mkdir($this->directory . '/ext/curl', 0777, true);
+        mkdir($this->directory . '/ext/mbstring', 0777, true);
+        file_put_contents($this->directory . '/ext/curl/config.m4', 'PHP_ARG_WITH([curl], [curl])');
+        file_put_contents($this->directory . '/ext/mbstring/config.m4', 'PHP_ARG_ENABLE([mbstring], [mb])');
+
+        self::assertSame(
+            ['--with-curl', '--enable-mbstring'],
+            SapiExtensionConfiguration::configureOptions(
+                $this->directory,
+                ['curl', 'Core', 'mbstring'],
+            ),
+        );
+    }
+
+    public function testPhpSourceStubsProvideFunctionAndClassOwnership(): void
+    {
+        mkdir($this->directory . '/ext/example', 0777, true);
+        file_put_contents($this->directory . '/ext/example/example.stub.php', <<<'PHP'
+<?php
+namespace {
+    function example_open(): void {}
+}
+namespace Example {
+    class Client {}
+}
+PHP);
+
+        $index = PhpSourceExtensionIndex::forSource($this->directory);
+        self::assertSame('example', $index->functionExtension('example_open'));
+        self::assertSame('example', $index->classExtension('Example\Client'));
+    }
+}
diff --git a/phpunit/src/CompilerBaseApiTest.php b/phpunit/src/CompilerBaseApiTest.php
index c5ca23a7..8431fc30 100644
--- a/phpunit/src/CompilerBaseApiTest.php
+++ b/phpunit/src/CompilerBaseApiTest.php
@@ -1,16 +1,26 @@
 <?php
+/**
+ * This file is part of TypePHP(AOT).
+ *
+ * @link     https://www.swoole.com/aot/
+ * @contact  service@swoole.com
+ */
 
 namespace TypePhp\Tests;
 
 use PHPUnit\Framework\TestCase;
-use TypePhp\CompilerTest;
 use TypePhp\CompilerBase;
-use TypePhp\Metadata\Constants;
-use TypePhp\Type;
+use TypePhp\CompilerTest;
 use TypePhp\Exception\TestError;
+use TypePhp\Metadata\Constants;
 use TypePhp\Platform\Macos;
 use TypePhp\Platform\Windows;
+use TypePhp\Type;
 
+/**
+ * @internal
+ * @coversNothing
+ */
 class CompilerBaseApiTest extends TestCase
 {
     private string $testDir;
@@ -60,7 +70,11 @@ class CompilerBaseApiTest extends TestCase
 
     private function getPropertyValue(string $name): mixed
     {
-        $prop = $this->ref->getProperty($name);
+        $class = $this->ref;
+        while (!$class->hasProperty($name) && ($parent = $class->getParentClass()) !== false) {
+            $class = $parent;
+        }
+        $prop = $class->getProperty($name);
         $prop->setAccessible(true);
         return $prop->getValue($this->compiler);
     }
@@ -153,7 +167,7 @@ PHP);
         foreach (['classMap', 'persistentClassMap', 'funcMap', 'persistentFuncMap', 'persistentPropMap'] as $map) {
             $this->assertSame([], $this->getPropertyValue($map), $map);
         }
-        $defaults = $this->compiler->getClassDef('CachePhase\\Defaults');
+        $defaults = $this->compiler->getClassDef('CachePhase\Defaults');
         $this->assertNotNull($defaults);
         $this->assertInstanceOf(
             \PhpParser\Node\Expr\ClassConstFetch::class,
@@ -169,7 +183,7 @@ PHP);
 
         $this->assertSame([], $this->getPropertyValue('classMap'));
         $this->assertArrayHasKey(
-            'CachePhase\\LateClass',
+            'CachePhase\LateClass',
             $this->getPropertyValue('persistentClassMap'),
         );
         $this->assertNotSame('', $defaults->getConstant('VALUE')->value);
@@ -431,7 +445,7 @@ PHP);
 
     public function testUnqualifiedRuntimeConstantUsesNamespaceFallback(): void
     {
-        $this->setPropertyValue('namespace', 'App\\Worker');
+        $this->setPropertyValue('namespace', 'App\Worker');
         $this->setPropertyValue('noLiteralStrings', true);
 
         $code = $this->invokeMethod(
@@ -440,23 +454,23 @@ PHP);
         );
 
         $this->assertStringNotContainsString('php::fn::defined(', $code);
-        $this->assertStringContainsString('App\\\\Worker\\\\COMPOSER_PATH', $code);
+        $this->assertStringContainsString('App\\\Worker\\\COMPOSER_PATH', $code);
         $this->assertStringEndsWith(', php::ConstantLookup::UnqualifiedInNamespace)', $code);
         $this->assertStringNotContainsString('php::constant(nullptr,', $code);
     }
 
     public function testQualifiedRuntimeConstantDoesNotUseGlobalFallback(): void
     {
-        $this->setPropertyValue('namespace', 'App\\Worker');
+        $this->setPropertyValue('namespace', 'App\Worker');
         $this->setPropertyValue('noLiteralStrings', true);
 
         $code = $this->invokeMethod(
             'parseConstFetch',
-            new \PhpParser\Node\Expr\ConstFetch(new \PhpParser\Node\Name('Config\\PATH'))
+            new \PhpParser\Node\Expr\ConstFetch(new \PhpParser\Node\Name('Config\PATH'))
         );
 
         $this->assertStringNotContainsString('php::fn::defined(', $code);
-        $this->assertStringContainsString('App\\\\Worker\\\\Config\\\\PATH', $code);
+        $this->assertStringContainsString('App\\\Worker\\\Config\\\PATH', $code);
     }
 
     public function testInlineStringArrayKeyUsesZendStringPointer(): void
@@ -685,7 +699,7 @@ YAML);
             "zend_module_entry typephp_app_module_entry = {\n"
             . "    STANDARD_MODULE_HEADER_EX,\n"
             . "    nullptr,\n"
-            . "    typephp_app_module_deps,",
+            . '    typephp_app_module_deps,',
             $extension,
         );
     }
@@ -719,8 +733,8 @@ YAML);
             'php_info_print_table_header(2, "typephp_metadata_demo support", "enabled");',
             $extension,
         );
-        $this->assertStringContainsString('php_info_print_table_row(2, "Maintainer", "TypePHP \\"Core\\" Team");', $extension);
-        $this->assertStringContainsString('php_info_print_table_row(2, "Description", "Native PHP\\\\C++ extension");', $extension);
+        $this->assertStringContainsString('php_info_print_table_row(2, "Maintainer", "TypePHP \"Core\" Team");', $extension);
+        $this->assertStringContainsString('php_info_print_table_row(2, "Description", "Native PHP\\\C++ extension");', $extension);
         $this->assertStringContainsString('php_info_print_table_row(2, "Stable", "true");', $extension);
         $this->assertStringContainsString(
             "    PHP_MINFO(typephp_metadata_demo),\n"
@@ -883,6 +897,96 @@ YAML, 'myproject.yml', 'examples/tetris-sdl');
         $this->assertSame('demo.so', $this->invokeMethod('getTargetFileName'));
     }
 
+    public function testSingleSapiTargetUsesConfiguredOutputName(): void
+    {
+        $this->compiler->setOutputPath($this->testDir . '/build/app');
+        $this->invokeMethod('configureSapiTargets', 'fpm');
+
+        $this->assertSame(
+            ['fpm' => $this->testDir . '/build/app'],
+            $this->compiler->getSapiOutputFiles(),
+        );
+    }
+
+    public function testBothSapiTargetsHaveExplicitTargetSuffixes(): void
+    {
+        $this->compiler->setOutputPath($this->testDir . '/build/app');
+        $this->invokeMethod('configureSapiTargets', 'both');
+
+        $this->assertSame(
+            [
+                'cli' => $this->testDir . '/build/app-cli',
+                'fpm' => $this->testDir . '/build/app-fpm',
+            ],
+            $this->compiler->getSapiOutputFiles(),
+        );
+    }
+
+    public function testSapiBuildModeDefaultsToCliTarget(): void
+    {
+        $this->compiler->setBuildMode(CompilerBase::BUILD_MODE_SAPI);
+
+        $this->assertSame(['cli'], $this->compiler->getSapiTargets());
+        $this->assertTrue($this->compiler->isSapiBuild());
+    }
+
+    public function testSapiCliEntryIsEmbeddedAndExcludedFromAotSources(): void
+    {
+        $projectFile = $this->createProjectFile(<<<'YAML'
+sapi: cli
+entry: main.php
+sources:
+  - main.php
+YAML);
+
+        $files = $this->invokeMethod('parseProjectYaml', $projectFile);
+        $entry = realpath(dirname($projectFile) . '/main.php');
+
+        $this->assertSame([], $files);
+        $this->assertSame($entry, $this->getPropertyValue('sapiEntryFile'));
+        $this->assertSame([$entry], $this->getPropertyValue('embeddedFiles'));
+        $this->assertSame([$entry], $this->getPropertyValue('embeddedPhpFiles'));
+        $this->invokeMethod('validateLoadedProjectConfiguration');
+    }
+
+    public function testSapiCliRequiresEntry(): void
+    {
+        $projectFile = $this->createProjectFile(<<<'YAML'
+sapi: cli
+sources:
+  - main.php
+YAML);
+        $this->invokeMethod('parseProjectYaml', $projectFile);
+
+        $this->expectException(TestError::class);
+        $this->expectExceptionMessage('CLI SAPI builds require an `entry` PHP file');
+        $this->invokeMethod('validateLoadedProjectConfiguration');
+    }
+
+    public function testSapiFpmDoesNotRequireCliEntry(): void
+    {
+        $projectFile = $this->createProjectFile(<<<'YAML'
+sapi: fpm
+sources:
+  - main.php
+YAML);
+        $this->invokeMethod('parseProjectYaml', $projectFile);
+
+        $this->invokeMethod('validateLoadedProjectConfiguration');
+        $this->assertSame(['fpm'], $this->compiler->getSapiTargets());
+    }
+
+    public function testProjectWithoutAotSourcesUsesRuntimeDeclarationHeader(): void
+    {
+        $this->compiler->setTargetName('opcode_only');
+
+        $headers = $this->invokeMethod('genExtensionIncludeHeaderFiles');
+
+        $this->assertStringContainsString('php_opcode_only_runtime_decl.h', $headers);
+        $this->assertStringNotContainsString('php_opcode_only_func_decl.h', $headers);
+        $this->assertStringNotContainsString('php_opcode_only_data_decl.h', $headers);
+    }
+
     public function testGeneratedZendModuleAndProjectNamespaceUseDistinctPrefixes(): void
     {
         $this->compiler->setTargetName('demo');
@@ -1252,7 +1356,7 @@ sources:
     if: PHP_OS_FAMILY >= "Linux"
 YAML);
 
-        $this->expectException(\TypePhp\Exception\TestError::class);
+        $this->expectException(TestError::class);
         $this->expectExceptionMessage('Unsupported source condition');
 
         $this->invokeMethod('parseProjectYaml', $projectFile);
@@ -1266,7 +1370,7 @@ sources:
     if: PHP_VERSION
 YAML);
 
-        $this->expectException(\TypePhp\Exception\TestError::class);
+        $this->expectException(TestError::class);
         $this->expectExceptionMessage('Unsupported source condition');
 
         $this->invokeMethod('parseProjectYaml', $projectFile);
@@ -1280,7 +1384,7 @@ sources:
     if: PHP_VERSION_ID >= getenv("MIN_PHP")
 YAML);
 
-        $this->expectException(\TypePhp\Exception\TestError::class);
+        $this->expectException(TestError::class);
         $this->expectExceptionMessage('Unsupported source condition');
 
         $this->invokeMethod('parseProjectYaml', $projectFile);
@@ -1724,7 +1828,7 @@ YAML);
             'TYPEPHP_COLD_ATTRIBUTE php::Str php_libraryapi__counter__label(',
             $phpCpp,
         );
-        $provider = $this->invokeMethod('getClass', 'LibraryApi\\InternalStringExtension');
+        $provider = $this->invokeMethod('getClass', 'LibraryApi\InternalStringExtension');
         $this->assertSame(Type::STR, $provider->methodsForTarget);
 
         $stubFile = $this->compiler->genLibraryImportStub($files);
@@ -1736,15 +1840,15 @@ YAML);
         $this->assertStringContainsString('public const int STEP = 2;', $stub);
         $this->assertStringContainsString('public int $value = 1;', $stub);
         $this->assertStringContainsString('#[\Constructor, \Getter, \Setter, \With]', $stub);
-        $this->assertStringContainsString("#[\Printer(fields: ['value', 'doubled'])]", $stub);
-        $this->assertStringContainsString("#[\Arrayable(['value'])]", $stub);
+        $this->assertStringContainsString("#[\\Printer(fields: ['value', 'doubled'])]", $stub);
+        $this->assertStringContainsString("#[\\Arrayable(['value'])]", $stub);
         $this->assertStringContainsString('#[\NotNull, \Validate(FILTER_VALIDATE_EMAIL)]', $stub);
         $this->assertStringContainsString('#[\MustUse, \Cold]', $stub);
         $this->assertStringContainsString('#[\MustUse, \Hot]', $stub);
         $this->assertStringContainsString('#[\Override]', $stub);
         $this->assertStringContainsString('#[\Immutable]', $stub);
         $this->assertMatchesRegularExpression(
-            '/function inspect\(\s*#\[\\\\Immutable\]\s*\\\\LibraryApi\\\\Counter \$counter\s*\): int/s',
+            '/function inspect\(\s*#\[\\\Immutable\]\s*\\\LibraryApi\\\Counter \$counter\s*\): int/s',
             $stub,
         );
         $this->assertMatchesRegularExpression(
@@ -1753,7 +1857,7 @@ YAML);
         );
         $this->assertStringContainsString('function add(int $amount = self::STEP): int', $stub);
         $this->assertMatchesRegularExpression(
-            '/function label\(\s*#\[\\\\NotNull, \\\\Validate\(FILTER_VALIDATE_EMAIL\)\]\s*string \$value\s*\): string/s',
+            '/function label\(\s*#\[\\\NotNull, \\\Validate\(FILTER_VALIDATE_EMAIL\)\]\s*string \$value\s*\): string/s',
             $stub,
         );
         $this->assertStringContainsString('function twice(int $value): int', $stub);
@@ -2092,8 +2196,8 @@ YAML);
     public function testGetNamespacedClassNameFullyQualified(): void
     {
         $this->assertEquals(
-            'App\\Entity\\User',
-            $this->compiler->getNamespacedClassName('\\App\\Entity\\User')
+            'App\Entity\User',
+            $this->compiler->getNamespacedClassName('\App\Entity\User')
         );
     }
 
@@ -2103,19 +2207,19 @@ YAML);
 
     public function testGetNamespacedClassNameWithUseAlias(): void
     {
-        $this->setPropertyValue('useAliases', ['user' => 'App\\Entity\\User']);
+        $this->setPropertyValue('useAliases', ['user' => 'App\Entity\User']);
         $this->assertEquals(
-            'App\\Entity\\User',
+            'App\Entity\User',
             $this->compiler->getNamespacedClassName('User')
         );
     }
 
     public function testGetNamespacedClassNameWithUseAliasSubNamespace(): void
     {
-        $this->setPropertyValue('useAliases', ['entity' => 'App\\Entity']);
+        $this->setPropertyValue('useAliases', ['entity' => 'App\Entity']);
         $this->assertEquals(
-            'App\\Entity\\User',
-            $this->compiler->getNamespacedClassName('Entity\\User')
+            'App\Entity\User',
+            $this->compiler->getNamespacedClassName('Entity\User')
         );
     }
 
@@ -2123,25 +2227,25 @@ YAML);
     {
         $use = new \PhpParser\Node\Stmt\Use_([
             new \PhpParser\Node\UseItem(
-                new \PhpParser\Node\Name('Vendor\\Package\\Notes'),
+                new \PhpParser\Node\Name('Vendor\Package\Notes'),
                 new \PhpParser\Node\Identifier('NotesFactory'),
             ),
         ]);
 
         $this->invokeMethod('parseUse', $use);
-        $this->setPropertyValue('namespace', 'Application\\Api');
+        $this->setPropertyValue('namespace', 'Application\Api');
 
         $this->assertSame([], $this->getPropertyValue('useNamespaces'));
         $this->assertSame(
-            ['notesfactory' => 'Vendor\\Package\\Notes'],
+            ['notesfactory' => 'Vendor\Package\Notes'],
             $this->getPropertyValue('useAliases'),
         );
         $this->assertSame(
-            'Vendor\\Package\\Notes',
+            'Vendor\Package\Notes',
             $this->compiler->getNamespacedClassName('NOTESFACTORY'),
         );
         $this->assertSame(
-            'Application\\Api\\Notes',
+            'Application\Api\Notes',
             $this->compiler->getNamespacedClassName('Notes'),
         );
     }
@@ -2152,21 +2256,21 @@ YAML);
 
     public function testGetNamespacedClassNameWithUseNamespace(): void
     {
-        $this->setPropertyValue('useNamespaces', ['App\\Entity']);
+        $this->setPropertyValue('useNamespaces', ['App\Entity']);
         // The last segment of 'App\Entity' is 'Entity', matching input 'Entity'
         $this->assertEquals(
-            'App\\Entity',
+            'App\Entity',
             $this->compiler->getNamespacedClassName('Entity')
         );
     }
 
     public function testGetNamespacedClassNameWithUseNamespaceSub(): void
     {
-        $this->setPropertyValue('useNamespaces', ['App\\Entity']);
+        $this->setPropertyValue('useNamespaces', ['App\Entity']);
         // 'Entity\User' - first part 'Entity' matches the last part of 'App\Entity'
         $this->assertEquals(
-            'App\\Entity\\User',
-            $this->compiler->getNamespacedClassName('Entity\\User')
+            'App\Entity\User',
+            $this->compiler->getNamespacedClassName('Entity\User')
         );
     }
 
@@ -2176,12 +2280,12 @@ YAML);
 
     public function testGetNamespacedClassNameWithCurrentNamespace(): void
     {
-        $this->setPropertyValue('namespace', 'App\\Service');
+        $this->setPropertyValue('namespace', 'App\Service');
         // No matching alias or use namespace
         $this->setPropertyValue('useAliases', []);
         $this->setPropertyValue('useNamespaces', []);
         $this->assertEquals(
-            'App\\Service\\MyClass',
+            'App\Service\MyClass',
             $this->compiler->getNamespacedClassName('MyClass')
         );
     }
@@ -2203,11 +2307,11 @@ YAML);
 
     public function testGetNamespacedClassNameAliasPriority(): void
     {
-        $this->setPropertyValue('useAliases', ['user' => 'App\\Models\\User']);
-        $this->setPropertyValue('useNamespaces', ['App\\Controllers']);
+        $this->setPropertyValue('useAliases', ['user' => 'App\Models\User']);
+        $this->setPropertyValue('useNamespaces', ['App\Controllers']);
         // Alias should be checked first
         $this->assertEquals(
-            'App\\Models\\User',
+            'App\Models\User',
             $this->compiler->getNamespacedClassName('User')
         );
     }
@@ -2219,18 +2323,18 @@ YAML);
     public function testGetNamespacedFuncNameFullyQualified(): void
     {
         $this->assertEquals(
-            'App\\Lib\\helper_func',
-            $this->compiler->getNamespacedFuncName('\\App\\Lib\\helper_func')
+            'App\Lib\helper_func',
+            $this->compiler->getNamespacedFuncName('\App\Lib\helper_func')
         );
     }
 
     public function testGetNamespacedFuncNameWithUseFunction(): void
     {
         $this->setPropertyValue('useFunctions', [
-            'helper_func' => 'App\\Lib\\helper_func',
+            'helper_func' => 'App\Lib\helper_func',
         ]);
         $this->assertEquals(
-            'App\\Lib\\helper_func',
+            'App\Lib\helper_func',
             $this->compiler->getNamespacedFuncName('helper_func')
         );
     }
@@ -2250,7 +2354,7 @@ YAML);
 
     public function testGetNamespacedFuncNameNotInUseFunctions(): void
     {
-        $this->setPropertyValue('useFunctions', ['other' => 'Some\\Ns\\other']);
+        $this->setPropertyValue('useFunctions', ['other' => 'Some\Ns\other']);
         $this->assertEquals(
             'my_func',
             $this->compiler->getNamespacedFuncName('my_func')
diff --git a/phpunit/src/Installer/PhpBuildConfigurationTest.php b/phpunit/src/Installer/PhpBuildConfigurationTest.php
index 3c0e3be6..59e66bbc 100644
--- a/phpunit/src/Installer/PhpBuildConfigurationTest.php
+++ b/phpunit/src/Installer/PhpBuildConfigurationTest.php
@@ -138,6 +138,32 @@ final class PhpBuildConfigurationTest extends TestCase
         self::assertContains('--enable-mbstring', $options);
     }
 
