Add DirDiff utility and enhance package build process

- Introduced DirDiff class for tracking directory file changes.
- Updated ConsoleApplication to use addCommand for build targets.
- Enhanced PackageBuilder with methods for deploying binaries and extracting debug info.
- Improved package installation logic to support shared extensions.
- Added readline extension with patching for static builds.

bin/spc-alpine-docker

@@ -3,7 +3,7 @@
 set -e
 
 # This file is using docker to run commands
-SPC_DOCKER_VERSION=v6
+SPC_DOCKER_VERSION=v7
 
 # Detect docker can run
 if ! which docker >/dev/null; then
@@ -123,6 +123,7 @@ COPY ./composer.* /app/
 ADD ./bin /app/bin
 RUN composer install --no-dev
 ADD ./config /app/config
+ADD ./spc.registry.json /app/spc.registry.json
 RUN bin/spc doctor --auto-fix
 RUN bin/spc install-pkg upx
 

src/Package/Extension/readline.php

@@ -0,0 +1,34 @@
+<?php
+
+declare(strict_types=1);
+
+namespace Package\Extension;
+
+use StaticPHP\Attribute\Package\AfterStage;
+use StaticPHP\Attribute\Package\BeforeStage;
+use StaticPHP\Attribute\Package\Extension;
+use StaticPHP\Package\PackageInstaller;
+use StaticPHP\Toolchain\Interface\ToolchainInterface;
+use StaticPHP\Util\SourcePatcher;
+
+#[Extension('readline')]
+class readline
+{
+    #[BeforeStage('php', 'unix-make-cli')]
+    public function beforeMakeLinuxCli(PackageInstaller $installer, ToolchainInterface $toolchain): void
+    {
+        if ($toolchain->isStatic()) {
+            $php_src = $installer->getBuildPackage('php')->getSourceDir();
+            SourcePatcher::patchFile('musl_static_readline.patch', $php_src);
+        }
+    }
+
+    #[AfterStage('php', 'unix-make-cli')]
+    public function afterMakeLinuxCli(PackageInstaller $installer, ToolchainInterface $toolchain): void
+    {
+        if ($toolchain->isStatic()) {
+            $php_src = $installer->getBuildPackage('php')->getSourceDir();
+            SourcePatcher::patchFile('musl_static_readline.patch', $php_src, true);
+        }
+    }
+}

src/Package/Library/imap.php

@@ -0,0 +1,24 @@
+<?php
+
+declare(strict_types=1);
+
+namespace Package\Library;
+
+use StaticPHP\Attribute\Package\AfterStage;
+use StaticPHP\Attribute\Package\Library;
+use StaticPHP\Attribute\PatchDescription;
+use StaticPHP\Runtime\SystemTarget;
+use StaticPHP\Util\FileSystem;
+
+#[Library('imap')]
+class imap
+{
+    #[AfterStage('php', 'patch-embed-scripts')]
+    #[PatchDescription('Fix missing -lcrypt in php-config libs on glibc systems')]
+    public function afterPatchScripts(): void
+    {
+        if (SystemTarget::getLibc() === 'glibc') {
+            FileSystem::replaceFileRegex(BUILD_BIN_PATH . '/php-config', '/^libs="(.*)"$/m', 'libs="$1 -lcrypt"');
+        }
+    }
+}

src/Package/Target/php.php

@@ -26,10 +26,12 @@ use StaticPHP\Package\TargetPackage;
 use StaticPHP\Runtime\SystemTarget;
 use StaticPHP\Toolchain\Interface\ToolchainInterface;
 use StaticPHP\Toolchain\ToolchainManager;
+use StaticPHP\Util\DirDiff;
 use StaticPHP\Util\FileSystem;
 use StaticPHP\Util\InteractiveTerm;
 use StaticPHP\Util\SourcePatcher;
 use StaticPHP\Util\SPCConfigUtil;
+use StaticPHP\Util\System\UnixUtil;
 use StaticPHP\Util\V2CompatLayer;
 use Symfony\Component\Console\Input\InputArgument;
 use Symfony\Component\Console\Input\InputOption;
@@ -312,11 +314,17 @@ class php
         if ($installer->isBuildPackage('php-cli')) {
             $package->runStage('unix-make-cli');
         }
+        if ($installer->isBuildPackage('php-cgi')) {
+            $package->runStage('unix-make-cgi');
+        }
         if ($installer->isBuildPackage('php-fpm')) {
             $package->runStage('unix-make-fpm');
         }
-        if ($installer->isBuildPackage('php-cgi')) {
-            $package->runStage('unix-make-cgi');
+        if ($installer->isBuildPackage('php-micro')) {
+            $package->runStage('unix-make-micro');
+        }
+        if ($installer->isBuildPackage('php-embed')) {
+            $package->runStage('unix-make-embed');
         }
     }
 
@@ -330,9 +338,103 @@ class php
             ->exec("make -j{$concurrency} cli");
     }
 
+    #[Stage('unix-make-cgi')]
+    public function makeCgiForUnix(TargetPackage $package, PackageInstaller $installer, PackageBuilder $builder): void
+    {
+        InteractiveTerm::setMessage('Building php: ' . ConsoleColor::yellow('make cgi'));
+        $concurrency = $builder->concurrency;
+        shell()->cd($package->getSourceDir())
+            ->setEnv($this->makeVars($installer))
+            ->exec("make -j{$concurrency} cgi");
+    }
+
+    #[Stage('unix-make-fpm')]
+    public function makeFpmForUnix(TargetPackage $package, PackageInstaller $installer, PackageBuilder $builder): void
+    {
+        InteractiveTerm::setMessage('Building php: ' . ConsoleColor::yellow('make fpm'));
+        $concurrency = $builder->concurrency;
+        shell()->cd($package->getSourceDir())
+            ->setEnv($this->makeVars($installer))
+            ->exec("make -j{$concurrency} fpm");
+    }
+
+    #[Stage('unix-make-micro')]
+    public function makeMicroForUnix(TargetPackage $package, PackageInstaller $installer, PackageBuilder $builder): void
+    {
+        $phar_patched = false;
+        try {
+            if ($installer->isPackageResolved('ext-phar')) {
+                $phar_patched = true;
+                SourcePatcher::patchMicroPhar(self::getPHPVersionID());
+            }
+            InteractiveTerm::setMessage('Building php: ' . ConsoleColor::yellow('make micro'));
+            // apply --with-micro-fake-cli option
+            $vars = $this->makeVars($installer);
+            $vars['EXTRA_CFLAGS'] .= $package->getBuildOption('with-micro-fake-cli', false) ? ' -DPHP_MICRO_FAKE_CLI' : '';
+            // build
+            shell