+    public function testSapiDerivationBuildsStaticCliAndSelectedFpm(): void
+    {
+        $options = PhpBuildConfiguration::deriveSapi(
+            [
+                '--prefix=/usr',
+                '--enable-embed=shared',
+                '--enable-opcache=shared',
+                '--with-curl=shared',
+                '--enable-mbstring',
+                '--with-pear',
+            ],
+            '/tmp/typephp-sapi',
+            ['cli', 'fpm'],
+        );
+
+        self::assertContains('--prefix=/tmp/typephp-sapi', $options);
+        self::assertContains('--enable-cli', $options);
+        self::assertContains('--enable-fpm', $options);
+        self::assertContains('--enable-opcache', $options);
+        self::assertContains('--with-curl', $options);
+        self::assertContains('--without-pear', $options);
+        self::assertNotContains('--enable-embed=shared', $options);
+        self::assertNotContains('--enable-opcache=shared', $options);
+        self::assertNotContains('--with-curl=shared', $options);
+    }
+
     public function testParseShellWordsRejectsIncompleteInput(): void
     {
         $this->expectException(\InvalidArgumentException::class);
diff --git a/src/Build/EmbeddedTableRenderer.php b/src/Build/EmbeddedTableRenderer.php
index 8b497697..b2c6c98f 100644
--- a/src/Build/EmbeddedTableRenderer.php
+++ b/src/Build/EmbeddedTableRenderer.php
@@ -10,7 +10,13 @@ namespace TypePhp\Build;
 
 final class EmbeddedTableRenderer
 {
-    public function render(EmbeddedArchive $archive, string $phpVersion, bool $windows): string
+    public function render(
+        EmbeddedArchive $archive,
+        string $phpVersion,
+        bool $windows,
+        bool $emitEmptyRuntimeHooks = true,
+        ?string $entryFile = null,
+    ): string
     {
         $code = '#include <typephp_opcode_table.h>' . PHP_EOL;
         if (!$archive->isEmpty()) {
@@ -32,7 +38,11 @@ final class EmbeddedTableRenderer
         );
         $version = json_encode($phpVersion, JSON_THROW_ON_ERROR);
         $code .= 'extern "C" const char *typephp_project_php_version(void) { return ' . $version . '; }' . PHP_EOL;
-        if ($archive->isEmpty()) {
+        $entry = $entryFile === null
+            ? 'nullptr'
+            : json_encode($entryFile, JSON_UNESCAPED_SLASHES | JSON_UNESCAPED_UNICODE | JSON_THROW_ON_ERROR);
+        $code .= 'extern "C" const char *typephp_project_entry_file(void) { return ' . $entry . '; }' . PHP_EOL;
+        if ($archive->isEmpty() && $emitEmptyRuntimeHooks) {
             $code .= 'extern "C" void typephp_opcode_table_install(void) {}' . PHP_EOL;
             $code .= 'extern "C" void typephp_opcode_table_uninstall(void) {}' . PHP_EOL;
         }
diff --git a/src/Build/NativeBuildConfigurationTrait.php b/src/Build/NativeBuildConfigurationTrait.php
index 9866a083..185a37a8 100644
--- a/src/Build/NativeBuildConfigurationTrait.php
+++ b/src/Build/NativeBuildConfigurationTrait.php
@@ -177,8 +177,20 @@ trait NativeBuildConfigurationTrait
             $includePaths = array_merge($includePaths, $phpSdkPaths);
         } else {
             // Linux/macOS
-            $phpPaths = $platform->buildPhpIncludePaths($this->getPhpDir());
+            $phpPaths = $platform->buildPhpIncludePaths($this->getPhpDir(), $this->isSapiBuild());
             $includePaths = array_merge($includePaths, $phpPaths);
+            if ($this->isSapiBuild() && $this->sapiPhpBuildDirectory !== null) {
+                $makefile = $this->sapiPhpBuildDirectory . '/Makefile';
+                $contents = is_file($makefile) ? (string) file_get_contents($makefile) : '';
+                if (preg_match('/^INCLUDES[ \t]*=[ \t]*(.*)$/m', $contents, $match) === 1) {
+                    preg_match_all('/(?:^|\s)-I([^\s]+)/', $match[1], $paths);
+                    foreach ($paths[1] ?? [] as $path) {
+                        if (is_dir($path)) {
+                            $includePaths[] = $path;
+                        }
+                    }
+                }
+            }
             // Bundled mpdecimal header directories
             $includePaths[] = $this->getPhpxDir() . '/thirdparty/mpdecimal/libmpdec';
             $includePaths[] = $this->getPhpxDir() . '/thirdparty/mpdecimal/libmpdec++';
diff --git a/src/Build/OfficialPhpSource.php b/src/Build/OfficialPhpSource.php
new file mode 100644
index 00000000..ec42014c
--- /dev/null
+++ b/src/Build/OfficialPhpSource.php
@@ -0,0 +1,238 @@
+<?php
+
+namespace TypePhp\Build;
+
+final class OfficialPhpSource
+{
+    private const string RELEASE_API = 'https://www.php.net/releases/index.php?json=1&version=%s&max=100';
+    private readonly \Closure $output;
+
+    /** @param callable(string):void $output */
+    public function __construct(
+        private readonly string $cacheDirectory,
+        callable $output,
+    ) {
+        $this->output = \Closure::fromCallable($output);
+    }
+
+    public static function defaultCacheDirectory(?string $home = null): string
+    {
+        $home ??= getenv('HOME') ?: '';
+        if ($home === '') {
+            throw new \RuntimeException('Cannot determine the PHP source cache because HOME is not set');
+        }
+        return rtrim($home, '/\\') . '/.typephp';
+    }
+
+    public function prepare(string $requestedVersion): string
+    {
+        $cached = $this->findCachedSource($requestedVersion);
+        if ($cached !== null) {
+            return $cached;
+        }
+        $release = $this->resolveRelease($requestedVersion);
+        $this->mkdir($this->cacheDirectory);
+        $lock = fopen($this->cacheDirectory . '/download.lock', 'c+');
+        if ($lock === false || !flock($lock, LOCK_EX)) {
+            throw new \RuntimeException('Unable to lock the PHP source cache: ' . $this->cacheDirectory);
+        }
+        try {
+            return $this->prepareLocked($release);
+        } finally {
+            flock($lock, LOCK_UN);
+            fclose($lock);
+        }
+    }
+
+    private function findCachedSource(string $requestedVersion): ?string
+    {
+        if (preg_match('/^(8\.(?:4|5))(?:\.0)?$/', $requestedVersion, $match) === 1) {
+            $pattern = $this->cacheDirectory . '/src/php-' . $match[1] . '.*';
+        } elseif (preg_match('/^8\.(?:4|5)\.\d+$/', $requestedVersion) === 1) {
+            $pattern = $this->cacheDirectory . '/src/php-' . $requestedVersion;
+        } else {
+            return null;
+        }
+        $candidates = [];
+        foreach (glob($pattern, GLOB_ONLYDIR) ?: [] as $source) {
+            if ($this->isComplete($source)) {
+                $candidates[] = $source;
+            }
+        }
+        usort($candidates, static fn(string $left, string $right): int => version_compare(
+            substr(basename($right), 4),
+            substr(basename($left), 4),
+        ));
+        return $candidates[0] ?? null;
+    }
+
+    /** @return array{version:string,filename:string,sha256:string,url:string} */
+    private function resolveRelease(string $requestedVersion): array
+    {
+        if (preg_match('/^(8\.(?:4|5))(?:\.0)?$/', $requestedVersion, $match) === 1) {
+            $branch = $match[1];
+            $exactVersion = null;
+        } elseif (preg_match('/^(8\.(?:4|5))\.\d+$/', $requestedVersion, $match) === 1) {
+            $branch = $match[1];
+            $exactVersion = $requestedVersion;
+        } else {
+            throw new \InvalidArgumentException(
+                "Unsupported PHP source version `{$requestedVersion}`. Expected 8.4, 8.5, or a stable patch release.",
+            );
+        }
+
+        $data = json_decode(
+            $this->downloadText(sprintf(self::RELEASE_API, rawurlencode($branch))),
+            true,
+            flags: JSON_THROW_ON_ERROR,
+        );
+        if (!is_array($data)) {
+            throw new \RuntimeException('Invalid release list returned by PHP.net');
+        }
+        if ($exactVersion === null) {
+            $versions = array_keys($data);
+            usort($versions, static fn(string $left, string $right): int => version_compare($right, $left));
+            $exactVersion = current(array_values(array_filter(
+                $versions,
+                static fn(string $version): bool => preg_match('/^' . preg_quote($branch, '/') . '\.\d+$/', $version) === 1,
+            ))) ?: null;
+        }
+        if ($exactVersion === null || !isset($data[$exactVersion]) || !is_array($data[$exactVersion])) {
+            throw new \RuntimeException("PHP {$requestedVersion} was not found in the official release list");
+        }
+        foreach ($data[$exactVersion]['source'] ?? [] as $source) {
+            $filename = (string) ($source['filename'] ?? '');
+            $sha256 = (string) ($source['sha256'] ?? '');
+            if (str_ends_with($filename, '.tar.xz') && $sha256 !== '') {
+                return [
+                    'version' => $exactVersion,
+                    'filename' => $filename,
+                    'sha256' => $sha256,
+                    'url' => 'https://www.php.net/distributions/' . rawurlencode($filename),
+                ];
+            }
+        }
+        throw new \RuntimeException("PHP {$exactVersion} has no verified tar.xz source archive");
+    }
+
+    /** @param array{version:string,filename:string,sha256:string,url:string} $release */
+    private function prepareLocked(array $release): string
+    {
+        $sourceDirectory = $this->cacheDirectory . '/src';
+        $this->mkdir($sourceDirectory);
+        $source = $sourceDirectory . '/php-' . $release['version'];
+        if ($this->isComplete($source)) {
+            return $source;
+        }
+        $archiveDirectory = $this->cacheDirectory . '/archives';
+        $this->mkdir($archiveDirectory);
+        $archive = $archiveDirectory . '/' . $release['filename'];
+        if (!is_file($archive) || hash_file('sha256', $archive) !== $release['sha256']) {
+            ($this->output)('Downloading PHP ' . $release['version'] . ' source from php.net');
+            $temporary = $archive . '.part-' . bin2hex(random_bytes(6));
+            try {
+                $this->downloadFile($release['url'], $temporary);
+                if (hash_file('sha256', $temporary) !== $release['sha256']) {
+                    throw new \RuntimeException('PHP source archive SHA-256 verification failed');
+                }
+                if (!rename($temporary, $archive)) {
+                    throw new \RuntimeException("Unable to cache PHP source archive: {$archive}");
+                }
+            } finally {
+                if (is_file($temporary)) {
+                    @unlink($temporary);
+                }
+            }
+        }
+        if (is_dir($source) && !$this->isComplete($source)) {
+            throw new \RuntimeException("Incomplete PHP source cache must be removed: {$source}");
+        }
+        ($this->output)('Extracting PHP ' . $release['version'] . ' source into ' . $sourceDirectory);
+        $this->run(['tar', '-xJf', $archive, '-C', $sourceDirectory]);
+        if (!$this->isComplete($source)) {
+            throw new \RuntimeException("PHP source archive did not produce a complete source tree: {$source}");
+        }
+        return $source;
+    }
+
+    private function isComplete(string $source): bool
+    {
+        foreach (['configure', 'main/php.h', 'main/php_version.h', 'Zend/zend.h', 'ext/standard/fsock.h'] as $file) {
+            if (!is_file($source . '/' . $file)) {
+                return false;
+            }
+        }
+        return true;
+    }
+
+    public static function version(string $source): string
+    {
+        $header = rtrim($source, '/\\') . '/main/php_version.h';
+        $contents = is_file($header) ? file_get_contents($header) : false;
+        if (!is_string($contents)
+            || preg_match('/^#define\s+PHP_VERSION\s+"([^"]+)"/m', $contents, $match) !== 1) {
+            throw new \RuntimeException("Cannot determine PHP source version from {$header}");
+        }
+        return $match[1];
+    }
+
+    private function downloadText(string $url): string
+    {
+        $context = stream_context_create(['http' => ['timeout' => 30, 'user_agent' => 'TypePHP/tpc']]);
+        $contents = @file_get_contents($url, false, $context);
+        if (is_string($contents)) {
+            return $contents;
+        }
+        $curl = trim((string) shell_exec('command -v curl 2>/dev/null'));
+        if ($curl === '') {
+            throw new \RuntimeException("Unable to download {$url}; enable allow_url_fopen or install curl");
+        }
+        return $this->capture([$curl, '--fail', '--location', '--retry', '3', $url]);
+    }
+
+    private function downloadFile(string $url, string $target): void
+    {
+        $curl = trim((string) shell_exec('command -v curl 2>/dev/null'));
+        if ($curl !== '') {
+            $this->run([$curl, '--fail', '--location', '--retry', '3', '--output', $target, $url]);
+            return;
+        }
+        $contents = $this->downloadText($url);
+        if (file_put_contents($target, $contents) === false) {
+            throw new \RuntimeException("Unable to write {$target}");
+        }
+    }
+
+    /** @param list<string> $command */
+    private function run(array $command): void
+    {
+        $process = proc_open($command, [STDIN, STDOUT, STDERR], $pipes);
+        if (!is_resource($process) || proc_close($process) !== 0) {
+            throw new \RuntimeException('Command failed: ' . implode(' ', $command));
+        }
+    }
+
+    /** @param list<string> $command */
+    private function capture(array $command): string
+    {
+        $process = proc_open($command, [1 => ['pipe', 'w'], 2 => ['pipe', 'w']], $pipes);
+        if (!is_resource($process)) {
+            throw new \RuntimeException('Unable to run command: ' . implode(' ', $command));
+        }
+        $stdout = stream_get_contents($pipes[1]);
+        $stderr = stream_get_contents($pipes[2]);
+        fclose($pipes[1]);
+        fclose($pipes[2]);
+        if (proc_close($process) !== 0) {
+            throw new \RuntimeException(trim($stderr));
+        }
+        return $stdout;
+    }
+
+    private function mkdir(string $directory): void
+    {
+        if (!is_dir($directory) && !mkdir($directory, 0777, true) && !is_dir($directory)) {
+            throw new \RuntimeException("Cannot create PHP source cache directory: {$directory}");
+        }
+    }
+}
diff --git a/src/Build/PhpSourceExtensionIndex.php b/src/Build/PhpSourceExtensionIndex.php
new file mode 100644
index 00000000..b92e69c7
--- /dev/null
+++ b/src/Build/PhpSourceExtensionIndex.php
@@ -0,0 +1,92 @@
+<?php
+/**
+ * This file is part of TypePHP(AOT).
+ *
+ * @link     https://www.swoole.com/aot/
+ * @contact  service@swoole.com
+ */
+
+namespace TypePhp\Build;
+
+use PhpParser\Node;
+use PhpParser\Node\Stmt;
+use PhpParser\ParserFactory;
+
+final class PhpSourceExtensionIndex
+{
+    /** @var array<string, self> */
+    private static array $instances = [];
+
+    /** @var array<string, string> */
+    private array $functions = [];
+
+    /** @var array<string, string> */
+    private array $classes = [];
+
+    public static function forSource(string $sourceDirectory): self
+    {
+        return self::$instances[$sourceDirectory] ??= new self($sourceDirectory);
+    }
+
+    public function functionExtension(string $function): ?string
+    {
+        return $this->functions[strtolower(ltrim($function, '\\'))] ?? null;
+    }
+
+    public function classExtension(string $class): ?string
+    {
+        return $this->classes[strtolower(ltrim($class, '\\'))] ?? null;
+    }
+
+    private function __construct(string $sourceDirectory)
+    {
+        $parser = (new ParserFactory())->createForNewestSupportedVersion();
+        foreach (glob($sourceDirectory . '/ext/*') ?: [] as $extensionDirectory) {
+            if (!is_dir($extensionDirectory)) {
+                continue;
+            }
+            $extension = basename($extensionDirectory);
+            foreach (glob($extensionDirectory . '/*.stub.php') ?: [] as $stub) {
+                try {
+                    $statements = $parser->parse((string) file_get_contents($stub));
+                } catch (\Throwable) {
+                    continue;
+                }
+                if (is_array($statements)) {
+                    $this->indexStatements($statements, '', $extension);
+                }
+            }
+        }
+    }
+
+    /** @param list<Node\Stmt> $statements */
+    private function indexStatements(array $statements, string $namespace, string $extension): void
+    {
+        foreach ($statements as $statement) {
+            if ($statement instanceof Stmt\Namespace_) {
+                $this->indexStatements(
+                    $statement->stmts,
+                    $statement->name?->toString() ?? '',
+                    $extension,
+                );
+                continue;
+            }
+            if ($statement instanceof Stmt\Function_) {
+                $this->functions[$this->qualified($namespace, $statement->name->toString())] = $extension;
+                continue;
+            }
+            if ($statement instanceof Stmt\ClassLike && $statement->name !== null) {
+                $this->classes[$this->qualified($namespace, $statement->name->toString())] = $extension;
+                continue;
+            }
+            if (property_exists($statement, 'stmts') && is_array($statement->stmts)) {
+                $this->indexStatements($statement->stmts, $namespace, $extension);
+            }
+        }
+    }
+
+    private function qualified(string $namespace, string $name): string
+    {
+        return strtolower($namespace === '' ? $name : $namespace . '\\' . $name);
+    }
+}
diff --git a/src/Build/SapiApplicationLinker.php b/src/Build/SapiApplicationLinker.php
new file mode 100644
index 00000000..30cea5b5
--- /dev/null
+++ b/src/Build/SapiApplicationLinker.php
@@ -0,0 +1,358 @@
+<?php
+/**
+ * This file is part of TypePHP(AOT).
+ *
+ * @link     https://www.swoole.com/aot/
+ * @contact  service@swoole.com
+ */
+
+namespace TypePhp\Build;
+
+final class SapiApplicationLinker
+{
+    /** @param \Closure(string):void $output */
+    public function __construct(
+        private readonly string $phpSourceDirectory,
+        private readonly string $phpBuildDirectory,
+        private readonly string $phpxArchive,
+        /** @var array<string, string> */
+        private readonly array $sapiArchives,
+        private readonly string $buildDirectory,
+        private readonly array $targets,
+        private readonly ?string $entryFile,
+        private readonly \Closure $output,
+    ) {
+    }
+
+    /**
+     * @param list<string> $projectObjects
+     * @param array<string, string> $outputs
+     */
+    public function link(array $projectObjects, array $outputs): string
+    {
+        $makefile = $this->phpBuildDirectory . '/Makefile';
+        if (!is_file($makefile)) {
+            throw new \RuntimeException("Private PHP Makefile does not exist: {$makefile}");
+        }
+        $variables = $this->readMakeVariables($makefile, [
+            'PHP_CLI_OBJS', 'PHP_FPM_OBJS', 'EXTRA_LIBS', 'CXX',
+        ]);
+        $cxx = trim($variables['CXX'] ?? '') ?: 'c++';
+        $binaryObjects = implode(' ', [...$projectObjects, $this->phpxArchive]);
+        $extraLibraries = trim(($variables['EXTRA_LIBS'] ?? '') . ' -lgmp -lgmpxx -lmpfr');
+
+        $cliObjects = $variables['PHP_CLI_OBJS'] ?? '';
+        $fpmObjects = $variables['PHP_FPM_OBJS'] ?? '';
+        $adapterMakefile = $this->generateSapiAdapters($cliObjects, $fpmObjects);
+        $adapterDirectory = $this->adapterDirectory();
+        if (in_array('cli', $this->targets, true)) {
+            $cliObjects = $this->replaceObject(
+                $cliObjects,
+                'sapi/cli/php_cli.lo',
+                $adapterDirectory . '/php_cli.lo',
+            );
+            $cliObjects = $this->replaceObject(
+                $cliObjects,
+                'sapi/cli/php_cli_server.lo',
+                $adapterDirectory . '/php_cli_server.lo',
+            );
+        }
+        if (in_array('fpm', $this->targets, true)) {
+            $fpmObjects = $this->replaceObject(
+                $fpmObjects,
+                'sapi/fpm/fpm/fpm_main.lo',
+                $adapterDirectory . '/fpm_main.lo',
+            );
+        }
+        $this->run([
+            'make', '-f', $adapterMakefile, '-j1',
+            ...array_map(
+                fn (string $target): string => 'typephp-' . $target . '-adapter',
+                $this->targets,
+            ),
+        ], $this->phpBuildDirectory);
+
+        foreach ($this->targets as $target) {
+            $output = $outputs[$target] ?? throw new \RuntimeException("Missing {$target} output path");
+            $linkOutput = $this->absoluteOutputPath($output);
+            $runtimeArchive = $this->sapiArchives[$target]
+                ?? throw new \RuntimeException("Missing cached PHP {$target} runtime archive");
+            $this->mkdir(dirname($linkOutput));
+            $arguments = [
+                'make', '-j1',
+                'CC=' . $cxx,
+                'CXX=' . $cxx,
+                'PHP_BINARY_OBJS=' . $binaryObjects,
+                'PHP_GLOBAL_OBJS=',
+                'EXTRA_LIBS=' . $extraLibraries,
+            ];
+            if ($target === 'cli') {
+                $arguments[] = 'PHP_CLI_OBJS=' . $this->onlyEntryObjects(
+                    $cliObjects,
+                    ['php_cli.lo', 'php_cli_server.lo'],
+                )
+                    . ' ' . $runtimeArchive;
+                $arguments[] = 'SAPI_CLI_PATH=' . $linkOutput;
+                $arguments[] = 'cli';
+            } else {
+                $arguments[] = 'PHP_FPM_OBJS=' . $this->onlyEntryObjects($fpmObjects, ['fpm_main.lo'])
+                    . ' ' . $runtimeArchive;
+                $arguments[] = 'SAPI_FPM_PATH=' . $linkOutput;
+                $arguments[] = 'fpm';
+            }
+            ($this->output)('Linking self-contained PHP ' . strtoupper($target) . ': ' . $output);
+            $this->run($arguments, $this->phpBuildDirectory);
+            if (!is_executable($linkOutput)) {
+                throw new \RuntimeException("PHP {$target} output was not generated: {$output}");
+            }
+        }
+        return $outputs['cli'] ?? $outputs['fpm'];
+    }
+
+    private function absoluteOutputPath(string $output): string
+    {
+        if ($output === '') {
+            throw new \RuntimeException('SAPI output path cannot be empty');
+        }
+        if ($output[0] === '/' || preg_match('/^[A-Za-z]:[\\\\\/]/', $output) === 1) {
+            return $output;
+        }
+        $directory = getcwd();
+        if ($directory === false) {
+            throw new \RuntimeException('Cannot resolve the SAPI application output directory');
+        }
+        return $directory . DIRECTORY_SEPARATOR . $output;
+    }
+
+    private function generateSapiAdapters(string $cliObjects, string $fpmObjects): string
+    {
+        $directory = $this->adapterDirectory();
+        $this->mkdir($directory);
+        $targets = [];
+        $rules = [];
+        if (in_array('cli', $this->targets, true)) {
+            if ($this->entryFile === null) {
+                throw new \RuntimeException('The CLI SAPI target requires an entry file');
+            }
+            $source = $directory . '/php_cli.c';
+            $object = $directory . '/php_cli.lo';
+            $serverSource = $directory . '/php_cli_server.c';
+            $serverObject = $directory . '/php_cli_server.lo';
+            $code = $this->readSource('/sapi/cli/php_cli.c');
+            $needle = "static zend_result cli_seek_file_begin(zend_file_handle *file_handle, char *script_file)\n{\n";
+            $replacement = $needle
+                . "\tif (typephp_embedded_file_exists(script_file)) {\n"
+                . "\t\tzend_stream_init_filename(file_handle, script_file);\n"
+                . "\t\tfile_handle->primary_script = 1;\n"
+                . "\t\treturn SUCCESS;\n\t}\n";
+            $code = $this->patchOnce($code, $needle, $replacement, 'CLI script opener');
+            $code = $this->patchCliArguments($code);
+            $code = $this->insertDeclaration($code, true);
+            $this->writeIfChanged($source, $code);
+            $serverCode = $this->readSource('/sapi/cli/php_cli_server.c');
+            $statCall = 'php_sys_stat(buf, &sb)';
+            if (substr_count($serverCode, $statCall) !== 2) {
+                throw new \RuntimeException('Cannot apply embedded path checks to the selected PHP CLI Server source');
+            }
+            $serverCode = str_replace($statCall, 'typephp_cli_server_stat(buf, &sb)', $serverCode);
+            $serverCode = $this->insertDeclaration($serverCode, false, true);
+            $this->writeIfChanged($serverSource, $serverCode);
+            $targets[] = 'typephp-cli-adapter';
+            $rules[] = "typephp-cli-adapter: {$object} {$serverObject}\n";
+            $rules[] = "{$object}: {$source}\n"
+                . "\t\$(LIBTOOL) --tag=CC --mode=compile \$(CC) -Isapi/cli/ -I\$(top_srcdir)/sapi/cli/ "
+                . "\$(COMMON_FLAGS) \$(CFLAGS_CLEAN) \$(EXTRA_CFLAGS) -c {$source} -o {$object}\n";
+            $rules[] = "{$serverObject}: {$serverSource}\n"
+                . "\t\$(LIBTOOL) --tag=CC --mode=compile \$(CC) -Isapi/cli/ -I\$(top_srcdir)/sapi/cli/ "
+                . "\$(COMMON_FLAGS) \$(CFLAGS_CLEAN) \$(EXTRA_CFLAGS) -c {$serverSource} -o {$serverObject}\n";
+        }
+        if (in_array('fpm', $this->targets, true)) {
+            if (trim($fpmObjects) === '') {
+                throw new \RuntimeException('The private PHP build was not configured with FPM support');
+            }
+            $source = $directory . '/fpm_main.c';
+            $object = $directory . '/fpm_main.lo';
+            $code = $this->readSource('/sapi/fpm/fpm/fpm_main.c');
+            $needle = '(real_path = tsrm_realpath(script_path_translated, NULL)) == NULL';
+            $replacement = '(real_path = typephp_embedded_file_exists(script_path_translated) '
+                . '? estrdup(script_path_translated) : tsrm_realpath(script_path_translated, NULL)) == NULL';
+            $code = $this->patchOnce($code, $needle, $replacement, 'FPM path check');
+            $code = $this->insertDeclaration($code);
+            $this->writeIfChanged($source, $code);
+            $targets[] = 'typephp-fpm-adapter';
+            $rules[] = "typephp-fpm-adapter: {$object}\n";
+            $rules[] = "{$object}: {$source}\n"
+                . "\t\$(LIBTOOL) --tag=CC --mode=compile \$(CC) -Isapi/fpm/ -I\$(top_srcdir)/sapi/fpm/ "
+                . '$(COMMON_FLAGS) $(CFLAGS_CLEAN) $(EXTRA_CFLAGS) -I$(top_srcdir)/sapi/fpm '
+                . '-I$(top_srcdir)/sapi/fpm/fpm '
+                . "-DZEND_ENABLE_STATIC_TSRMLS_CACHE=1 -c {$source} -o {$object}\n";
+        }
+        $path = $directory . '/adapters.mk';
+        $body = 'include ' . $this->phpBuildDirectory . '/Makefile' . PHP_EOL
+            . '.PHONY: ' . implode(' ', $targets) . PHP_EOL
+            . implode(PHP_EOL, $rules);
+        AtomicFile::write($path, $body);
+        return $path;
+    }
+
+    private function adapterDirectory(): string
+    {
+        $runtime = hash('sha256', $this->phpSourceDirectory . "\0" . $this->phpBuildDirectory);
+        return $this->buildDirectory . '/cache/sapi/adapters/' . substr($runtime, 0, 16);
+    }
+
+    private function insertDeclaration(
+        string $code,
+        bool $cliArguments = false,
+        bool $cliServerStat = false,
+    ): string {
+        $needle = '#include "php.h"';
+        $declarations = 'extern int typephp_embedded_file_exists(const char *path);';
+        if ($cliArguments) {
+            $declarations .= PHP_EOL
+                . 'extern int typephp_cli_prepare_arguments(int *argc, char ***argv, '
+                . 'const void *options, char ***allocated_argv);' . PHP_EOL
+                . 'extern void typephp_cli_release_arguments(char **allocated_argv);';
+        }
+        if ($cliServerStat) {
+            $declarations .= PHP_EOL . <<<'C'
+extern int typephp_embedded_path_kind(const char *path);
+static int typephp_cli_server_stat(const char *path, zend_stat_t *statbuf)
+{
+	int kind = typephp_embedded_path_kind(path);
+	if (kind == 0) {
+		return php_sys_stat(path, statbuf);
+	}
+	memset(statbuf, 0, sizeof(*statbuf));
+	statbuf->st_mode = kind == 2 ? (S_IFDIR | 0555) : (S_IFREG | 0444);
+	statbuf->st_nlink = 1;
+	return 0;
+}
+C;
+        }
+        $code = preg_replace(
+            '/' . preg_quote($needle, '/') . '/',
+            $needle . PHP_EOL . $declarations,
+            $code,
+            1,
+            $replacements,
+        );
+        if (!is_string($code) || $replacements !== 1) {
+            throw new \RuntimeException('Cannot apply PHP header include patch to the selected PHP source');
+        }
+        return $code;
+    }
+
+    private function patchCliArguments(string $code): string
+    {
+        $setup = "\targv = save_ps_args(argc, argv);\n";
+        $code = $this->patchOnce(
+            $code,
+            $setup,
+            $setup
+                . "\tchar **typephp_saved_argv = argv;\n"
+                . "\tchar **typephp_application_argv = NULL;\n"
+                . "\tif (typephp_cli_prepare_arguments(&argc, &argv, OPTIONS, &typephp_application_argv) == FAILURE) {\n"
+                . "\t\tcleanup_ps_args(typephp_saved_argv);\n"
+                . "\t\treturn FAILURE;\n"
+                . "\t}\n",
+            'CLI argument setup',
+        );
+
+        $cleanup = "\tcleanup_ps_args(argv);\n";
+        return $this->patchOnce(
+            $code,
+            $cleanup,
+            "\ttypephp_cli_release_arguments(typephp_application_argv);\n"
+                . "\tcleanup_ps_args(typephp_saved_argv);\n",
+            'CLI argument cleanup',
+        );
+    }
+
+    private function readSource(string $suffix): string
+    {
+        $path = $this->phpSourceDirectory . $suffix;
+        $code = is_file($path) ? file_get_contents($path) : false;
+        if (!is_string($code)) {
+            throw new \RuntimeException("Cannot read PHP SAPI source: {$path}");
+        }
+        return $code;
+    }
+
+    private function patchOnce(string $code, string $needle, string $replacement, string $description): string
+    {
+        if (substr_count($code, $needle) !== 1) {
+            throw new \RuntimeException("Cannot apply {$description} patch to the selected PHP source");
+        }
+        return str_replace($needle, $replacement, $code);
+    }
+
+    private function replaceObject(string $objects, string $original, string $replacement): string
+    {
+        $parts = preg_split('/\s+/', trim($objects)) ?: [];
+        $index = array_search($original, $parts, true);
+        if ($index === false) {
+            throw new \RuntimeException("Cannot locate PHP SAPI object {$original}");
+        }
+        $parts[$index] = $replacement;
+        return implode(' ', $parts);
+    }
+
+    /** @param list<string> $basenames */
+    private function onlyEntryObjects(string $objects, array $basenames): string
+    {
+        $matches = [];
+        foreach (preg_split('/\s+/', trim($objects)) ?: [] as $object) {
+            if (in_array(basename($object), $basenames, true)) {
+                $matches[basename($object)] = $object;
+            }
+        }
+        foreach ($basenames as $basename) {
+            if (!isset($matches[$basename])) {
+                throw new \RuntimeException("Cannot locate patched PHP SAPI entry object {$basename}");
+            }
+        }
+        return implode(' ', array_map(
+            static fn (string $basename): string => $matches[$basename],
+            $basenames,
+        ));
+    }
+
+    /** @param list<string> $names @return array<string, string> */
+    private function readMakeVariables(string $makefile, array $names): array
+    {
+        $contents = (string) file_get_contents($makefile);
+        $values = [];
+        foreach ($names as $name) {
+            if (preg_match('/^' . preg_quote($name, '/') . '[ \t]*=[ \t]*(.*)$/m', $contents, $match) === 1) {
+                $values[$name] = trim($match[1]);
+            }
+        }
+        return $values;
+    }
+
+    /** @param list<string> $command */
+    private function run(array $command, string $directory): void
+    {
+        ($this->output)('$ ' . implode(' ', array_map('escapeshellarg', $command)));
+        $process = proc_open($command, [STDIN, STDOUT, STDERR], $pipes, $directory);
+        if (!is_resource($process) || proc_close($process) !== 0) {
+            throw new \RuntimeException('Command failed: ' . implode(' ', $command));
+        }
+    }
+
+    private function mkdir(string $directory): void
+    {
+        if (!is_dir($directory) && !mkdir($directory, 0777, true) && !is_dir($directory)) {
+            throw new \RuntimeException("Cannot create directory: {$directory}");
+        }
+    }
+
+    private function writeIfChanged(string $path, string $contents): void
+    {
+        if (is_file($path) && file_get_contents($path) === $contents) {
+            return;
+        }
+        AtomicFile::write($path, $contents);
+    }
+}
diff --git a/src/Build/SapiBuildConfiguration.php b/src/Build/SapiBuildConfiguration.php
new file mode 100644
index 00000000..1e1a5e3d
--- /dev/null
+++ b/src/Build/SapiBuildConfiguration.php
@@ -0,0 +1,37 @@
+<?php
+
+namespace TypePhp\Build;
+
+final class SapiBuildConfiguration
+{
+    /** @return list<string> */
+    public static function parseTargets(string|array $value): array
+    {
+        $values = is_array($value) ? $value : preg_split('/\s*,\s*/', trim($value));
+        if (!is_array($values)) {
+            $values = [];
+        }
+        $targets = [];
+        foreach ($values as $target) {
+            if (!is_string($target) || trim($target) === '') {
+                throw new \InvalidArgumentException('`sapi` entries must be non-empty strings');
+            }
+            $target = strtolower(trim($target));
+            if ($target === 'both') {
+                array_push($targets, 'cli', 'fpm');
+                continue;
+            }
+            if (!in_array($target, ['cli', 'fpm'], true)) {
+                throw new \InvalidArgumentException(
+                    "Invalid SAPI target `{$target}`. Expected cli, fpm, or both.",
+                );
+            }
+            $targets[] = $target;
+        }
+        $targets = array_values(array_unique($targets));
+        if ($targets === []) {
+            throw new \InvalidArgumentException('`sapi` must select cli, fpm, or both');
+        }
+        return $targets;
+    }
+}
diff --git a/src/Build/SapiExtensionConfiguration.php b/src/Build/SapiExtensionConfiguration.php
new file mode 100644
index 00000000..848fbfbf
--- /dev/null
+++ b/src/Build/SapiExtensionConfiguration.php
@@ -0,0 +1,71 @@
+<?php
+/**
+ * This file is part of TypePHP(AOT).
+ *
+ * @link     https://www.swoole.com/aot/
+ * @contact  service@swoole.com
+ */
+
+namespace TypePhp\Build;
+
+final class SapiExtensionConfiguration
+{
+    /** Extensions compiled unconditionally by php-src. */
+    private const array CORE_EXTENSIONS = [
+        'core', 'date', 'hash', 'json', 'pcre', 'random', 'reflection', 'spl', 'standard',
+    ];
+
+    /**
+     * @param list<string> $extensions
+     * @return list<string>
+     */
+    public static function configureOptions(string $phpSourceDirectory, array $extensions): array
+    {
+        $options = [];
+        foreach (SapiExtensionRequirements::merge($extensions) as $extension) {
+            if (in_array($extension, self::CORE_EXTENSIONS, true)) {
+                continue;
+            }
+            if ($extension === 'opcache') {
+                $options[] = '--enable-opcache';
+                continue;
+            }
+            $directory = $phpSourceDirectory . '/ext/' . str_replace('-', '_', $extension);
+            if (!is_dir($directory)) {
+                throw new \RuntimeException("PHP extension `{$extension}` is not bundled with php-src and cannot be linked into the SAPI runtime");
+            }
+            $option = self::findConfigureOption($directory, $extension);
+            // An extension directory without a configure switch is part of the
+            // core build and needs no extra argument.
+            if ($option !== null) {
+                $options[] = $option;
+            }
+        }
+        return array_values(array_unique($options));
+    }
+
+    private static function findConfigureOption(string $directory, string $extension): ?string
+    {
+        foreach ([$directory . '/config0.m4', $directory . '/config.m4'] as $file) {
+            if (!is_file($file)) {
+                continue;
+            }
+            $contents = (string) file_get_contents($file);
+            if (preg_match_all(
+                '/PHP_ARG_(WITH|ENABLE)\s*\(\s*\[?([A-Za-z0-9_-]+)\]?/i',
+                $contents,
+                $matches,
+                PREG_SET_ORDER,
+            ) === false) {
+                continue;
+            }
+            foreach ($matches as $match) {
+                if (SapiExtensionRequirements::normalize($match[2]) !== $extension) {
+                    continue;
+                }
+                return ($match[1] === 'WITH' ? '--with-' : '--enable-') . $match[2];
+            }
+        }
+        return null;
+    }
+}
diff --git a/src/Build/SapiExtensionRequirements.php b/src/Build/SapiExtensionRequirements.php
new file mode 100644
index 00000000..9ada9329
--- /dev/null
+++ b/src/Build/SapiExtensionRequirements.php
@@ -0,0 +1,89 @@
+<?php
+/**
+ * This file is part of TypePHP(AOT).
+ *
+ * @link     https://www.swoole.com/aot/
+ * @contact  service@swoole.com
+ */
+
+namespace TypePhp\Build;
+
+final class SapiExtensionRequirements
+{
+    /**
+     * @param list<string> ...$groups
+     * @return list<string>
+     */
+    public static function merge(array ...$groups): array
+    {
+        $extensions = [];
+        foreach ($groups as $group) {
+            foreach ($group as $extension) {
+                $name = self::normalize($extension);
+                if ($name !== '') {
+                    $extensions[$name] = true;
+                }
+            }
+        }
+        $result = array_keys($extensions);
+        sort($result, SORT_STRING);
+        return $result;
+    }
+
+    /** @param list<string> $files @return list<string> */
+    public static function fromEmbeddedVendorFiles(array $files): array
+    {
+        $manifests = [];
+        foreach ($files as $file) {
+            $vendor = self::vendorRoot($file);
+            if ($vendor !== null) {
+                $manifest = dirname($vendor) . DIRECTORY_SEPARATOR . 'composer.json';
+                if (is_file($manifest)) {
+                    $manifests[$manifest] = true;
+                }
+            }
+        }
+        $extensions = [];
+        foreach (array_keys($manifests) as $manifest) {
+            $decoded = json_decode((string) file_get_contents($manifest), true);
+            if (!is_array($decoded)) {
+                throw new \RuntimeException("Invalid Composer manifest: {$manifest}");
+            }
+            $require = $decoded['require'] ?? [];
+            if (!is_array($require)) {
+                throw new \RuntimeException("Composer `require` must be an object: {$manifest}");
+            }
+            foreach (array_keys($require) as $package) {
+                if (is_string($package) && str_starts_with(strtolower($package), 'ext-')) {
+                    $extensions[] = substr($package, 4);
+                }
+            }
+        }
+        return self::merge($extensions);
+    }
+
+    public static function normalize(string $extension): string
+    {
+        $extension = strtolower(trim($extension));
+        if (str_starts_with($extension, 'ext-')) {
+            $extension = substr($extension, 4);
+        }
+        $extension = str_replace(' ', '-', $extension);
+        return match ($extension) {
+            'zend-opcache', 'opcache' => 'opcache',
+            default => str_replace('_', '-', $extension),
+        };
+    }
+
+    private static function vendorRoot(string $file): ?string
+    {
+        $directory = is_dir($file) ? $file : dirname($file);
+        while ($directory !== '' && $directory !== dirname($directory)) {
+            if (basename($directory) === 'vendor' && is_file($directory . '/autoload.php')) {
+                return $directory;
+            }
+            $directory = dirname($directory);
+        }
+        return null;
+    }
+}
diff --git a/src/Build/SapiPhpBuild.php b/src/Build/SapiPhpBuild.php
new file mode 100644
index 00000000..bb9e9063
--- /dev/null
+++ b/src/Build/SapiPhpBuild.php
@@ -0,0 +1,25 @@
+<?php
+/**
+ * This file is part of TypePHP(AOT).
+ *
+ * @link     https://www.swoole.com/aot/
+ * @contact  service@swoole.com
+ */
+
+namespace TypePhp\Build;
+
+final readonly class SapiPhpBuild
+{
+    public function __construct(
+        public string $sourceDirectory,
+        public string $buildDirectory,
+        public string $prefix,
+        public string $phpxArchive,
+        /** @var array<string, string> */
+        public array $sapiArchives,
+        public string $version,
+        /** @var list<string> */
+        public array $enabledExtensions = [],
+    ) {
+    }
+}
diff --git a/src/Build/SapiPhpBuilder.php b/src/Build/SapiPhpBuilder.php
new file mode 100644
index 00000000..77f3eb9e
--- /dev/null
+++ b/src/Build/SapiPhpBuilder.php
@@ -0,0 +1,368 @@
+<?php
+/**
+ * This file is part of TypePHP(AOT).
+ *
+ * @link     https://www.swoole.com/aot/
+ * @contact  service@swoole.com
+ */
+
+namespace TypePhp\Build;
+
+use TypePhp\Installer\PhpBuildConfiguration;
+
+final class SapiPhpBuilder
+{
+    private readonly \Closure $output;
+
+    /** @param callable(string):void $output */
+    public function __construct(
+        private readonly string $phpxSourceDirectory,
+        callable $output,
+    ) {
+        $this->output = \Closure::fromCallable($output);
+    }
+
+    /**
+     * @param list<string> $targets
+     * @param list<string> $requiredExtensions
+     */
+    public function prepare(
+        string $phpVersion,
+        array $targets,
+        int $jobs,
+        array $requiredExtensions = [],
+    ): SapiPhpBuild {
+        if (PHP_OS_FAMILY !== 'Linux' && PHP_OS_FAMILY !== 'Darwin') {
+            throw new \RuntimeException('Self-contained SAPI builds currently require Linux or macOS');
+        }
+        if ($targets === [] || array_diff($targets, ['cli', 'fpm']) !== []) {
+            throw new \InvalidArgumentException('SAPI targets must contain cli, fpm, or both');
+        }
+        $source = (new OfficialPhpSource(
+            OfficialPhpSource::defaultCacheDirectory(),
+            $this->output,
+        ))->prepare($phpVersion);
+        $sourceVersion = OfficialPhpSource::version($source);
+        $baseOptions = $this->sourceConfigureOptions($source);
+        $requiredExtensions = SapiExtensionRequirements::merge($requiredExtensions);
+        $extensionOptions = SapiExtensionConfiguration::configureOptions($source, $requiredExtensions);
+        // Build both official executable SAPIs once. Individual projects can
+        // then select either archive without configuring or compiling php-src.
+        $runtimeTargets = ['cli', 'fpm'];
+        $identity = [
+            $sourceVersion,
+            $baseOptions,
+            $runtimeTargets,
+            PHP_OS_FAMILY,
+            php_uname('m'),
+            getenv('CC') ?: '',
+            getenv('CXX') ?: '',
+            filemtime($source . '/configure'),
+        ];
+        $compatibility = hash('sha256', json_encode($identity, JSON_THROW_ON_ERROR));
+        $cacheDirectory = OfficialPhpSource::defaultCacheDirectory() . '/sapi';
+        $cached = $this->findCompatibleRuntime(
+            $cacheDirectory,
+            $sourceVersion,
+            $compatibility,
+            $requiredExtensions,
+        );
+        if ($cached !== null) {
+            ($this->output)('Reusing private PHP runtime with extensions: '
+                . ($requiredExtensions === [] ? 'core' : implode(', ', $requiredExtensions)));
+            return $cached;
+        }
+
+        // Keep the original no-extension key stable so runtimes created by an
+        // earlier TypePHP version can be adopted without rebuilding php-src.
+        $fingerprintInput = $extensionOptions === [] ? $identity : [...$identity, $extensionOptions];
+        $fingerprint = substr(hash('sha256', json_encode($fingerprintInput, JSON_THROW_ON_ERROR)), 0, 16);
+        $root = $cacheDirectory . '/php-'
+            . $sourceVersion . '-' . $fingerprint;
+        $this->mkdir($root);
+        $lock = fopen($root . '/build.lock', 'c+');
+        if ($lock === false || !flock($lock, LOCK_EX)) {
+            throw new \RuntimeException("Unable to lock SAPI runtime cache: {$root}");
+        }
+        try {
+            $build = $root . '/build';
+            $prefix = $root . '/install';
+            $this->mkdir($build);
+            $this->mkdir($prefix . '/lib/conf.d');
+
+            $options = PhpBuildConfiguration::deriveSapi(
+                [...$baseOptions, ...$extensionOptions],
+                $prefix,
+                $runtimeTargets,
+            );
+            $configured = $build . '/.typephp-configure.json';
+            $configuration = json_encode($options, JSON_PRETTY_PRINT | JSON_UNESCAPED_SLASHES | JSON_THROW_ON_ERROR);
+            if (!is_file($build . '/Makefile') || @file_get_contents($configured) !== $configuration) {
+                ($this->output)('Configuring private PHP ' . $sourceVersion . ' SAPI runtime');
+                $this->run([$source . '/configure', ...$options], $build);
+                AtomicFile::write($configured, $configuration);
+            }
+
+            $php = $prefix . '/bin/php';
+            $fpm = $prefix . '/sbin/php-fpm';
+            $needsInstall = !is_executable($php) || !is_executable($fpm);
+            if ($needsInstall) {
+                ($this->output)('Building private PHP runtime (cached across application builds)');
+                $this->run(['make', '-j' . max(1, $jobs)], $build);
+                $this->run(['make', 'install'], $build);
+            }
+
+            $sapiArchives = $this->buildSapiArchives($build, $root, $jobs);
+
+            $phpxBuild = $root . '/phpx-build';
+            $phpxArchive = $phpxBuild . '/lib/libphpx.a';
+            if (!is_file($phpxArchive)) {
+                ($this->output)('Building static PHPX runtime');
+                $this->run([
+                    'cmake',
+                    '-S', $this->phpxSourceDirectory . '/sapi-static',
+                    '-B', $phpxBuild,
+                    '-DCMAKE_BUILD_TYPE=Release',
+                    '-DPHPX_ROOT=' . $this->phpxSourceDirectory,
+                    '-DPHPX_PHP_PREFIX=' . $prefix,
+                ], $root);
+                $this->run([
+                    'cmake', '--build', $phpxBuild, '--parallel', (string) max(1, $jobs),
+                ], $root);
+            }
+            if (!is_executable($php) || !is_file($phpxArchive)) {
+                throw new \RuntimeException('Private SAPI runtime build did not produce PHP CLI and libphpx.a');
+            }
+            $enabledExtensions = $this->detectEnabledExtensions($php);
+            $missing = array_values(array_diff($requiredExtensions, $enabledExtensions));
+            if ($missing !== []) {
+                throw new \RuntimeException('Private PHP runtime is missing required extensions after build: ' . implode(', ', $missing));
+            }
+            AtomicFile::write($root . '/runtime.json', json_encode([
+                'version' => $sourceVersion,
+                'compatibility' => $compatibility,
+                'requested_extensions' => $requiredExtensions,
+                'enabled_extensions' => $enabledExtensions,
+                'configure_options' => $options,
+            ], JSON_PRETTY_PRINT | JSON_UNESCAPED_SLASHES | JSON_THROW_ON_ERROR) . PHP_EOL);
+            return new SapiPhpBuild(
+                $source,
+                $build,
+                $prefix,
+                $phpxArchive,
+                $sapiArchives,
+                $sourceVersion,
+                $enabledExtensions,
+            );
+        } finally {
+            flock($lock, LOCK_UN);
+            fclose($lock);
+        }
+    }
+
+    /** @param list<string> $requiredExtensions */
+    private function findCompatibleRuntime(
+        string $cacheDirectory,
+        string $sourceVersion,
+        string $compatibility,
+        array $requiredExtensions,
+    ): ?SapiPhpBuild {
+        $matches = [];
+        foreach (glob($cacheDirectory . '/php-' . $sourceVersion . '-*') ?: [] as $root) {
+            $manifest = $root . '/runtime.json';
+            if (!is_file($manifest)) {
+                continue;
+            }
+            $metadata = json_decode((string) file_get_contents($manifest), true);
+            if (!is_array($metadata) || ($metadata['compatibility'] ?? null) !== $compatibility) {
+                continue;
+            }
+            $enabled = SapiExtensionRequirements::merge(
+                is_array($metadata['enabled_extensions'] ?? null) ? $metadata['enabled_extensions'] : [],
+            );
+            if (array_diff($requiredExtensions, $enabled) !== []) {
+                continue;
+            }
+            $runtime = $this->runtimeFromRoot($root, $sourceVersion, $enabled);
+            if ($runtime !== null) {
+                $matches[] = [$runtime, count($enabled), filemtime($manifest) ?: 0];
+            }
+        }
+        usort($matches, static fn (array $left, array $right): int => $left[1] <=> $right[1] ?: $right[2] <=> $left[2]);
+        return $matches[0][0] ?? null;
+    }
+
+    /** @param list<string> $enabledExtensions */
+    private function runtimeFromRoot(
+        string $root,
+        string $version,
+        array $enabledExtensions,
+    ): ?SapiPhpBuild {
+        $build = $root . '/build';
+        $prefix = $root . '/install';
+        $phpxArchive = $root . '/phpx-build/lib/libphpx.a';
+        $archives = [
+            'cli' => $root . '/lib/libphp-cli.a',
+            'fpm' => $root . '/lib/libphp-fpm.a',
+        ];
+        if (!is_executable($prefix . '/bin/php')
+            || !is_file($phpxArchive)
+            || !is_file($archives['cli'])
+            || !is_file($archives['fpm'])
+            || !is_file($build . '/Makefile')
+        ) {
+            return null;
+        }
+        $source = OfficialPhpSource::defaultCacheDirectory() . '/src/php-' . $version;
+        return new SapiPhpBuild(
+            $source,
+            $build,
+            $prefix,
+            $phpxArchive,
+            $archives,
+            $version,
+            $enabledExtensions,
+        );
+    }
+
+    /** @return list<string> */
+    private function detectEnabledExtensions(string $php): array
+    {
+        $process = proc_open(
+            [$php, '-n', '-r', 'echo json_encode(get_loaded_extensions());'],
+            [0 => ['file', '/dev/null', 'r'], 1 => ['pipe', 'w'], 2 => ['pipe', 'w']],
+            $pipes,
+        );
+        if (!is_resource($process)) {
+            throw new \RuntimeException("Unable to inspect private PHP extensions: {$php}");
+        }
+        $stdout = stream_get_contents($pipes[1]);
+        $stderr = stream_get_contents($pipes[2]);
+        fclose($pipes[1]);
+        fclose($pipes[2]);
+        $status = proc_close($process);
+        $decoded = is_string($stdout) ? json_decode($stdout, true) : null;
+        if ($status !== 0 || !is_array($decoded)) {
+            throw new \RuntimeException("Unable to inspect private PHP extensions: {$php}" . (is_string($stderr) && trim($stderr) !== '' ? PHP_EOL . trim($stderr) : ''));
+        }
+        return SapiExtensionRequirements::merge(array_values(array_filter($decoded, 'is_string')));
+    }
+
+    /** @return array<string, string> */
+    private function buildSapiArchives(string $build, string $root, int $jobs): array
+    {
+        $libraryDirectory = $root . '/lib';
+        $this->mkdir($libraryDirectory);
+        $archives = [
+            'cli' => $libraryDirectory . '/libphp-cli.a',
+            'fpm' => $libraryDirectory . '/libphp-fpm.a',
+        ];
+        if (is_file($archives['cli']) && is_file($archives['fpm'])) {
+            return $archives;
+        }
+        // The normal PHP build creates every core and SAPI object. Archive
+        // them once, excluding the two entry objects that TypePHP patches to
+        // accept embedded primary scripts.
+        $this->run(['make', '-j' . max(1, $jobs)], $build);
+        $variables = $this->readMakeVariables($build . '/Makefile', [
+            'PHP_GLOBAL_OBJS', 'PHP_CLI_OBJS', 'PHP_FPM_OBJS',
+        ]);
+        foreach ([
+            'cli' => ['PHP_CLI_OBJS', 'sapi/cli/php_cli.lo'],
+            'fpm' => ['PHP_FPM_OBJS', 'sapi/fpm/fpm/fpm_main.lo'],
+        ] as $target => [$variable, $entryObject]) {
+            if (is_file($archives[$target])) {
+                continue;
+            }
+            $objects = $this->objectFiles(
+                ($variables['PHP_GLOBAL_OBJS'] ?? '') . ' ' . ($variables[$variable] ?? ''),
+                $entryObject,
+                $build,
+            );
+            ($this->output)('Caching PHP ' . strtoupper($target) . ' runtime: ' . $archives[$target]);
+            $temporary = $archives[$target] . '.part-' . bin2hex(random_bytes(6));
+            $this->run(['ar', 'rcs', $temporary, ...$objects], $build);
+            if (!rename($temporary, $archives[$target])) {
+                @unlink($temporary);
+                throw new \RuntimeException('Unable to store PHP SAPI archive: ' . $archives[$target]);
+            }
+        }
+        return $archives;
+    }
+
+    /** @return list<string> */
+    private function objectFiles(string $value, string $excluded, string $build): array
+    {
+        $objects = [];
+        foreach (preg_split('/\s+/', trim($value)) ?: [] as $object) {
+            if ($object === '' || $object === $excluded) {
+                continue;
+            }
+            $object = preg_replace('/\.lo$/', '.o', $object) ?? $object;
+            $path = str_starts_with($object, '/') ? $object : $build . '/' . $object;
+            if (!is_file($path)) {
+                throw new \RuntimeException("PHP build object does not exist: {$path}");
+            }
+            $objects[] = $path;
+        }
+        if ($objects === []) {
+            throw new \RuntimeException('PHP build did not publish objects for the requested SAPI archive');
+        }
+        return $objects;
+    }
+
+    /** @param list<string> $names @return array<string, string> */
+    private function readMakeVariables(string $makefile, array $names): array
+    {
+        $contents = (string) file_get_contents($makefile);
+        $values = [];
+        foreach ($names as $name) {
+            if (preg_match('/^' . preg_quote($name, '/') . '[ \t]*=[ \t]*(.*)$/m', $contents, $match) === 1) {
+                $values[$name] = trim($match[1]);
+            }
+        }
+        return $values;
+    }
+
+    /** @return list<string> */
+    private function sourceConfigureOptions(string $source): array
+    {
+        $configNice = $source . '/config.nice';
+        if (!is_file($configNice)) {
+            return ['--enable-zts', '--enable-mbstring', '--enable-sockets', '--with-zlib'];
+        }
+        $contents = (string) file_get_contents($configNice);
+        $contents = preg_replace('/^#!.*\n|^#.*\n/m', '', $contents) ?? $contents;
+        $contents = str_replace(["\\\r\n", "\\\n", '"$@"', "'$@'"], [' ', ' ', '', ''], $contents);
+        $options = PhpBuildConfiguration::parseShellWords($contents);
+        return array_values(array_filter($options, static fn (string $value): bool => str_starts_with($value, '--')));
+    }
+
+    /** @param list<string> $command */
+    private function run(array $command, string $directory): void
+    {
+        ($this->output)('$ ' . implode(' ', array_map('escapeshellarg', $command)));
+        $logPath = rtrim($directory, '/\\') . '/.typephp-build.log';
+        $log = fopen($logPath, 'ab');
+        if ($log === false) {
+            throw new \RuntimeException("Unable to open SAPI build log: {$logPath}");
+        }
+        fwrite($log, PHP_EOL . '$ ' . implode(' ', array_map('escapeshellarg', $command)) . PHP_EOL);
+        $process = proc_open($command, [STDIN, $log, $log], $pipes, $directory);
+        $status = is_resource($process) ? proc_close($process) : -1;
+        fclose($log);
+        if ($status !== 0) {
+            $contents = (string) @file_get_contents($logPath);
+            $lines = preg_split('/\R/', trim($contents)) ?: [];
+            $tail = implode(PHP_EOL, array_slice($lines, -40));
+            throw new \RuntimeException('Command failed: ' . implode(' ', $command) . PHP_EOL . 'Build log: ' . $logPath . ($tail === '' ? '' : PHP_EOL . $tail));
+        }
+    }
+
+    private function mkdir(string $directory): void
+    {
+        if (!is_dir($directory) && !mkdir($directory, 0777, true) && !is_dir($directory)) {
+            throw new \RuntimeException("Cannot create SAPI build directory: {$directory}");
+        }
+    }
+}
diff --git a/src/Build/SourcePipelineTrait.php b/src/Build/SourcePipelineTrait.php
index 69db8d1f..07404c93 100644
--- a/src/Build/SourcePipelineTrait.php
+++ b/src/Build/SourcePipelineTrait.php
@@ -1,8 +1,8 @@
 <?php
 /**
- * This file is part of TypePHP.
+ * This file is part of TypePHP(AOT).
  *
- * @link     https://www.swoole.com/
+ * @link     https://www.swoole.com/aot/
  * @contact  service@swoole.com
  */
 
@@ -40,12 +40,10 @@ trait SourcePipelineTrait
 
     /** @var ?list<string> Zend extension arguments for the build PHP CLI. */
     private ?array $opcodeBuildExtensionArgs = null;
-
     private bool $opcodeBuildChecked = false;
     private string $opcodeBuildProbeError = '';
     private string $opcodeBuildPhpVersion = '';
     private string $opcodeBuildSignature = '';
-
     private ?string $embeddedArchiveFile = null;
 
     private function getOpcodeBuildPhpCli(): string
@@ -164,7 +162,7 @@ trait SourcePipelineTrait
         if (file_exists($destination)) {
             $base = $this->getBuildDir() . '/cache/legacy/' . basename($legacy);
             $destination = $base;
-            for ($suffix = 1; file_exists($destination); ++$suffix) {
+            for ($suffix = 1; file_exists($destination); $suffix++) {
                 $destination = $base . '-' . $suffix;
             }
         }
@@ -280,7 +278,8 @@ trait SourcePipelineTrait
         $progress = new Progressbar();
         $progress->barStyle([AnsiTerminal::FG_GREEN])
             ->percentageStyle([AnsiTerminal::TEXT_BOLD])
-            ->labelStyle([AnsiTerminal::FG_CYAN]);
+            ->labelStyle([AnsiTerminal::FG_CYAN])
+        ;
         $progress->renderInPlace(0, $total, $label);
         return $progress;
     }
@@ -359,10 +358,10 @@ trait SourcePipelineTrait
         $progress = $this->startOpcodeProgress('Opcodes', $batch->pendingCount());
         $blobs = $generator->compile(
             $batch,
-            fn(string $file) => $this->climate->warning(
+            fn (string $file) => $this->climate->warning(
                 'Skipping non-executable embedded PHP file: ' . $file,
             ),
-            fn(int $completed, int $total, string $file) => $this->updateOpcodeProgress(
+            fn (int $completed, int $total, string $file) => $this->updateOpcodeProgress(
                 $progress,
                 'Opcodes',
                 $completed,
@@ -445,7 +444,13 @@ trait SourcePipelineTrait
 
         $this->writeFile(
             $output,
-            (new EmbeddedTableRenderer())->render($embeddedArchive, $phpVersion, $this->isWindows()),
+            (new EmbeddedTableRenderer())->render(
+                $embeddedArchive,
+                $phpVersion,
+                $this->isWindows(),
+                !$this->isSapiBuild(),
+                $this->sapiEntryFile,
+            ),
         );
         $this->generatedProjectSources[$output] = true;
         return $sources;
@@ -504,10 +509,16 @@ trait SourcePipelineTrait
 
     private function validateLoadedProjectConfiguration(): void
     {
-        if ($this->embeddedFiles !== [] && !$this->isBuildModeBin()) {
+        if (in_array('cli', $this->sapiTargets, true) && $this->sapiEntryFile === null) {
+            $this->error('CLI SAPI builds require an `entry` PHP file');
+        }
+        if ($this->sapiEntryFile !== null && !in_array('cli', $this->sapiTargets, true)) {
+            $this->error('`entry` requires the CLI SAPI target');
+        }
+        if ($this->embeddedFiles !== [] && !$this->isBuildModeBin() && !$this->isSapiBuild()) {
             $this->error('`embedded-files` requires `mode: bin`');
         }
-        if ($this->embeddedFiles !== []) {
+        if ($this->embeddedFiles !== [] && !$this->isSapiBuild()) {
             $this->getOpcodeBuildExtensionArgs();
         }
         if ($this->climate->arguments->defined('force')) {
@@ -531,7 +542,7 @@ trait SourcePipelineTrait
         }
         return array_values(array_filter(
             $files,
-            static fn(string $file): bool => realpath($file) !== $generatedStub,
+            static fn (string $file): bool => realpath($file) !== $generatedStub,
         ));
     }
 
@@ -562,6 +573,12 @@ trait SourcePipelineTrait
             return;
         }
 
+        if ($this->isSapiBuild()) {
+            $this->prepareSapiBuildEnvironment();
+            $this->getOpcodeBuildExtensionArgs();
+            return;
+        }
+
         $platform = $this->getPlatform();
         $phpDir = $this->getPhpDir();
         if ($this->isBuildModeEmbed() && $platform instanceof Linux) {
@@ -572,7 +589,7 @@ trait SourcePipelineTrait
             }
         }
 
-        if (!($platform instanceof Wasi)) {
+        if (!$platform instanceof Wasi) {
             $this->validatePhpRuntimeMinimum($phpDir);
         }
 
@@ -601,7 +618,7 @@ trait SourcePipelineTrait
 
         // All Windows build modes depend on the PHPX import library and runtime.
         // Other platforms only run the existing checks in embedded build mode.
-        if (!$this->isNanoMode()
+        if (!$this->isNanoMode() && !$this->isSapiBuild()
             && ($this->isBuildModeEmbed() || $this->getPlatform() instanceof Windows)) {
             foreach ($this->getPlatform()->getBuildLibraryWarnings(
                 $this->getPhpDir(),
@@ -624,6 +641,90 @@ trait SourcePipelineTrait
         }
     }
 
+    /** @param list<string>|null $sourceDependencies */
+    private function prepareSapiBuildEnvironment(?array $sourceDependencies = null): void
+    {
+        try {
+            $composerDependencies = SapiExtensionRequirements::fromEmbeddedVendorFiles(
+                $this->embeddedFiles,
+            );
+            $requiredExtensions = SapiExtensionRequirements::merge(
+                $this->extensionDependencies,
+                $composerDependencies,
+                $sourceDependencies ?? [],
+            );
+        } catch (\Throwable $exception) {
+            $this->error('Unable to read SAPI extension requirements: ' . $exception->getMessage());
+        }
+        if ($this->sapiPhpBuildDirectory !== null
+            && array_diff($requiredExtensions, $this->sapiEnabledExtensions) === []
+        ) {
+            return;
+        }
+        try {
+            $runtime = (new SapiPhpBuilder(
+                $this->getPhpxDir(),
+                fn (string $message) => $this->output($message, 'lightBlue'),
+            ))->prepare(
+                $this->phpVersion,
+                $this->sapiTargets,
+                min(8, max(1, $this->maxJob)),
+                $requiredExtensions,
+            );
+        } catch (\Throwable $exception) {
+            $this->error('Unable to prepare self-contained PHP SAPI runtime: ' . $exception->getMessage());
+        }
+
+        $this->sapiPhpSourceDirectory = $runtime->sourceDirectory;
+        $this->sapiPhpBuildDirectory = $runtime->buildDirectory;
+        $this->sapiPhpPrefix = $runtime->prefix;
+        $this->sapiPhpxArchive = $runtime->phpxArchive;
+        $this->sapiRuntimeArchives = $runtime->sapiArchives;
+        $this->sapiEnabledExtensions = $runtime->enabledExtensions;
+        putenv('PHP_HOME=' . $runtime->prefix);
+        $_ENV['PHP_HOME'] = $runtime->prefix;
+        $this->validatePhpRuntimeMinimum($runtime->prefix);
+        $this->restartSourceCompilerWithSapiPhp($runtime);
+        $this->output(
+            'Using private PHP ' . $runtime->version . ' runtime from ' . $runtime->buildDirectory,
+            'green',
+        );
+    }
+
+    private function restartSourceCompilerWithSapiPhp(SapiPhpBuild $runtime): void
+    {
+        $targetMinor = implode('.', array_slice(explode('.', $runtime->version), 0, 2));
+        $compilerMinor = PHP_MAJOR_VERSION . '.' . PHP_MINOR_VERSION;
+        if ($targetMinor === $compilerMinor || !$this->compilerRuntime->sourceEntry) {
+            // The native tpc executable has no host Zend VM. Its opcode worker
+            // is already the private PHP CLI selected above, so there is no
+            // compiler PHP process to replace.
+            return;
+        }
+        if (getenv('TYPEPHP_SAPI_PHP_VERSION') === $targetMinor) {
+            throw new \RuntimeException("Unable to restart tpc with PHP {$targetMinor}; the restarted process still runs PHP {$compilerMinor}");
+        }
+
+        $script = realpath((string) ($_SERVER['SCRIPT_FILENAME'] ?? ''));
+        $php = $runtime->prefix . '/bin/php';
+        if ($script === false || !is_file($script) || !is_executable($php)) {
+            throw new \RuntimeException("Cannot restart the source compiler with target PHP {$targetMinor}");
+        }
+        global $argv;
+        $arguments = [$php, $script, ...array_slice($argv, 1)];
+        $this->output(
+            "Restarting tpc with PHP {$targetMinor} to match the SAPI runtime and OPcache format",
+            'lightBlue',
+        );
+        putenv('TYPEPHP_SAPI_PHP_VERSION=' . $targetMinor);
+        $_ENV['TYPEPHP_SAPI_PHP_VERSION'] = $targetMinor;
+        $process = proc_open($arguments, [STDIN, STDOUT, STDERR], $pipes, getcwd() ?: null);
+        if (!is_resource($process)) {
+            throw new \RuntimeException("Unable to start target PHP compiler: {$php}");
+        }
+        exit(proc_close($process));
+    }
+
     /** @param list<string> $files @return list<string> */
     private function preprocessProjectFiles(array $files, string $preparedKey): array
     {
@@ -637,6 +738,7 @@ trait SourcePipelineTrait
                     $this->prepareFile($file);
                 } catch (Unsupported $e) {
                     $this->output(' unsupported syntax: ' . $e->getMessage() . "\n" . ' skip: ' . $file . "\n", 'error');
+                    $this->registerUnsupportedSapiFile($file);
                     unset($files[$k]);
                 } catch (SyntaxError $e) {
                     $this->output(' syntax error: ' . $e->getMessage() . "\n" . ' skip: ' . $file . "\n", 'error');
@@ -676,7 +778,7 @@ trait SourcePipelineTrait
             $this->error(
                 "C/C++ compiler executable not found: {$program}\n" .
                 "Configured compiler command: {$compilerCommand}\n" .
-                "Install a supported compiler, or select one with --compiler, or set `cpp-compiler` in project.yml."
+                'Install a supported compiler, or select one with --compiler, or set `cpp-compiler` in project.yml.'
             );
         }
 
@@ -686,7 +788,7 @@ trait SourcePipelineTrait
             $this->error(
                 "Linker executable not found: {$program}\n" .
                 "Configured linker command: {$linkerCommand}\n" .
-                "Install the required linker or update compiler configuration."
+                'Install the required linker or update compiler configuration.'
             );
         }
     }
@@ -773,7 +875,14 @@ trait SourcePipelineTrait
             $this->composeTraitDeclarations($files);
             $previousPhase = $this->enterCompilerPhase(self::PHASE_CONVERT);
             $this->initializeProjectConversion($files);
-            return $this->finalizeProjectConversion($this->convertProjectFiles($files));
+            $conversion = $this->convertProjectFiles($files);
+            if ($this->isSapiBuild()) {
+                // Function and class ownership is known only after lowering all
+                // project bodies. Upgrade the cached PHP runtime before code is
+                // compiled if those bodies introduced another extension.
+                $this->prepareSapiBuildEnvironment($this->resolveExtensionDependencies());
+            }
+            return $this->finalizeProjectConversion($conversion);
         } finally {
             $this->splitTranslationUnitsEnabled = $previousSplitSetting;
             if ($previousPhase !== null) {
@@ -816,7 +925,7 @@ trait SourcePipelineTrait
                 if ($generated === null) {
                     continue;
                 }
-                ++$validSourceCount;
+                $validSourceCount++;
                 array_push($sourceFiles, ...$generated);
             } catch (Unsupported $error) {
                 $this->reportUnsupportedProjectFile($file, $error);
@@ -949,12 +1058,28 @@ trait SourcePipelineTrait
     {
         echo ' unsupported syntax: ' . $error->getMessage() . "\n";
         echo ' skip: ' . $file . "\n";
-        if (in_array($file, $this->embeddedPhpFiles, true)
+        if ($this->isSapiBuild()) {
+            $this->registerUnsupportedSapiFile($file);
+        } elseif (in_array($file, $this->embeddedPhpFiles, true)
             && !in_array($file, $this->embeddedOpcodeFiles, true)) {
             $this->embeddedOpcodeFiles[] = $file;
         }
     }
 
+    private function registerUnsupportedSapiFile(string $file): void
+    {
+        if (!$this->isSapiBuild()) {
+            return;
+        }
+        $file = realpath($file) ?: $file;
+        if (!in_array($file, $this->embeddedPhpFiles, true)) {
+            $this->embeddedPhpFiles[] = $file;
+        }
+        if (!in_array($file, $this->embeddedOpcodeFiles, true)) {
+            $this->embeddedOpcodeFiles[] = $file;
+        }
+    }
+
     /** @return list<string> */
     private function finalizeProjectConversion(ProjectConversion $conversion): array
     {
@@ -962,7 +1087,8 @@ trait SourcePipelineTrait
         $this->finalizeIncrementalConversionMetadata($files);
         // Trait and interface inputs may emit no standalone translation unit,
         // but at least one supported input must participate in the project.
-        if (!$conversion->hasValidSources()) {
+        if (!$conversion->hasValidSources()
+            && !($this->isSapiBuild() && $this->embeddedOpcodeFiles !== [])) {
             $this->stop('No valid source file found');
         }
 
@@ -974,8 +1100,11 @@ trait SourcePipelineTrait
         $sourceFiles = $conversion->sourceFiles();
         array_push($sourceFiles, ...$this->genClassArrayConstantLifecycleSources());
         $sourceFiles[] = $this->genExtension();
+        if ($this->isSapiBuild()) {
+            $sourceFiles[] = $this->genSapiInternalFunctions();
+        }
         if ($this->isBuildModeEmbed() && !$this->isNanoMode()
-            && ($this->embeddedFiles !== [] || $this->embeddedOpcodeFiles !== [])) {
+            && ($this->isSapiBuild() || $this->embeddedFiles !== [] || $this->embeddedOpcodeFiles !== [])) {
             array_push($sourceFiles, ...$this->genEmbeddedOpcodeTable());
         }
         if ($this->isNanoMode()) {
diff --git a/src/CompilerBase.php b/src/CompilerBase.php
index 9b898b40..bcf0b634 100644
--- a/src/CompilerBase.php
+++ b/src/CompilerBase.php
@@ -1,31 +1,41 @@
 <?php
 /**
- * This file is part of TypePHP.
+ * This file is part of TypePHP(AOT).
  *
- * @link     https://www.swoole.com/
+ * @link     https://www.swoole.com/aot/
  * @contact  service@swoole.com
  */
 
 namespace TypePhp;
 
+use League\CLImate\CLImate;
+use PhpParser\Modifiers;
+use PhpParser\Node;
+use PhpParser\Node\Expr;
+use PhpParser\Node\Expr\CallLike;
+use PhpParser\Node\Expr\Variable;
+use PhpParser\Node\FunctionLike;
+use PhpParser\NodeAbstract;
+use PhpParser\Parser;
+use PhpParser\ParserFactory;
+use PhpParser\PhpVersion;
+use PhpParser\PrettyPrinter;
 use TypePhp\Analysis\CompilationStatistics;
+use TypePhp\Backend\CompilerBackend;
+use TypePhp\Backend\CompilerFactory;
 use TypePhp\Build\AstCache;
 use TypePhp\Build\CompilerRuntime;
+use TypePhp\Build\NativeBuildConfigurationTrait;
 use TypePhp\Build\PhpxLocator;
 use TypePhp\Build\StableIdRegistry;
-
-use League\CLImate\CLImate;
-use TypePhp\Backend\CompilerBackend;
-use TypePhp\Backend\CompilerFactory;
-use TypePhp\Build\NativeBuildConfigurationTrait;
-use TypePhp\Entity\ArgInfo;
-use TypePhp\Context\FunctionContext;
 use TypePhp\Context\CompilationStateTrait;
+use TypePhp\Context\FunctionContext;
+use TypePhp\Diagnostics\CliDiagnosticReporter;
 use TypePhp\Diagnostics\CompilerDiagnosticTrait;
 use TypePhp\Diagnostics\CompileTimeAttributeDiagnostic;
-use TypePhp\Diagnostics\CliDiagnosticReporter;
 use TypePhp\Diagnostics\DiagnosticReporter;
 use TypePhp\Diagnostics\ThrowingDiagnosticReporter;
+use TypePhp\Entity\ArgInfo;
 use TypePhp\Entity\ClassDef;
 use TypePhp\Entity\ConstantDef;
 use TypePhp\Entity\FunctionDef;
@@ -33,24 +43,26 @@ use TypePhp\Entity\InterfaceDef;
 use TypePhp\Entity\MethodDef;
 use TypePhp\Entity\PropertyDef;
 use TypePhp\Exception\DynamicCall;
-use TypePhp\Exception\Redo;
 use TypePhp\Exception\Unsupported;
 use TypePhp\Generator\AnonClassGenerator;
 use TypePhp\Generator\CallArgumentGenerator;
 use TypePhp\Generator\ClosureGenerator;
 use TypePhp\Generator\FiberGenerator;
-use TypePhp\Generator\PlaceHolderGenerator;
 use TypePhp\Generator\ParameterCountCheckGenerator;
+use TypePhp\Generator\PlaceHolderGenerator;
 use TypePhp\Generator\PropertyPromotion;
 use TypePhp\Generator\Symbol;
-use TypePhp\Generator\Utils;
 use TypePhp\Generator\TypeCheckGenerator;
+use TypePhp\Generator\Utils;
+use TypePhp\Immutable\ImmutableSupportTrait;
+use TypePhp\NativeClass\NativeClassSupportTrait;
+use TypePhp\NativeClass\NativeGlobalTypeResolver;
+use TypePhp\Optimizer\FuncCallOptimizer;
+use TypePhp\Optimizer\LoopVarOptimizer;
 use TypePhp\Optimizer\SsaPropOptimizer;
 use TypePhp\Optimizer\SsaTypeOptimizer;
-use TypePhp\Optimizer\LoopVarOptimizer;
-use TypePhp\Parser\StdContainerTrait;
-use TypePhp\Parser\AssignOpTrait;
 use TypePhp\Parser\ArrayExpressionTrait;
+use TypePhp\Parser\AssignOpTrait;
 use TypePhp\Parser\AstNodeType;
 use TypePhp\Parser\BinaryOpTrait;
 use TypePhp\Parser\ClassConstantFetchTrait;
@@ -64,15 +76,15 @@ use TypePhp\Parser\MethodCallTrait;
 use TypePhp\Parser\NullsafeAccessTrait;
 use TypePhp\Parser\PropertyAccessTrait;
 use TypePhp\Parser\SelectionExpressionTrait;
+use TypePhp\Parser\StdContainerTrait;
 use TypePhp\Parser\SwitchTrait;
 use TypePhp\Parser\TypeConversionTrait;
 use TypePhp\Parser\TypeDetectionTrait;
 use TypePhp\Parser\UnaryExpressionTrait;
 use TypePhp\Parser\UniversalMethodCall;
-use TypePhp\Optimizer\FuncCallOptimizer;
-use TypePhp\Platform\Linux;
-use TypePhp\Platform\Ios;
 use TypePhp\Platform\Android;
+use TypePhp\Platform\Ios;
+use TypePhp\Platform\Linux;
 use TypePhp\Platform\Macos;
 use TypePhp\Platform\PlatformBase;
 use TypePhp\Platform\PlatformFactory;
@@ -80,31 +92,16 @@ use TypePhp\Platform\Windows;
 use TypePhp\Python\PythonModuleTrait;
 use TypePhp\Resolver\DeclarationSymbolTrait;
 use TypePhp\Resolver\MagicMethodDetector;
-use TypePhp\Resolver\PropertyAccessContext;
-use TypePhp\Resolver\NativePropertyAccess;
 use TypePhp\Resolver\NameResolutionTrait;
-use TypePhp\Resolver\PropertyAccessResult;
+use TypePhp\Resolver\NativePropertyAccess;
+use TypePhp\Resolver\PropertyAccessContext;
 use TypePhp\Resolver\PropertyAccessResolver;
+use TypePhp\Resolver\PropertyAccessResult;
 use TypePhp\Resolver\Reflection;
 use TypePhp\Symbol\SymbolRepository;
 use TypePhp\TypeSystem\CompositeTypeCheckerTrait;
 use TypePhp\TypeSystem\CompoundTypeDeclarationValidationTrait;
 use TypePhp\TypeSystem\NativeTypeCompatibilityTrait;
-use TypePhp\NativeClass\NativeClassSupportTrait;
-use TypePhp\NativeClass\NativeGlobalTypeResolver;
-use TypePhp\Immutable\ImmutableSupportTrait;
-use PhpParser\Modifiers;
-use PhpParser\Node;
-use PhpParser\Node\ArrayItem;
-use PhpParser\Node\Expr;
-use PhpParser\Node\Expr\CallLike;
-use PhpParser\Node\Expr\Variable;
-use PhpParser\Node\FunctionLike;
-use PhpParser\NodeAbstract;
-use PhpParser\Parser;
-use PhpParser\ParserFactory;
-use PhpParser\PhpVersion;
-use PhpParser\PrettyPrinter;
 
 class CompilerBase implements PropertyAccessContext
 {
@@ -377,12 +374,12 @@ class CompilerBase implements PropertyAccessContext
     public const string BUILD_MODE_BIN = 'bin';
     public const string BUILD_MODE_EXT = 'ext';
     public const string BUILD_MODE_LIB = 'lib';
+    public const string BUILD_MODE_SAPI = 'sapi';
     public const string ENTRY_FUNCTION = 'main';
     protected const string PHASE_IDLE = 'idle';
     protected const string PHASE_PREPARE = 'prepare';
     protected const string PHASE_COMPOSE = 'compose';
     protected const string PHASE_CONVERT = 'convert';
-
     protected string $lang = 'PHP';
     protected bool $verbose = false;
     protected int $indentLevel = 0;
@@ -402,6 +399,7 @@ class CompilerBase implements PropertyAccessContext
      * @var array<string, int>
      */
     protected array $classMap = [];
+
     /**
      * Built-in / compiled-output (module-lifetime) class name → ID. Lazily
      * populated after PHP startup and NOT cleared on RSHUTDOWN.
@@ -409,6 +407,7 @@ class CompilerBase implements PropertyAccessContext
      */
     protected array $persistentClassMap = [];
     protected int $persistentClassIndex = 0;
+
     /**
      * @var array<string, int>
      */
@@ -422,6 +421,7 @@ class CompilerBase implements PropertyAccessContext
      * @var array<string, int>
      */
     protected array $funcMap = [];
+
     /**
      * Built-in / compiled-output (module-lifetime) function/method → ID. Lazily
      * populated after PHP startup and NOT cleared on RSHUTDOWN.
@@ -430,6 +430,7 @@ class CompilerBase implements PropertyAccessContext
      */
     protected array $persistentFuncMap = [];
     protected int $persistentFuncIndex = 0;
+
     /**
      * Declared-property offset cache for built-in / compiled-output classes.
      * Key is `Class::prop`; lazily populated and NOT cleared on RSHUTDOWN.
@@ -439,6 +440,7 @@ class CompilerBase implements PropertyAccessContext
      */
     protected array $persistentPropMap = [];
     protected int $persistentPropIndex = 0;
+
     /**
      * Per-generated-access-site Zend object-handler cache slots. Unlike the
      * declared-property offset cache above, these are request-local and may
@@ -448,11 +450,14 @@ class CompilerBase implements PropertyAccessContext
     protected int $methodCallCacheIndex = 0;
     protected int $functionCallCacheIndex = 0;
     protected int $functionResolutionCacheIndex = 0;
+
     /** @var array<string, int> Per-function ordinal used to name dynamic cache sites. */
     protected array $cacheSiteOrdinals = [];
+
     /** Separates declaration-expression sites from executable function bodies. */
     protected string $cacheSitePass = 'body';
     protected ?StableIdRegistry $stableIdRegistry = null;
+
     /** @var array<string, array<Node\Stmt>> Prepared declaration ASTs keyed by real path. */
     protected array $preparedFileAsts = [];
     protected bool $traitDeclarationsComposed = false;
@@ -502,8 +507,10 @@ class CompilerBase implements PropertyAccessContext
      * @var array<string, array<string>>
      */
     protected array $symbolCallInFile = [];
+
     /** @var array<string, string> Canonical PHP file => generated declaration header. */
     protected array $declarationHeaderFiles = [];
+
     /** @var array<string, true> C++ translation units emitted by this compiler run. */
     protected array $generatedProjectSources = [];
     protected array $redoAfterDeclare = [];
@@ -520,11 +527,14 @@ class CompilerBase implements PropertyAccessContext
     protected string $ldflags = '';
     protected array $linkLibs = [];    // --link-lib / -l: user-specified libraries to link
     protected array $linkPaths = [];   // --link-path / -L: user-specified library search paths
+
     /** @var list<string> Precompiled project object files linked into the target. */
     protected array $projectObjectFiles = [];
+
     /** @var list<string> Required PHP modules recorded in zend_module_entry.deps. */
     protected array $extensionDependencies = [];
     protected string $extensionVersion = '';
+
     /** @var array<string, string> Custom rows shown in the module's phpinfo section. */
     protected array $extensionInfo = [];
     protected bool $debug = false;
@@ -538,16 +548,38 @@ class CompilerBase implements PropertyAccessContext
     protected array $userDefines = [];       // --define / -D: user-provided preprocessor macros
     protected bool $enableLto = false;       // --lto: enable Link Time Optimization (-flto)
     protected bool $fullStatic = false;      // --full-static: link against the bundled fully-static SDK
+
     /** Generate a VM-less program entry for the Composer php-nano runtime. */
     protected bool $nanoMode = false;
+
+    /** @var list<string> */
+    protected array $sapiTargets = [];
+
+    /** Absolute path of the embedded primary script used by the CLI SAPI. */
+    protected ?string $sapiEntryFile = null;
+    protected ?string $sapiPhpSourceDirectory = null;
+    protected ?string $sapiPhpBuildDirectory = null;
+    protected ?string $sapiPhpPrefix = null;
+    protected ?string $sapiPhpxArchive = null;
+
+    /** @var array<string, string> */
+    protected array $sapiRuntimeArchives = [];
+
+    /** @var list<string> */
+    protected array $sapiEnabledExtensions = [];
+
     /** Enforce the VM-free and external-command restrictions of `--nano`. */
     protected bool $nanoPolicyMode = false;
+
     /** @var list<string> Include directories published by Nano Composer packages. */
     protected array $nanoRuntimeIncludePaths = [];
+
     /** @var list<string> */
     protected array $nanoRuntimeDefines = [];
+
     /** @var array<string, true> Package source files compiled into a Nano executable. */
     protected array $nanoRuntimeSources = [];
+
     /** Latest header timestamp used by the shared object-cache path. */
     protected int $nanoRuntimeHeaderMtime = 0;
     protected string $file;
@@ -563,6 +595,7 @@ class CompilerBase implements PropertyAccessContext
     protected array $useAliases = [];
     protected array $useFunctions = [];
     protected array $useConstants = [];
+
     /** @var array<int, array<string, string>> Import aliases separated by class/function/constant domain. */
     protected array $useImportAliases = [];
 
@@ -572,28 +605,32 @@ class CompilerBase implements PropertyAccessContext
     protected string $class = '';
     protected string $parentClass = '';
     protected string $interface = '';
+
     /**
      * @var array<string, ConstantDef>
      */
     protected array $constants = [];
+
     /**
      * @var array<string, ClassDef>
      */
     protected array $classesDefineInFile = [];
+
     /**
      * @var array<string, InterfaceDef>
      */
     protected array $interfacesDefineInFile = [];
+
     /**
      * @var array<string, FunctionDef>
      */
     protected array $functionDefineInFile = [];
-
     protected ?FunctionDef $functionDef = null;
     protected ?ClassDef $classDef = null;
     protected ?MethodDef $methodDef = null;
     protected ?InterfaceDef $interfaceDef = null;
     protected bool $inGeneratorBody = false;
+
     /** Parameter-default helpers have no ordinary function-entry declaration block. */
     protected bool $allowLocalClassEntryHoisting = true;
     private ?DiagnosticReporter $diagnosticReporter = null;
@@ -610,22 +647,31 @@ class CompilerBase implements PropertyAccessContext
         'GLOBALS'  => Type::ARRAY,
     ];
     protected array $globalVars = [];
+
     /** @var array<string, array<string, string>> PHP source => global slot => inferred type. */
     protected array $globalVarsInFile = [];
+
     /** @var array<string, string> Global/static storage name => owning PHP file. */
     protected array $globalVarDeclInFile = [];
+
     /** @var array<string, string> Global/static Native pointer slot => class name. */
     protected array $nativeGlobalObjects = [];
+
     /** Immutable metadata shared by Native global pre-discovery and lowering. */
     protected ?NativeGlobalTypeResolver $nativeGlobalTypeResolver = null;
+
     /** @var array<string, string> Lowercase class name => declared Native class name. */
     protected array $nativeClassDeclarations = [];
+
     /** @var array<string, true> Request-reset initialization flags for Native static locals. */
     protected array $nativeStaticInitializers = [];
+
     /** @var array<string, array<string, true>> PHP source => Native static initialization flags. */
     protected array $nativeStaticInitializersInFile = [];
+
     /** @var array<string, string> Native static initialization flag => owning PHP file. */
     protected array $nativeStaticInitializerDeclInFile = [];
+
     /** Box inferred integer locals in php::Var to retain Zend integer widening semantics. */
     protected bool $varIntTypes = false;
     protected bool $decimalTypes = false;
@@ -654,7 +700,7 @@ class CompilerBase implements PropertyAccessContext
     // Windows platform: store the detected PHP lib file paths.
     protected string $windowsPhpEmbedLib = '';  // Path to php8embed.lib
     protected string $windowsPhpCoreLib = '';   // Path to php8ts.lib or php8.lib
-    
+
     // New platform and compiler abstraction layers (optional to use).
     protected ?PlatformBase $platform = null;
     protected ?CompilerBackend $compilerBackend = null;
@@ -683,6 +729,7 @@ class CompilerBase implements PropertyAccessContext
 
     /** Whole-program usage collected during the convert phase. */
     protected CompilationStatistics $compilationStatistics;
+
     /** @var array<string, true> Fully resolved class names referenced by source code. */
     protected array $referencedClasses = [];
 
@@ -922,9 +969,25 @@ class CompilerBase implements PropertyAccessContext
         return $this->buildMode === self::BUILD_MODE_LIB;
     }
 
+    public function isBuildModeSapi(): bool
+    {
+        return $this->buildMode === self::BUILD_MODE_SAPI;
+    }
+
     public function isBuildModeEmbed(): bool
     {
-        return $this->isBuildModeBin() || $this->isBuildModeLib();
+        return $this->isBuildModeBin() || $this->isBuildModeLib() || $this->isBuildModeSapi();
+    }
+
+    public function isSapiBuild(): bool
+    {
+        return $this->sapiTargets !== [];
+    }
+
+    /** @return list<string> */
+    public function getSapiTargets(): array
+    {
+        return $this->sapiTargets;
     }
 
     public function getPhpDir(): string
@@ -1037,10 +1100,10 @@ class CompilerBase implements PropertyAccessContext
         if ($expr->getLine() === $this->debugLine) {
             dump($expr);
         }
-        if ($expr instanceof Node\Expr\BinaryOp) {
+        if ($expr instanceof Expr\BinaryOp) {
             $this->assertNativeObjectBinaryOperatorSupported($expr);
         }
-        if ($expr instanceof Expr\Variable) {
+        if ($expr instanceof Variable) {
             $varName = $this->parseIdentifier($expr);
             $this->requireVar($expr, $varName);
             if ($this->isStdContainer($varName)) {
@@ -1265,9 +1328,9 @@ class CompilerBase implements PropertyAccessContext
     /**
      * Resolve the ClassDef for an object expression (variable or $this).
      */
-    private function resolveObjectClassDef(Node\Expr $expr): ?ClassDef
+    private function resolveObjectClassDef(Expr $expr): ?ClassDef
     {
-        if ($expr instanceof Expr\Variable) {
+        if ($expr instanceof Variable) {
             $name = $this->parseIdentifier($expr);
             if ($name === 'this_' && $this->classDef) {
                 return $this->classDef;
@@ -1462,7 +1525,7 @@ class CompilerBase implements PropertyAccessContext
      */
     protected function materializeRefReturnAsValue(NodeAbstract $value, string $expr): string
     {
-        if ($value instanceof Expr\CallLike && $this->resolveRefReturningCall($value) !== false) {
+        if ($value instanceof CallLike && $this->resolveRefReturningCall($value) !== false) {
             $tmpVar = $this->addTmpVar(Type::VAR);
             return '(' . $tmpVar . ' = ' . $expr . ')';
         }
@@ -1773,14 +1836,7 @@ class CompilerBase implements PropertyAccessContext
         $persistentMethod = isset($this->persistentFuncMap[$key]);
         $persistentClass = isset($this->persistentClassMap[$class]);
         if ($persistentMethod !== $persistentClass) {
-            throw new \LogicException(sprintf(
-                'Cache lifetime mismatch for %s: method ID %d is %s, class ID %d is %s',
-                $key,
-                $funcId,
-                $persistentMethod ? 'persistent' : 'request-local',
-                $classId,
-                $persistentClass ? 'persistent' : 'request-local',
-            ));
+            throw new \LogicException(sprintf('Cache lifetime mismatch for %s: method ID %d is %s, class ID %d is %s', $key, $funcId, $persistentMethod ? 'persistent' : 'request-local', $classId, $persistentClass ? 'persistent' : 'request-local'));
         }
         $helper = $persistentMethod ? 'get_persistent_method' : 'get_method';
         $funcIdType = $persistentMethod ? 'PersistentFuncId' : 'RequestFuncId';
@@ -1949,9 +2005,9 @@ class CompilerBase implements PropertyAccessContext
         }
         if ($expr instanceof Node\Scalar\String_) {
             $value = trim($expr->value);
-            return $value !== '' && is_numeric($value) && (float)$value == 0.0;
+            return $value !== '' && is_numeric($value) && (float) $value == 0.0;
         }
-        if ($expr instanceof Node\Expr\ConstFetch or $expr instanceof Node\Expr\ClassConstFetch) {
+        if ($expr instanceof Expr\ConstFetch or $expr instanceof Expr\ClassConstFetch) {
             return in_array($this->parseExpr($expr), ['0L', '0LL']);
         }
         return false;
@@ -2328,7 +2384,7 @@ class CompilerBase implements PropertyAccessContext
         }
         if ($expr instanceof Expr\MethodCall && $expr->name instanceof Node\Identifier) {
             $class = $this->detectClassOfExpr($expr->var);
-            if ($class === '' && $expr->var instanceof Expr\Variable && is_string($expr->var->name)) {
+            if ($class === '' && $expr->var instanceof Variable && is_string($expr->var->name)) {
                 $var = $this->parseVariable($expr->var);
                 $class = $var === 'this_' ? $this->getFullClassName() : $this->getDeclaredObjectType($var);
             }
@@ -2670,7 +2726,7 @@ class CompilerBase implements PropertyAccessContext
             if ($function !== false) {
                 return $this->getFunction($function)->returnsByRef;
             }
-            $reflection = \TypePhp\Resolver\Reflection::getFunction(ltrim($this->getNamespacedFuncName($name), '\\'));
+            $reflection = Reflection::getFunction(ltrim($this->getNamespacedFuncName($name), '\\'));
             return $reflection?->returnsReference();
         }
         if ($expr instanceof Expr\FuncCall) {
@@ -2806,9 +2862,11 @@ class CompilerBase implements PropertyAccessContext
             }
             if ($this->functionDef->returnType === Type::VOID and !$this->context->inClosure) {
                 return 'return;';
-            } elseif ($this->shouldCheckClosureReturnType()) {
+            }
+            if ($this->shouldCheckClosureReturnType()) {
                 return $this->genClosureCheckedReturn(self::VALUE_NULL);
-            } elseif ($this->functionDef->returnTypeCheck && !$this->context->inClosure) {
+            }
+            if ($this->functionDef->returnTypeCheck && !$this->context->inClosure) {
                 return $this->genUnionCheckedReturn(self::VALUE_NULL);
             } else {
                 return 'return ' . self::VALUE_NULL . ';';
@@ -3223,9 +3281,8 @@ class CompilerBase implements PropertyAccessContext
         NodeAbstract $expr,
         string $class,
         string $const,
-        ?string $accessingClass = null
-    ): string|false
-    {
+        ?string $accessingClass = null,
+    ): string|false {
         if (!$this->hasClass($class)) {
             return false;
         }
@@ -3755,12 +3812,12 @@ class CompilerBase implements PropertyAccessContext
             $this->addLocalVar($tmpVar, Type::VAR);
             $read = $this->emitPropertyHookGetterCall($var, $getter);
             if ($isPre) {
-                $set = $this->emitPropertyHookSetterCall($var, $setter, new Expr\Variable($tmpVar));
+                $set = $this->emitPropertyHookSetterCall($var, $setter, new Variable($tmpVar));
                 $this->context->beforeStmtLines[] = "{$tmpVar} = {$read} {$op} 1; {$set};";
             } else {
                 $nextVar = $this->genTmpVarName();
                 $this->addLocalVar($nextVar, Type::VAR);
-                $set = $this->emitPropertyHookSetterCall($var, $setter, new Expr\Variable($nextVar));
+                $set = $this->emitPropertyHookSetterCall($var, $setter, new Variable($nextVar));
                 $this->context->beforeStmtLines[] = "{$tmpVar} = {$read};";
                 $this->context->afterStmtLines[] = "{$nextVar} = {$tmpVar} {$op} 1; {$set};";
             }
@@ -3858,7 +3915,7 @@ class CompilerBase implements PropertyAccessContext
         return false;
     }
 
-    protected function checkInternalFunctionArgCount(string $funcName, Node\Expr\FuncCall $expr): void
+    protected function checkInternalFunctionArgCount(string $funcName, Expr\FuncCall $expr): void
     {
         $ref = Reflection::getFunction($funcName);
         if ($ref) {
@@ -4199,7 +4256,6 @@ class CompilerBase implements PropertyAccessContext
      * argument to the callable on the right. Materialising the left operand
      * also avoids relying on C++ argument-evaluation order.
      */
-
     protected function parsePostOp(Expr\PostDec|Expr\PostInc $expr, string $op): string
     {
         if ($this->getTypedArrayAccessDefinition($expr->var) !== null) {
@@ -4791,10 +4847,10 @@ class CompilerBase implements PropertyAccessContext
         }
 
         if ($scope) {
-            return "php::include(php::Var($fileName), $type, php::Array{" . implode(', ', $scope) . '})';
+            return "php::include(php::Var({$fileName}), {$type}, php::Array{" . implode(', ', $scope) . '})';
         }
 
-        return "php::include(php::Var($fileName), $type)";
+        return "php::include(php::Var({$fileName}), {$type})";
     }
 
     protected function parseScalarFloat(Node\Scalar\Float_ $expr): string
@@ -5026,7 +5082,7 @@ class CompilerBase implements PropertyAccessContext
         $class = $this->getNativeArrayAccessClass($receiver, $access);
         if (!$this->isVarExpr($receiver)) {
             $receiverName = $this->materializeNativeObjectReceiver($receiver, $class);
-            $receiver = new Expr\Variable($receiverName, $receiver->getAttributes());
+            $receiver = new Variable($receiverName, $receiver->getAttributes());
         }
 
         $key = $this->addTmpVar(Type::VAR);
@@ -5034,7 +5090,7 @@ class CompilerBase implements PropertyAccessContext
         $this->context->beforeStmtLines[] = $key . ' = ' . $keyExpr . ';';
         $stableAccess = new Expr\ArrayDimFetch(
             $receiver,
-            new Expr\Variable($key, $access->dim->getAttributes()),
+            new Variable($key, $access->dim->getAttributes()),
             $access->getAttributes(),
         );
         $exists = $this->parseNativeArrayAccessCall(
@@ -5559,7 +5615,7 @@ class CompilerBase implements PropertyAccessContext
         if ($this->isVarExpr($left)) {
             $varName = '`$' . $this->parseIdentifier($left) . '`';
         }
-        $this->fatalError($left, "Cannot re-assign $varName from `{$fromType}` to `{$toType}`");
+        $this->fatalError($left, "Cannot re-assign {$varName} from `{$fromType}` to `{$toType}`");
     }
 
     protected function checkTypedReferenceAssignExpr(
@@ -5602,9 +5658,8 @@ class CompilerBase implements PropertyAccessContext
     protected function checkAccessibleByClassName(
         string $declaringClass,
         int $flags,
-        ?string $accessingClass = null
-    ): bool
-    {
+        ?string $accessingClass = null,
+    ): bool {
         if ($accessingClass !== null) {
             $accessingClass = ltrim($accessingClass, '\\');
             $scopeClassDef = $this->hasClass($accessingClass)
diff --git a/src/Installer/PhpBuildConfiguration.php b/src/Installer/PhpBuildConfiguration.php
index 2bb885b1..9e59ff08 100644
--- a/src/Installer/PhpBuildConfiguration.php
+++ b/src/Installer/PhpBuildConfiguration.php
@@ -150,4 +150,54 @@ final class PhpBuildConfiguration
             ...$result,
         ];
     }
+
+    /**
+     * Build a private CLI/FPM runtime from php-src. Every PHP extension remains
+     * static so the resulting executables never load host extension binaries.
+     *
+     * @param string|list<string> $configureOptions
+     * @param list<string> $targets
+     * @return list<string>
+     */
+    public static function deriveSapi(string|array $configureOptions, string $prefix, array $targets): array
+    {
+        $replace = [
+            '--prefix', '--with-config-file-path', '--with-config-file-scan-dir',
+            '--enable-cli', '--disable-cli', '--enable-fpm', '--disable-fpm',
+            '--enable-cgi', '--disable-cgi', '--enable-phpdbg', '--disable-phpdbg',
+            '--enable-embed', '--disable-embed', '--enable-opcache', '--disable-opcache',
+            '--with-pear', '--without-pear',
+        ];
+        $drop = ['--with-apxs', '--with-apxs2', '--with-fpm-systemd', ...self::PREFIX_DERIVED];
+        $result = [];
+        $options = is_string($configureOptions) ? self::parseShellWords($configureOptions) : $configureOptions;
+        foreach ($options as $option) {
+            if (!str_starts_with($option, '--')) {
+                continue;
+            }
+            $name = explode('=', $option, 2)[0];
+            if (in_array($name, $replace, true) || in_array($name, $drop, true)) {
+                continue;
+            }
+            // A private SAPI cannot depend on extension .so files. Configure's
+            // --enable-x=shared and --with-x=shared forms both accept the same
+            // option without the shared value to select static compilation.
+            $option = preg_replace('/=shared(?:,.*)?$/', '', $option) ?? $option;
+            $result[] = $option;
+        }
+
+        return array_values(array_unique([
+            '--prefix=' . $prefix,
+            '--with-config-file-path=' . $prefix . '/lib',
+            '--with-config-file-scan-dir=' . $prefix . '/lib/conf.d',
+            '--enable-cli',
+            in_array('fpm', $targets, true) ? '--enable-fpm' : '--disable-fpm',
+            '--disable-cgi',
+            '--disable-phpdbg',
+            '--disable-embed',
+            '--enable-opcache',
+            '--without-pear',
+            ...$result,
+        ]));
+    }
 }
diff --git a/src/Metadata/Constants.php b/src/Metadata/Constants.php
index 57536d21..45517c33 100644
--- a/src/Metadata/Constants.php
+++ b/src/Metadata/Constants.php
@@ -187,10 +187,15 @@ class Constants
         'mode' => [
             'longPrefix' => 'mode',
             'prefix' => 'm',
-            'description' => 'Build mode, -m bin(binary), -m lib(shared library), or -m ext(PHP extension), default: bin',
+            'description' => 'Build mode: bin, lib, ext, or sapi; default: bin',
             'required' => false,
             'defaultValue' => CompilerBase::BUILD_MODE_BIN,
         ],
+        'sapi' => [
+            'longPrefix' => 'sapi',
+            'description' => 'Build a self-contained PHP application SAPI: cli, fpm, or both',
+            'required' => false,
+        ],
         'run' => [
             'prefix' => 'r',
             'longPrefix' => 'run',
diff --git a/src/Platform/Android.php b/src/Platform/Android.php
index d77957cd..eb04a00e 100644
--- a/src/Platform/Android.php
+++ b/src/Platform/Android.php
@@ -71,7 +71,7 @@ final class Android extends UnixPlatform
         return [];
     }
 
-    public function buildPhpIncludePaths(string $phpDir): array
+    public function buildPhpIncludePaths(string $phpDir, bool $allowTargetVersion = false): array
     {
         $paths = [
             $phpDir . '/include/php',
diff --git a/src/Platform/Ios.php b/src/Platform/Ios.php
index 09dfca72..80ab5c51 100644
--- a/src/Platform/Ios.php
+++ b/src/Platform/Ios.php
@@ -45,7 +45,7 @@ class Ios extends UnixPlatform
      * Its path is resolved from PHPX_HOME by CompilerBase, and php-config is
      * never executed for the target.
      */
-    public function buildPhpIncludePaths(string $phpDir): array
+    public function buildPhpIncludePaths(string $phpDir, bool $allowTargetVersion = false): array
     {
         $paths = [
             $phpDir . '/include/php',
diff --git a/src/Platform/Macos.php b/src/Platform/Macos.php
index ee7956e7..2f7d59b6 100644
--- a/src/Platform/Macos.php
+++ b/src/Platform/Macos.php
@@ -57,10 +57,10 @@ class Macos extends UnixPlatform
      * Add the standard Apple Silicon and Intel Homebrew prefixes after the
      * selected PHP installation's include paths.
      */
-    public function buildPhpIncludePaths(string $phpDir): array
+    public function buildPhpIncludePaths(string $phpDir, bool $allowTargetVersion = false): array
     {
         return array_values(array_unique(array_merge(
-            parent::buildPhpIncludePaths($phpDir),
+            parent::buildPhpIncludePaths($phpDir, $allowTargetVersion),
             self::HOMEBREW_INCLUDE_PATHS,
         )));
     }
diff --git a/src/Platform/PlatformBase.php b/src/Platform/PlatformBase.php
index d1f9c256..423798ec 100644
--- a/src/Platform/PlatformBase.php
+++ b/src/Platform/PlatformBase.php
@@ -81,7 +81,7 @@ abstract class PlatformBase
     /**
      * Build the PHP include paths.
      */
-    abstract public function buildPhpIncludePaths(string $phpDir): array;
+    abstract public function buildPhpIncludePaths(string $phpDir, bool $allowTargetVersion = false): array;
 
     /**
      * Build the PHP library paths.
diff --git a/src/Platform/UnixPlatform.php b/src/Platform/UnixPlatform.php
index e1412071..8fdad6a2 100644
--- a/src/Platform/UnixPlatform.php
+++ b/src/Platform/UnixPlatform.php
@@ -224,15 +224,17 @@ abstract class UnixPlatform extends PlatformBase
     /**
      * Build the PHP include paths (obtained dynamically via php-config).
      */
-    public function buildPhpIncludePaths(string $phpDir): array
+    public function buildPhpIncludePaths(string $phpDir, bool $allowTargetVersion = false): array
     {
-        $key = $this->getPhpSdkCacheKey($phpDir);
-        return $this->phpIncludeCache[$key] ??= $this->resolvePhpIncludePaths($phpDir);
+        $key = $this->getPhpSdkCacheKey($phpDir) . ($allowTargetVersion ? ':target' : ':host');
+        return $this->phpIncludeCache[$key] ??= $this->resolvePhpIncludePaths($phpDir, $allowTargetVersion);
     }
 
-    private function resolvePhpIncludePaths(string $phpDir): array
+    private function resolvePhpIncludePaths(string $phpDir, bool $allowTargetVersion): array
     {
-        $phpConfigPath = $this->findPhpConfig($phpDir);
+        $phpConfigPath = $allowTargetVersion
+            ? $this->findTargetPhpConfig($phpDir)
+            : $this->findPhpConfig($phpDir);
         if ($phpConfigPath) {
             $includes = shell_exec(escapeshellarg($phpConfigPath) . ' --includes 2>/dev/null');
             if ($includes) {
@@ -267,6 +269,15 @@ abstract class UnixPlatform extends PlatformBase
         return $includePaths;
     }
 
+    private function findTargetPhpConfig(string $phpDir): ?string
+    {
+        $candidate = rtrim($phpDir, '/') . '/bin/php-config';
+        if (!is_executable($candidate)) {
+            throw new \RuntimeException("Target PHP does not provide an executable bin/php-config: {$phpDir}");
+        }
+        return $candidate;
+    }
+
     /**
      * Locate the php-config executable.
      */
diff --git a/src/Platform/Windows.php b/src/Platform/Windows.php
index 55589387..74334a53 100644
--- a/src/Platform/Windows.php
+++ b/src/Platform/Windows.php
@@ -238,7 +238,7 @@ class Windows extends PlatformBase
         return '/DEBUG';
     }
 
-    public function buildPhpIncludePaths(string $phpDir): array
+    public function buildPhpIncludePaths(string $phpDir, bool $allowTargetVersion = false): array
     {
         return $this->buildPhpSdkIncludePaths($phpDir);
     }
diff --git a/src/Translator.php b/src/Translator.php
index 949165bf..f8f63f16 100644
--- a/src/Translator.php
+++ b/src/Translator.php
@@ -1,8 +1,8 @@
 <?php
 /**
- * This file is part of TypePHP.
+ * This file is part of TypePHP(AOT).
  *
- * @link     https://www.swoole.com/
+ * @link     https://www.swoole.com/aot/
  * @contact  service@swoole.com
  */
 
@@ -11,6 +11,13 @@ namespace TypePhp;
 use Ajaxray\AnsiKit\AnsiTerminal;
 use Ajaxray\AnsiKit\Components\Progressbar;
 use MJS\TopSort\Implementations\StringSort;
+use PhpParser\Modifiers;
+use PhpParser\Node;
+use PhpParser\Node\Expr;
+use PhpParser\NodeAbstract;
+use PhpParser\NodeTraverser;
+use PhpParser\NodeVisitor\CloningVisitor;
+use PhpParser\NodeVisitor\NameResolver;
 use TypePhp\Analysis\CompilationStatistics;
 use TypePhp\Analysis\LocalClosureAnalyzer;
 use TypePhp\Analysis\NativeObjectStackPromotionAnalyzer;
@@ -20,19 +27,22 @@ use TypePhp\Build\CompileOptions;
 use TypePhp\Build\CompilerRuntime;
 use TypePhp\Build\FileScanner;
 use TypePhp\Build\IncrementalCompilationTrait;
-use TypePhp\Build\NativeCommandOptionsTrait;
-use TypePhp\Build\NativeBuilder;
 use TypePhp\Build\NanoBuildBackend;
-use TypePhp\Build\NativeDependencyAuditor;
 use TypePhp\Build\NanoSourceComposer;
+use TypePhp\Build\NativeBuilder;
+use TypePhp\Build\NativeCommandOptionsTrait;
+use TypePhp\Build\NativeDependencyAuditor;
+use TypePhp\Build\PhpSourceExtensionIndex;
 use TypePhp\Build\PrecompiledHeaderManager;
+use TypePhp\Build\ResourceCompilationTrait;
+use TypePhp\Build\SapiApplicationLinker;
+use TypePhp\Build\SapiBuildConfiguration;
+use TypePhp\Build\SourceCompileQueue;
 use TypePhp\Build\SourcePipelineTrait;
 use TypePhp\Build\TranslationUnitSplitTrait;
-use TypePhp\Build\SourceCompileQueue;
 use TypePhp\Build\WasmInterfaceGenerator;
 use TypePhp\Config\ProjectYamlLoader;
 use TypePhp\Diagnostics\CompileTimeAttributeDiagnostic;
-use TypePhp\Build\ResourceCompilationTrait;
 use TypePhp\Entity\ArgInfo;
 use TypePhp\Entity\ClassDef;
 use TypePhp\Entity\ClassLikeDef;
@@ -51,27 +61,21 @@ use TypePhp\Generator\DefaultArgumentGenerator;
 use TypePhp\Generator\LibraryImportStubGenerator;
 use TypePhp\Generator\Symbol;
 use TypePhp\Metadata\Constants;
-use TypePhp\Platform\PlatformFactory;
-use TypePhp\Platform\Ios;
 use TypePhp\Platform\Android;
+use TypePhp\Platform\Ios;
+use TypePhp\Platform\PlatformFactory;
 use TypePhp\Platform\Wasi;
 use TypePhp\Platform\Windows;
-use TypePhp\Resolver\Reflection;
 use TypePhp\Resolver\ClassConstantValueTrait;
-use TypePhp\Transform\Visitor;
-use TypePhp\Transform\ConstructorLowering;
+use TypePhp\Resolver\Reflection;
 use TypePhp\Transform\ConstantExpressionValidationVisitor;
+use TypePhp\Transform\ConstructorLowering;
+use TypePhp\Transform\NanoSyntaxValidationVisitor;
 use TypePhp\Transform\PropertyHookLowering;
 use TypePhp\Transform\RuntimeAttributeFactoryLowering;
-use TypePhp\Transform\NanoSyntaxValidationVisitor;
+use TypePhp\Transform\Visitor;
 use TypePhp\Transform\VoidCastValidationVisitor;
-use PhpParser\Modifiers;
-use PhpParser\Node;
-use PhpParser\Node\Expr;
-use PhpParser\NodeAbstract;
-use PhpParser\NodeTraverser;
-use PhpParser\NodeVisitor\NameResolver;
-use PhpParser\NodeVisitor\CloningVisitor;
+
 use function TypePhp\StubGenerator\generateStubFile;
 
 class Translator extends Preprocessor
@@ -91,8 +95,8 @@ class Translator extends Preprocessor
 
     public const string VERSION = '0.9.2';
     public const string APP_NAME = 'TypePHP Compiler (AOT)';
-
     protected bool $hasExplicitOutput = false;
+
     /** Exact output stem; generated C/C++ identifiers still use targetName. */
     protected ?string $explicitOutputBasename = null;
     protected ?string $explicitOutputExtension = null;
@@ -114,7 +118,6 @@ class Translator extends Preprocessor
 
     /** @var list<string> Forward declarations for split request-lifecycle helpers. */
     private array $classArrayConstantLifecycleDeclarations = [];
-
     private bool $classArrayConstantLifecycleSplit = false;
 
     // Windows resource file configuration (icon, version info, etc.)
@@ -143,6 +146,7 @@ class Translator extends Preprocessor
         'typephp_fiber_generator.h',
         'phpx_std.h',
     ];
+
     /**
      * @var array<string>
      */
@@ -194,7 +198,6 @@ class Translator extends Preprocessor
             exit(0);
         }
 
-
         // Detect the OS, the compiler, and (on Windows) the PHP lib files.
         $this->detectPlatform();
         self::$instance = $this;
@@ -287,7 +290,7 @@ class Translator extends Preprocessor
                 $this->platform = new Windows(
                     phpLibs: [$this->windowsPhpCoreLib, $this->windowsPhpEmbedLib],
                     isZts: $this->isPhpZts,
-                    phpSdkPath: $this->getPhpDir() . '\\SDK'
+                    phpSdkPath: $this->getPhpDir() . '\SDK'
                 );
             }
 
@@ -337,7 +340,7 @@ class Translator extends Preprocessor
             if (!CompilerFactory::supportsTarget($explicit, $target)) {
                 $this->error(
                     "--full-static requires a clang that can target {$target}, but {$explicit} cannot.\n"
-                    . "  Pass a native clang, for example: --compiler=/usr/bin/clang"
+                    . '  Pass a native clang, for example: --compiler=/usr/bin/clang'
                 );
             }
             return $explicit;
@@ -351,7 +354,7 @@ class Translator extends Preprocessor
 
         $this->error(
             "--full-static requires a clang that can target {$target}; none was found.\n"
-            . "  Install clang, or pass it explicitly, for example: --compiler=/usr/bin/clang"
+            . '  Install clang, or pass it explicitly, for example: --compiler=/usr/bin/clang'
         );
     }
 
@@ -427,6 +430,7 @@ class Translator extends Preprocessor
             ['-o, --output <file>', 'Output name or path (default: input basename)'],
             ['-f, --force', 'Clear incremental caches and force a full rebuild'],
             ['-m, --mode <mode>', 'Build mode: bin, lib, or ext (default: bin)'],
+            ['--sapi <target>', 'Build a self-contained PHP CLI, FPM, or both'],
             ['-r, --run', 'Run the compiled binary after a successful build'],
             ['-j, --job <num>', 'Number of parallel compilation jobs (default: 4)'],
             ['--cxx-std <ver>', 'C++ standard version (default: c++17)'],
@@ -489,6 +493,9 @@ class Translator extends Preprocessor
         if ($this->climate->arguments->defined('mode')) {
             $this->setBuildMode($this->climate->arguments->get('mode'));
         }
+        if ($this->climate->arguments->defined('sapi')) {
+            $this->configureSapiTargets((string) $this->climate->arguments->get('sapi'));
+        }
 
         // --full-static links the whole musl C runtime into the artifact, so it
         // only makes sense for a self-contained executable. A shared object
@@ -874,14 +881,18 @@ class Translator extends Preprocessor
             'binary', 'cli' => self::BUILD_MODE_BIN,
             'extension' => self::BUILD_MODE_EXT,
             'library', 'shared', 'dll', 'dylib', 'so' => self::BUILD_MODE_LIB,
+            'sapi' => self::BUILD_MODE_SAPI,
             default => $mode,
         };
 
-        if (!in_array($mode, [self::BUILD_MODE_BIN, self::BUILD_MODE_EXT, self::BUILD_MODE_LIB], true)) {
-            $this->error("Invalid build mode `{$mode}`. Expected bin, lib, or ext.");
+        if (!in_array($mode, [self::BUILD_MODE_BIN, self::BUILD_MODE_EXT, self::BUILD_MODE_LIB, self::BUILD_MODE_SAPI], true)) {
+            $this->error("Invalid build mode `{$mode}`. Expected bin, lib, ext, or sapi.");
         }
 
         $this->buildMode = $mode;
+        if ($mode === self::BUILD_MODE_SAPI && $this->sapiTargets === []) {
+            $this->sapiTargets = ['cli'];
+        }
     }
 
     public function setTargetName(string $name): void
@@ -948,6 +959,21 @@ class Translator extends Preprocessor
         return $targetFile;
     }
 
+    /** @return array<string, string> */
+    public function getSapiOutputFiles(): array
+    {
+        $base = $this->explicitOutputBasename ?? $this->targetName;
+        $extension = $this->explicitOutputExtension ?? '';
+        $directory = $this->outputDir === '' ? '' : rtrim($this->outputDir, '/\\') . '/';
+        $multipleTargets = count($this->sapiTargets) > 1;
+        $outputs = [];
+        foreach ($this->sapiTargets as $target) {
+            $suffix = $multipleTargets ? '-' . $target : '';
+            $outputs[$target] = $directory . $base . $suffix . $extension;
+        }
+        return $outputs;
+    }
+
     public function getLibraryImportStubFile(): string
     {
         $directory = $this->outputDir !== '' ? $this->outputDir : (getcwd() ?: $this->rootPath);
@@ -997,8 +1023,7 @@ class Translator extends Preprocessor
         ?string $sourceFile = null,
         bool $commonOnly = false,
         bool $includeGlobals = true,
-    ): string
-    {
+    ): string {
         $includeCommon = $sourceFile === null;
         $projectNamespace = $this->getProjectNamespace();
         $lines[] = '#include <phpx.h>';
@@ -1125,9 +1150,7 @@ class Translator extends Preprocessor
 
         $entry = $this->getFunction(self::ENTRY_FUNCTION);
         if (count($entry->argInfoList) !== 0 && count($entry->argInfoList) !== 2) {
-            throw new \RuntimeException(
-                'Nano main() accepts either no parameters or (int $argc, array $argv)'
-            );
+            throw new \RuntimeException('Nano main() accepts either no parameters or (int $argc, array $argv)');
         }
         if (!in_array($entry->returnType, [Type::INT, Type::VOID], true)) {
             throw new \RuntimeException('Nano main() must return int or void');
@@ -1151,6 +1174,48 @@ class Translator extends Preprocessor
         return $file;
     }
 
+    public function genSapiInternalFunctions(): string
+    {
+        if (!$this->isSapiBuild() || $this->sapiPhpBuildDirectory === null) {
+            throw new \LogicException('SAPI internal module generation requires a prepared PHP build');
+        }
+        $source = $this->sapiPhpBuildDirectory . '/main/internal_functions_cli.c';
+        $code = is_file($source) ? file_get_contents($source) : false;
+        if (!is_string($code)) {
+            throw new \RuntimeException("Private PHP build did not generate {$source}");
+        }
+
+        $table = 'static zend_module_entry * const php_builtin_extensions[] = {';
+        if (substr_count($code, $table) !== 1) {
+            throw new \RuntimeException('Cannot locate PHP built-in extension table in ' . $source);
+        }
+        $modulePointer = $this->getSapiModulePointerName();
+        $code = str_replace(
+            $table,
+            'extern zend_module_entry *' . $modulePointer . ';' . PHP_EOL . PHP_EOL . $table,
+            $code,
+        );
+        $registration = 'return php_register_extensions(php_builtin_extensions, EXTCOUNT);';
+        $replacement = 'if (php_register_extensions(php_builtin_extensions, EXTCOUNT) != SUCCESS) {' . PHP_EOL
+            . "\t\treturn FAILURE;" . PHP_EOL
+            . "\t}" . PHP_EOL
+            . "\treturn zend_register_internal_module({$modulePointer}) == NULL ? FAILURE : SUCCESS;";
+        if (substr_count($code, $registration) !== 1) {
+            throw new \RuntimeException('Cannot adapt PHP internal extension registration in ' . $source);
+        }
+        $code = str_replace($registration, $replacement, $code);
+
+        $output = $this->getBuildDir() . '/sapi-internal-functions-' . $this->targetName . '.c';
+        $this->writeFile($output, $code);
+        $this->generatedProjectSources[$output] = true;
+        return $output;
+    }
+
+    private function getSapiModulePointerName(): string
+    {
+        return 'typephp_sapi_module_' . $this->getModuleName();
+    }
+
     /** @return array{declarations: string, registration: string} */
     private function genTraitMetadataCode(): array
     {
@@ -1237,7 +1302,9 @@ class Translator extends Preprocessor
         // Keep <new> out of the shared PCH dependency set used by every source.
         $code .= '#include <new>' . PHP_EOL;
 
-        if ($this->isBuildModeEmbed() && !$this->isNanoMode()) {
+        if ($this->isSapiBuild()) {
+            $code .= '#include <typephp_opcode_table.h>' . PHP_EOL;
+        } elseif ($this->isBuildModeEmbed() && !$this->isNanoMode()) {
             $code .= '#include <typephp_runtime.h>' . PHP_EOL;
             if ($this->embeddedFiles === [] && $this->embeddedOpcodeFiles === []) {
                 // The runtime still calls these hooks; keep empty builds in this translation unit.
@@ -1537,6 +1604,12 @@ CODE;
         if (!$this->isWasiTarget() && !$this->isNanoMode()) {
             $code .= 'typephp_register_fiber_generator_class();' . PHP_EOL;
         }
+        if ($this->isSapiBuild()) {
+            // Install the process-wide compile hook only after every fallible
+            // MINIT step has succeeded, so a failed module startup cannot
+            // leave zend_compile_file pointing at TypePHP code.
+            $code .= 'typephp_opcode_table_startup();' . PHP_EOL;
+        }
 
         // The register_class_*() calls below install the persistent AST
         // constants. Their release runs in MSHUTDOWN, and Zend only calls
@@ -1550,13 +1623,7 @@ CODE;
             $registrationCode .= $registerSymbolFn . '(module_number);' . PHP_EOL;
         }
         if ($releaseAstConstantFns !== [] && str_contains($registrationCode, 'return FAILURE')) {
-            throw new \LogicException(
-                'MINIT must not fail after class registration begins: a FAILURE return would'
-                . ' leave persistent enum-case AST constants in the class table with no'
-                . ' MSHUTDOWN guaranteed to release them before destroy_zend_class().'
-                . ' Move the fallible step before the first register_class_*() call, or'
-                . ' release the AST constants on its failure path.'
-            );
+            throw new \LogicException('MINIT must not fail after class registration begins: a FAILURE return would leave persistent enum-case AST constants in the class table with no MSHUTDOWN guaranteed to release them before destroy_zend_class(). Move the fallible step before the first register_class_*() call, or release the AST constants on its failure path.');
         }
         $code .= $registrationCode;
         $code .= 'return SUCCESS;' . PHP_EOL;
@@ -1588,6 +1655,9 @@ CODE;
             $code .= 'typephp_unregister_trait_metadata(module_number);' . PHP_EOL;
         }
         $code .= 'typephp_uninstall_reflection_attribute_handlers();' . PHP_EOL;
+        if ($this->isSapiBuild()) {
+            $code .= 'typephp_opcode_table_shutdown();' . PHP_EOL;
+        }
         $code .= 'return SUCCESS;' . PHP_EOL;
         $code .= '}' . PHP_EOL . PHP_EOL;
 
@@ -1765,6 +1835,10 @@ CODE;
             }
         }
 
+        if ($this->isSapiBuild()) {
+            // The request wrapper has no fallible initialization after it.
+            $code .= 'typephp_opcode_table_request_startup();' . PHP_EOL;
+        }
         $code .= 'return SUCCESS;' . PHP_EOL;
         $code .= '}' . PHP_EOL . PHP_EOL;
         // rinit end
@@ -1775,6 +1849,11 @@ PHP_RSHUTDOWN_FUNCTION({$moduleName}) {
     delete php_request_cache;
     php_request_cache = nullptr;
     module_clean();
+CODE;
+        if ($this->isSapiBuild()) {
+            $code .= '    typephp_opcode_table_request_shutdown();' . PHP_EOL;
+        }
+        $code .= <<<'CODE'
     return SUCCESS;
 }
 CODE;
@@ -1831,6 +1910,10 @@ CODE;
         if ($this->isBuildModeExt()) {
             $code .= "ZEND_GET_MODULE({$moduleName});\n";
             $code .= '}  // namespace ' . $projectNamespace . PHP_EOL;
+        } elseif ($this->isBuildModeSapi()) {
+            $code .= '}  // namespace ' . $projectNamespace . PHP_EOL . PHP_EOL;
+            $code .= 'extern "C" zend_module_entry *' . $this->getSapiModulePointerName()
+                . ' = &' . $projectNamespace . '::' . $moduleName . '_module_entry;' . PHP_EOL;
         } elseif ($this->isBuildModeEmbed() && !$this->isNanoMode()) {
             $code .= '}  // namespace ' . $projectNamespace . PHP_EOL . PHP_EOL;
             $code .= 'TYPEPHP_EMBED_GET_MODULE_FUNCTION(' . $this->targetName . ') {' . PHP_EOL;
@@ -1861,19 +1944,22 @@ CODE;
     {
         $dependencies = $this->extensionDependencies;
         $seen = [];
+        $sourceIndex = $this->isSapiBuild() && $this->sapiPhpSourceDirectory !== null
+            ? PhpSourceExtensionIndex::forSource($this->sapiPhpSourceDirectory)
+            : null;
         foreach ($dependencies as $dependency) {
             $seen[strtolower($dependency)] = true;
         }
 
         foreach (array_keys($this->compilationStatistics->get(CompilationStatistics::FUNCTIONS)) as $function) {
             $reflection = Reflection::getFunction(ltrim($function, '\\'));
-            if ($reflection === null || !$reflection->isInternal()) {
-                continue;
-            }
+            $extension = $reflection !== null && $reflection->isInternal()
+                ? $reflection->getExtensionName()
+                : $sourceIndex?->functionExtension($function);
             $this->appendExtensionDependency(
                 $dependencies,
                 $seen,
-                $reflection->getExtensionName(),
+                $extension,
             );
         }
 
@@ -1884,13 +1970,13 @@ CODE;
         ksort($classes, SORT_STRING);
         foreach (array_keys($classes) as $class) {
             $reflection = Reflection::getClass(ltrim($class, '\\'));
-            if ($reflection === null || !$reflection->isInternal()) {
-                continue;
-            }
+            $extension = $reflection !== null && $reflection->isInternal()
+                ? $reflection->getExtensionName()
+                : $sourceIndex?->classExtension($class);
             $this->appendExtensionDependency(
                 $dependencies,
                 $seen,
-                $reflection->getExtensionName(),
+                $extension,
             );
         }
 
@@ -2020,8 +2106,8 @@ CODE;
         }
         return hash_final($context);
     }
-
     private bool $memoizeGeneratedCompileInputs = false;
+
     /** @var array<string, array{digest: string, headers: array}> */
     private array $generatedCompileInputCache = [];
 
@@ -2193,13 +2279,13 @@ CODE;
     }
 
     /**
-     * @return null|array{
+     * @return array{
      *     language: ?string,
      *     options: CompileOptions,
      *     cacheable_misc: bool,
      *     nano_runtime: bool,
      *     generated_project: bool
-     * }
+     * }|null
      */
     private function prepareCompileFileTask(
         string $cppFile,
@@ -2324,16 +2410,23 @@ CODE;
     private function getEmbeddedRuntimeSources(): array
     {
         $sources = [];
-        $runtimeSource = $this->getPhpxDir() . '/src/misc/typephp_runtime.cc';
-        // PHPX 2.6.3 keeps the common runtime in typephp_main.cc. Newer PHPX
-        // versions split it out so the object can be shared across projects.
-        if (is_file($runtimeSource)) {
-            $sources[] = $runtimeSource;
-        }
-        $sources[] = $this->getPhpxDir() . '/src/misc/typephp_main.cc';
-        if ($this->embeddedFiles !== [] || $this->embeddedOpcodeFiles !== []) {
+        if (!$this->isSapiBuild()) {
+            $runtimeSource = $this->getPhpxDir() . '/src/misc/typephp_runtime.cc';
+            // PHPX 2.6.3 keeps the common runtime in typephp_main.cc. Newer PHPX
+            // versions split it out so the object can be shared across projects.
+            if (is_file($runtimeSource)) {
+                $sources[] = $runtimeSource;
+            }
+            $sources[] = $this->getPhpxDir() . '/src/misc/typephp_main.cc';
+        }
+        if ($this->isSapiBuild() || $this->embeddedFiles !== [] || $this->embeddedOpcodeFiles !== []) {
             $sources[] = $this->getPhpxDir() . '/src/misc/typephp_opcode_table.cc';
-            $sources[] = $this->getEmbeddedOpcodeDecoderSource();
+            if ($this->isSapiBuild()) {
+                $sources[] = $this->getPhpxDir() . '/src/misc/typephp_sapi.cc';
+            }
+            if ($this->embeddedOpcodeFiles !== []) {
+                $sources[] = $this->getEmbeddedOpcodeDecoderSource();
+            }
         }
         return $sources;
     }
@@ -2344,9 +2437,7 @@ CODE;
         // Distribution PHP headers need not live under the PHP prefix.
         $this->getOpcodeBuildExtensionArgs();
         if (!preg_match('/^8\.(4|5)\./', $this->opcodeBuildPhpVersion, $versionMatch)) {
-            throw new \RuntimeException(
-                "Unsupported opcode decoder PHP version: {$this->opcodeBuildPhpVersion}",
-            );
+            throw new \RuntimeException("Unsupported opcode decoder PHP version: {$this->opcodeBuildPhpVersion}");
         }
         return $this->getPhpxDir() . '/thirdparty/opcache/opcode_unserialize_8'
             . $versionMatch[1] . '.c';
@@ -2540,7 +2631,8 @@ CODE;
             $progress = new Progressbar();
             $progress->barStyle([AnsiTerminal::FG_GREEN])
                 ->percentageStyle([AnsiTerminal::TEXT_BOLD])
-                ->labelStyle([AnsiTerminal::FG_CYAN]);
+                ->labelStyle([AnsiTerminal::FG_CYAN])
+            ;
             $progress->renderInPlace(0, $totalFiles, 'Compiling');
         }
 
@@ -2695,6 +2787,30 @@ CODE;
 
     public function build(array $objectFiles): string
     {
+        if ($this->isSapiBuild()) {
+            if ($this->sapiPhpSourceDirectory === null
+                || $this->sapiPhpBuildDirectory === null
+                || $this->sapiPhpxArchive === null
+                || $this->sapiRuntimeArchives === []) {
+                throw new \LogicException('SAPI runtime was not prepared before linking');
+            }
+            try {
+                $target = (new SapiApplicationLinker(
+                    $this->sapiPhpSourceDirectory,
+                    $this->sapiPhpBuildDirectory,
+                    $this->sapiPhpxArchive,
+                    $this->sapiRuntimeArchives,
+                    $this->getBuildDir(),
+                    $this->sapiTargets,
+                    $this->sapiEntryFile,
+                    fn (string $message) => $this->output($message, 'lightBlue'),
+                ))->link($objectFiles, $this->getSapiOutputFiles());
+            } catch (\Throwable $exception) {
+                $this->error('SAPI link failed: ' . $exception->getMessage());
+            }
+            $this->climate->green('Build successful: ' . $target);
+            return $target;
+        }
         $targetFile = $this->getTargetFileName();
 
         // Windows: add the .res resource file to the link
@@ -2782,10 +2898,7 @@ CODE;
         fclose($pipes[2]);
         $status = proc_close($process);
         if ($status !== 0) {
-            throw new \RuntimeException(
-                "Nano audit command failed with status {$status}"
-                . ($stderr === '' ? '' : ": {$stderr}"),
-            );
+            throw new \RuntimeException("Nano audit command failed with status {$status}" . ($stderr === '' ? '' : ": {$stderr}"));
         }
         return (string) $stdout;
     }
@@ -2807,7 +2920,11 @@ CODE;
 
     public function run(string $targetFile): never
     {
-        if ($this->buildMode !== self::BUILD_MODE_BIN) {
+        if ($this->isSapiBuild() && !in_array('cli', $this->sapiTargets, true)) {
+            $this->climate->error('--run requires the CLI target in SAPI mode');
+            exit(1);
+        }
+        if ($this->buildMode !== self::BUILD_MODE_BIN && !$this->isSapiBuild()) {
             $this->climate->error('--run is only supported in binary mode (-m bin), not library or extension mode');
             exit(1);
         }
@@ -3127,8 +3244,7 @@ CODE;
         string $asyncExportsFile,
         string $package,
         string $world,
-    ): void
-    {
+    ): void {
         if (!$this->isWasiTarget() || !$this->isBuildModeLib()) {
             $this->error('WIT interfaces can only be generated for a WASI library build');
         }
@@ -3203,10 +3319,7 @@ CODE;
     {
         $globalHeaders = $this->getGeneratedSourceGlobalHeaders();
         if ($this->declarationHeaderFiles === []) {
-            $declarationHeaders = [
-                "php_{$this->targetName}_func_decl.h",
-                "php_{$this->targetName}_data_decl.h",
-            ];
+            $declarationHeaders = [$this->getRuntimeDeclarationHeaderName()];
         } elseif ($allDeclarations) {
             $declarationHeaders = [
                 $this->getRuntimeDeclarationHeaderName(),
@@ -3256,10 +3369,7 @@ CODE;
     private function genExtensionIncludeHeaderFiles(): string
     {
         if ($this->declarationHeaderFiles === []) {
-            $declarationHeaders = [
-                "php_{$this->targetName}_func_decl.h",
-                "php_{$this->targetName}_data_decl.h",
-            ];
+            $declarationHeaders = [$this->getRuntimeDeclarationHeaderName()];
         } else {
             $declarationHeaders = [$this->getRuntimeDeclarationHeaderName()];
             // The callbacks emitted here bridge stub declarations to native
@@ -3780,7 +3890,7 @@ CODE;
     {
         $header = $this->declarationHeaderFiles[$sourceFile]
             ?? basename($this->getDeclarationHeaderFile($sourceFile));
-        $stem = preg_replace('/_decl\\.h$/', '', basename($header)) ?: pathinfo($header, PATHINFO_FILENAME);
+        $stem = preg_replace('/_decl\.h$/', '', basename($header)) ?: pathinfo($header, PATHINFO_FILENAME);
         return $this->getBuildDir() . '/init/' . $stem . '_class_constants.cc';
     }
 
@@ -3836,8 +3946,8 @@ CODE;
                     if (!$classDef instanceof ClassDef || !$classDef->nativeObject) {
                         $classNameStr = $this->genCharPtr($classDef->getNamespacedName(false), true);
                         $classConstStr = $this->genCharPtr($constant->name);
-                        $init .= "php::updateConstant($classNameStr, $classConstStr, {$constant->value});\n";
-                        $clean .= "php::updateConstant($classNameStr, $classConstStr, php::null);\n";
+                        $init .= "php::updateConstant({$classNameStr}, {$classConstStr}, {$constant->value});\n";
+                        $clean .= "php::updateConstant({$classNameStr}, {$classConstStr}, php::null);\n";
                     }
                     $init .= "} while(0);\n";
                     $operations[] = [
@@ -3877,8 +3987,8 @@ CODE;
                             'key' => 'inherited:' . $classDef->getNamespacedName(false) . ':'
                                 . $constant->name . ':' . $parentDef->getNamespacedName(false),
                             'dependencies' => [$parentDef->sourceFile],
-                            'init' => "php::updateConstant($classNameStr, $classConstStr, {$constName});\n",
-                            'clean' => "php::updateConstant($classNameStr, $classConstStr, php::null);\n",
+                            'init' => "php::updateConstant({$classNameStr}, {$classConstStr}, {$constName});\n",
+                            'clean' => "php::updateConstant({$classNameStr}, {$classConstStr}, php::null);\n",
                         ];
                     }
                 }
@@ -3901,8 +4011,8 @@ CODE;
                             'key' => 'interface:' . $classDef->getNamespacedName(false) . ':'
                                 . $constant->name . ':' . $interfaceDef->getNamespacedName(false),
                             'dependencies' => [$interfaceDef->sourceFile],
-                            'init' => "php::updateConstant($classNameStr, $classConstStr, {$constName});\n",
-                            'clean' => "php::updateConstant($classNameStr, $classConstStr, php::null);\n",
+                            'init' => "php::updateConstant({$classNameStr}, {$classConstStr}, {$constName});\n",
+                            'clean' => "php::updateConstant({$classNameStr}, {$classConstStr}, php::null);\n",
                         ];
                     }
                 }
@@ -3988,7 +4098,7 @@ CODE;
             && (
                 $path[0] === '/'
                 || $path[0] === '\\'
-                || preg_match('/^[A-Za-z]:[\\\\\\/]/', $path) === 1
+                || preg_match('/^[A-Za-z]:[\\\\\/]/', $path) === 1
             );
     }
 
@@ -4048,6 +4158,23 @@ CODE;
         if (array_key_exists('php-version', $cfg) && !$this->climate->arguments->defined('php-version')) {
             $this->setPhpVersion((string) $cfg['php-version']);
         }
+        if (array_key_exists('sapi', $cfg) && !$this->climate->arguments->defined('sapi')) {
+            $this->configureSapiTargets($cfg['sapi']);
+        }
+        if (array_key_exists('entry', $cfg)) {
+            if (!is_string($cfg['entry']) || trim($cfg['entry']) === '') {
+                $this->error('`entry` must be a non-empty PHP file path');
+            }
+            $entryPath = $this->resolvePath($cfg['entry'], $projectDir, 'Entry path');
+            $entry = realpath($entryPath);
+            if ($entry === false || !is_file($entry)) {
+                $this->error('Entry file does not exist: `' . $cfg['entry'] . '`');
+            }
+            if (!FileScanner::isPhpFile($entry) || str_ends_with($entry, '.stub.php')) {
+                $this->error('`entry` must select an executable PHP file');
+            }
+            $this->sapiEntryFile = $entry;
+        }
 
         if (!empty($cfg['sources'])) {
             $sources = $cfg['sources'];
@@ -4111,22 +4238,25 @@ CODE;
                     }
                 }
             }
-            $this->embeddedFiles = array_values(array_unique($this->embeddedFiles));
-            sort($this->embeddedFiles, SORT_STRING);
-            $this->embeddedPhpFiles = array_values(array_filter(
-                $this->embeddedFiles,
-                // PHP extension stubs are API declarations for code generators.
-                // They remain in the raw archive but must never be executed.
-                static fn(string $file): bool => FileScanner::isPhpFile($file)
-                    && !str_ends_with($file, '.stub.php'),
-            ));
-            if ($this->embeddedFiles !== []) {
-                $this->output(
-                    'embedded-files: found ' . count($this->embeddedFiles)
-                    . ' files (' . count($this->embeddedPhpFiles) . ' PHP)',
-                    'lightBlue',
-                );
-            }
+        }
+        if ($this->sapiEntryFile !== null) {
+            $this->embeddedFiles[] = $this->sapiEntryFile;
+        }
+        $this->embeddedFiles = array_values(array_unique($this->embeddedFiles));
+        sort($this->embeddedFiles, SORT_STRING);
+        $this->embeddedPhpFiles = array_values(array_filter(
+            $this->embeddedFiles,
+            // PHP extension stubs are API declarations for code generators.
+            // They remain in the raw archive but must never be executed.
+            static fn (string $file): bool => FileScanner::isPhpFile($file)
+                && !str_ends_with($file, '.stub.php'),
+        ));
+        if ($this->embeddedFiles !== []) {
+            $this->output(
+                'embedded-files: found ' . count($this->embeddedFiles)
+                . ' files (' . count($this->embeddedPhpFiles) . ' PHP)',
+                'lightBlue',
+            );
         }
 
         if (array_key_exists('optimize', $cfg)) {
@@ -4273,7 +4403,7 @@ CODE;
         $linkLibs = $cfg['link-libs'] ?? null;
         if (!empty($linkLibs) && is_array($linkLibs)) {
             foreach ($linkLibs as $lib) {
-                $this->linkLibs[] = (string)$lib;
+                $this->linkLibs[] = (string) $lib;
             }
         }
 
@@ -4330,7 +4460,11 @@ CODE;
         // Read mode/type/build-mode (supports both the CLI and YAML naming)
         $buildMode = $cfg['mode'] ?? $cfg['build-mode'] ?? $cfg['type'] ?? null;
         if (!empty($buildMode)) {
-            $this->setBuildMode((string) $buildMode);
+            $normalizedMode = strtolower(trim((string) $buildMode));
+            if ($this->isSapiBuild() && $normalizedMode !== self::BUILD_MODE_SAPI) {
+                $this->error('`sapi` is an independent build mode and cannot be combined with `mode`');
+            }
+            $this->setBuildMode($normalizedMode);
         }
 
         // Read ignore (supports both hyphen and underscore)
@@ -4371,7 +4505,7 @@ CODE;
             // Verify that the icon file exists
             if (!empty($resource['icon'])) {
                 $iconPath = $resource['icon'];
-                if (!preg_match('/^[A-Za-z]:\\|^\//', $iconPath)) {
+                if (!preg_match('/^[A-Za-z]:\|^\//', $iconPath)) {
                     $iconPath = $projectDir . DIRECTORY_SEPARATOR . $iconPath;
                 }
                 if (!file_exists($iconPath)) {
@@ -4389,7 +4523,7 @@ CODE;
                 $this->error('`manifest` must be a string (path to manifest file)');
             }
             $manifestPath = $manifest;
-            if (!preg_match('/^[A-Za-z]:\\|^\//', $manifestPath)) {
+            if (!preg_match('/^[A-Za-z]:\|^\//', $manifestPath)) {
                 $manifestPath = $projectDir . DIRECTORY_SEPARATOR . $manifestPath;
             }
             if (!file_exists($manifestPath)) {
@@ -4401,7 +4535,23 @@ CODE;
             $this->resourceConfig['manifest'] = $manifest;
         }
 
-        return $this->filterIgnoredFiles($list);
+        $list = $this->filterIgnoredFiles($list);
+        if ($this->sapiEntryFile !== null) {
+            $list = array_values(array_diff($list, [$this->sapiEntryFile]));
+        }
+        return $list;
+    }
+
+    private function configureSapiTargets(string|array $value): void
+    {
+        try {
+            $this->sapiTargets = SapiBuildConfiguration::parseTargets($value);
+        } catch (\InvalidArgumentException $exception) {
+            $this->error($exception->getMessage());
+        }
+        // The SAPI executable owns main(). Generated TypePHP code is linked as
+        // an internal Zend module and therefore has no dynamic get_module().
+        $this->buildMode = self::BUILD_MODE_SAPI;
     }
 
     /** @return list<string> */
@@ -4440,7 +4590,7 @@ CODE;
 
     protected function getProjectYamlLoader(): ProjectYamlLoader
     {
-        $this->projectYamlLoader ??= new ProjectYamlLoader($this->phpVersion, fn(string $message): never => $this->error($message));
+        $this->projectYamlLoader ??= new ProjectYamlLoader($this->phpVersion, fn (string $message): never => $this->error($message));
         $this->projectYamlLoader->setPhpVersion($this->phpVersion);
         return $this->projectYamlLoader;
     }
@@ -4729,7 +4879,7 @@ CODE;
         if (!is_string($headerCode)) {
             throw new \RuntimeException('Cannot read generated arginfo header: ' . $headerFile);
         }
-        if (preg_match('/\\bstatic\\s+void\\s+(typephp_release_ast_constants_[A-Za-z0-9_]+)\\s*\\(void\\)/', $headerCode, $releaseMatch)) {
+        if (preg_match('/\bstatic\s+void\s+(typephp_release_ast_constants_[A-Za-z0-9_]+)\s*\(void\)/', $headerCode, $releaseMatch)) {
             $this->releaseAstConstantFns[] = $releaseMatch[1];
         }
         $needsAttributeSymbols = str_contains($headerCode, 'zend_add_function_attribute(')
@@ -4967,9 +5117,9 @@ CODE;
                                     self::TRAIT_ORIGIN_ATTRIBUTE,
                                     $traitFullName,
                                 );
-                                if ($existingConstStmt->flags !== $traitStmt->flags ||
-                                    $this->typeNodeToStringOrNull($existingConstStmt->type) !== $this->typeNodeToStringOrNull($traitStmt->type) ||
-                                    !$this->traitMemberExpressionsAreIdentical(
+                                if ($existingConstStmt->flags !== $traitStmt->flags
+                                    || $this->typeNodeToStringOrNull($existingConstStmt->type) !== $this->typeNodeToStringOrNull($traitStmt->type)
+                                    || !$this->traitMemberExpressionsAreIdentical(
                                         $existingConst->value,
                                         $existingOrigin,
                                         $const->value,
@@ -5007,9 +5157,9 @@ CODE;
                                     self::TRAIT_ORIGIN_ATTRIBUTE,
                                     $traitFullName,
                                 );
-                                if ($existingPropStmt->flags !== $traitStmt->flags ||
-                                    $this->typeNodeToStringOrNull($existingPropStmt->type) !== $this->typeNodeToStringOrNull($traitStmt->type) ||
-                                    !$this->traitMemberExpressionsAreIdentical(
+                                if ($existingPropStmt->flags !== $traitStmt->flags
+                                    || $this->typeNodeToStringOrNull($existingPropStmt->type) !== $this->typeNodeToStringOrNull($traitStmt->type)
+                                    || !$this->traitMemberExpressionsAreIdentical(
                                         $existingProp->default,
                                         $existingOrigin,
                                         $prop->default,
@@ -5155,9 +5305,9 @@ CODE;
     }
 
     private function traitMemberExpressionsAreIdentical(
-        ?Node\Expr $left,
+        ?Expr $left,
         string $leftOrigin,
-        ?Node\Expr $right,
+        ?Expr $right,
         string $rightOrigin,
         ClassDef $usingClass,
         ?string $declaredType,
@@ -5186,7 +5336,7 @@ CODE;
     }
 
     private function evaluateTraitMemberExpression(
-        Node\Expr $expression,
+        Expr $expression,
         string $origin,
         ClassDef $usingClass,
     ): mixed {
@@ -5195,7 +5345,7 @@ CODE;
             if ($scope->trait !== null) {
                 return $this->withTraitNameContext(
                     $origin,
-                    fn(): mixed => $this->evaluateCompileTimeExpression($expression, $scope, $usingClass),
+                    fn (): mixed => $this->evaluateCompileTimeExpression($expression, $scope, $usingClass),
                 );
             }
         }
@@ -5502,7 +5652,7 @@ CODE;
     private function reresolveTraitMethodAstLateBoundTypes(
         ClassDef $usingClassDef,
         string $traitFullName,
-        Node\Stmt\ClassMethod $methodStmt
+        Node\Stmt\ClassMethod $methodStmt,
     ): void {
         if (!$this->hasClass($traitFullName)) {
             return;
@@ -5632,7 +5782,7 @@ CODE;
         string $traitB,
         string $methodName,
         Node\Stmt\ClassMethod $a,
-        Node\Stmt\ClassMethod $b
+        Node\Stmt\ClassMethod $b,
     ): void {
         // Compare visibility
         if ($a->flags !== $b->flags) {
@@ -5800,7 +5950,7 @@ CODE;
         bool $abstract,
     ): void {
         $attributeTarget = $constructor->getAttribute(
-            \TypePhp\Diagnostics\CompileTimeAttributeDiagnostic::GENERATED_TARGET,
+            CompileTimeAttributeDiagnostic::GENERATED_TARGET,
             $constructor,
         );
         if (!$attributeTarget instanceof Node) {
@@ -5830,7 +5980,7 @@ CODE;
             return;
         }
 
-        array_unshift($constructor->stmts, new Node\Stmt\Expression(new Node\Expr\StaticCall(
+        array_unshift($constructor->stmts, new Node\Stmt\Expression(new Expr\StaticCall(
             new Node\Name('parent'),
             new Node\Identifier('__construct'),
         )));
@@ -5851,9 +6001,9 @@ CODE;
         }
 
         if ($class instanceof Node\Stmt\Class_ && $this->classDef->printerGenerated) {
-            $available = [...$this->parentPublicProperties($this->classDef->extends), ...\TypePhp\Transform\ClassFieldSelection::ownPublicProperties($class)];
+            $available = [...$this->parentPublicProperties($this->classDef->extends), ...Transform\ClassFieldSelection::ownPublicProperties($class)];
             try {
-                $properties = \TypePhp\Transform\ClassFieldSelection::resolve(
+                $properties = Transform\ClassFieldSelection::resolve(
                     $this->classDef->printerFields,
                     $this->classDef->printerFields === null
                         ? $available
@@ -5861,14 +6011,9 @@ CODE;
                     'Printer',
                 );
             } catch (SyntaxError $error) {
-                throw new SyntaxError(CompileTimeAttributeDiagnostic::format(
-                    $error->getMessage(),
-                    'Printer',
-                    $class,
-                    $this->file,
-                ), 0, $error);
+                throw new SyntaxError(CompileTimeAttributeDiagnostic::format($error->getMessage(), 'Printer', $class, $this->file), 0, $error);
             }
-            \TypePhp\Transform\PrinterLowering::rebuildGeneratedMethod(
+            Transform\PrinterLowering::rebuildGeneratedMethod(
                 $class,
                 $properties,
                 $this->classDef->printerFields,
@@ -5876,9 +6021,9 @@ CODE;
             );
         }
         if ($class instanceof Node\Stmt\Class_ && $this->classDef->arrayableGenerated) {
-            $available = [...$this->parentPublicProperties($this->classDef->extends), ...\TypePhp\Transform\ClassFieldSelection::ownPublicProperties($class)];
+            $available = [...$this->parentPublicProperties($this->classDef->extends), ...Transform\ClassFieldSelection::ownPublicProperties($class)];
             try {
-                $properties = \TypePhp\Transform\ClassFieldSelection::resolve(
+                $properties = Transform\ClassFieldSelection::resolve(
                     $this->classDef->arrayableFields,
                     $this->classDef->arrayableFields === null
                         ? $available
@@ -5886,14 +6031,9 @@ CODE;
                     'Arrayable',
                 );
             } catch (SyntaxError $error) {
-                throw new SyntaxError(CompileTimeAttributeDiagnostic::format(
-                    $error->getMessage(),
-                    'Arrayable',
-                    $class,
-                    $this->file,
-                ), 0, $error);
+                throw new SyntaxError(CompileTimeAttributeDiagnostic::format($error->getMessage(), 'Arrayable', $class, $this->file), 0, $error);
             }
-            \TypePhp\Transform\ArrayableLowering::rebuildGeneratedMethod(
+            Transform\ArrayableLowering::rebuildGeneratedMethod(
                 $class,
                 $properties,
                 $this->classDef->arrayableFields,
@@ -6098,7 +6238,7 @@ CODE;
         foreach ($this->classDef->constants as $constant) {
             if ($constant->codegenFinalized
                 || $constant->traitOrigin === ''
-                || !$constant->valueExpr instanceof Node\Expr
+                || !$constant->valueExpr instanceof Expr
             ) {
                 continue;
             }
@@ -6109,7 +6249,7 @@ CODE;
 
         foreach ($this->classDef->properties as $property) {
             $origin = $property->node?->getAttribute(self::TRAIT_ORIGIN_ATTRIBUTE);
-            if (!is_string($origin) || $origin === '' || !$property->defaultExpr instanceof Node\Expr) {
+            if (!is_string($origin) || $origin === '' || !$property->defaultExpr instanceof Expr) {
                 continue;
             }
             $this->withTraitNameContext($origin, function () use ($property): void {
@@ -6152,9 +6292,8 @@ CODE;
         string $fn,
         FunctionDef $functionDef,
         string $displayName,
-        array $implicitMethodArgs = []
-    ): string
-    {
+        array $implicitMethodArgs = [],
+    ): string {
         // A generated ZEND_FUNCTION/ZEND_METHOD is a callback boundary owned by
         // ZendVM. Native TypePHP code uses C++ exceptions so its local RAII
         // objects unwind correctly, but that exception must not escape through
@@ -6311,12 +6450,12 @@ CODE;
          * as they are used, rather than held for the long term.
          */
         $indent = $this->getIndent();
-        $cppCode = $indent . "const char *value = " . $this->genCharPtr($entryFile, true) . ';' . PHP_EOL;
+        $cppCode = $indent . 'const char *value = ' . $this->genCharPtr($entryFile, true) . ';' . PHP_EOL;
         $cppCode .= $indent . 'php::Var &_SERVER = ' . $this->escapeGlobalVar('_SERVER') . ';' . PHP_EOL;
-        $cppCode .= $indent . '_SERVER.item("PHP_SELF", true) = value;'. PHP_EOL;
-        $cppCode .= $indent . '_SERVER.item("SCRIPT_NAME", true) = value;'. PHP_EOL;
-        $cppCode .= $indent . '_SERVER.item("SCRIPT_FILENAME", true) = value;'. PHP_EOL;
-        $cppCode .= $indent . '_SERVER.item("PATH_TRANSLATED", true) = value;'. PHP_EOL;
+        $cppCode .= $indent . '_SERVER.item("PHP_SELF", true) = value;' . PHP_EOL;
+        $cppCode .= $indent . '_SERVER.item("SCRIPT_NAME", true) = value;' . PHP_EOL;
+        $cppCode .= $indent . '_SERVER.item("SCRIPT_FILENAME", true) = value;' . PHP_EOL;
+        $cppCode .= $indent . '_SERVER.item("PATH_TRANSLATED", true) = value;' . PHP_EOL;
         $cppCode .= $indent . '_SERVER.item("DOCUMENT_ROOT", true) = "";' . PHP_EOL;
 
         return $cppCode . PHP_EOL;
@@ -6611,7 +6750,7 @@ CODE;
 
         if ($multiReturn && !$nativeClassMethod) {
             $forwardArgs = implode(', ', array_map(
-                fn($argInfo) => $this->canConsumeForwardedArgument($argInfo)
+                fn ($argInfo) => $this->canConsumeForwardedArgument($argInfo)
                     ? 'php::takeValue(' . $argInfo->name . ')'
                     : $argInfo->name,
                 $this->functionDef->argInfoList,
@@ -6637,7 +6776,7 @@ CODE;
     protected function checkParentMethodCanBeOverridden(
         Node\Stmt\ClassMethod $v,
         string $name,
-        bool $childIsAbstract = false
+        bool $childIsAbstract = false,
     ): void {
         // Zend exempts constructors from the LSP checks against a CONCRETE
         // parent constructor (subclasses may freely change the construction
@@ -6735,7 +6874,7 @@ CODE;
         MethodDef $childMethodDef,
         MethodDef $parentMethodDef,
         string $parentClass,
-        ?string $childClass = null
+        ?string $childClass = null,
     ): void {
         $className = $childClass ?? $this->getFullClassName();
 
@@ -6859,7 +6998,7 @@ CODE;
         NodeAbstract $v,
         string $className,
         string $methodName,
-        string $parentClass
+        string $parentClass,
     ): void {
         $message = "Declaration of `{$className}::{$methodName}()` must be compatible " .
             "with `{$parentClass}::{$methodName}()`";
@@ -6917,7 +7056,7 @@ CODE;
         Node\Stmt\ClassMethod $v,
         string $methodName,
         MethodDef $childMethodDef,
-        string $parentClass
+        string $parentClass,
     ): void {
         $parentRef = Reflection::getClass($parentClass);
         if (!$parentRef || !$parentRef->hasMethod($methodName)) {
@@ -7014,7 +7153,7 @@ CODE;
     private function isParameterTypeOverrideCompatibleWithReflection(
         ArgInfo $childArg,
         \ReflectionParameter $parentParam,
-        string $parentClass
+        string $parentClass,
     ): bool {
         // A child accepting anything is always contravariant-compatible.
         if ($this->isTopParameterType($childArg)) {
@@ -7602,12 +7741,9 @@ CODE;
         $implementationTypes = $this->getPropertyAcceptedTypes($property);
         $contractTypes = $this->getPropertyAcceptedTypes($contract);
         $compatible = match (true) {
-            $contract->readable && !$contract->writable =>
-                $this->isPropertyTypeSubset($implementationTypes, $contractTypes),
-            $contract->writable && !$contract->readable =>
-                $this->isPropertyTypeSubset($contractTypes, $implementationTypes),
-            default =>
-                $this->isPropertyTypeSubset($implementationTypes, $contractTypes)
+            $contract->readable && !$contract->writable => $this->isPropertyTypeSubset($implementationTypes, $contractTypes),
+            $contract->writable && !$contract->readable => $this->isPropertyTypeSubset($contractTypes, $implementationTypes),
+            default => $this->isPropertyTypeSubset($implementationTypes, $contractTypes)
                 && $this->isPropertyTypeSubset($contractTypes, $implementationTypes),
         };
         if (!$compatible) {
@@ -8678,8 +8814,7 @@ CODE;
         ConstantDef $existing,
         ConstantDef $incoming,
         string $incomingOrigin,
-    ): bool
-    {
+    ): bool {
         if ($existing->flags !== $incoming->flags
             || $existing->type !== $incoming->type
             || $existing->class !== $incoming->class
@@ -8690,7 +8825,7 @@ CODE;
         $existingOrigin = $existing->traitOrigin !== ''
             ? $existing->traitOrigin
             : $this->classDef->getNamespacedName(false);
-        if ($existing->valueExpr instanceof Node\Expr && $incoming->valueExpr instanceof Node\Expr) {
+        if ($existing->valueExpr instanceof Expr && $incoming->valueExpr instanceof Expr) {
             return $this->traitMemberExpressionsAreIdentical(
                 $existing->valueExpr,
                 $existingOrigin,
@@ -8711,8 +8846,7 @@ CODE;
         PropertyDef $existing,
         PropertyDef $incoming,
         string $incomingOrigin,
-    ): bool
-    {
+    ): bool {
         if ($existing->flags !== $incoming->flags
             || $existing->type !== $incoming->type
             || $existing->class !== $incoming->class
@@ -8727,11 +8861,11 @@ CODE;
         $existingOrigin = is_string($originAttribute) && $originAttribute !== ''
             ? $originAttribute
             : $this->classDef->getNamespacedName(false);
-        if ($existing->defaultExpr instanceof Node\Expr || $incoming->defaultExpr instanceof Node\Expr) {
+        if ($existing->defaultExpr instanceof Expr || $incoming->defaultExpr instanceof Expr) {
             return $this->traitMemberExpressionsAreIdentical(
-                $existing->defaultExpr instanceof Node\Expr ? $existing->defaultExpr : null,
+                $existing->defaultExpr instanceof Expr ? $existing->defaultExpr : null,
                 $existingOrigin,
-                $incoming->defaultExpr instanceof Node\Expr ? $incoming->defaultExpr : null,
+                $incoming->defaultExpr instanceof Expr ? $incoming->defaultExpr : null,
                 $incomingOrigin,
                 $this->classDef,
                 $existing->type,
@@ -8823,5 +8957,4 @@ CODE;
             substr($fullName, 0, $separator),
         );
     }
-
 }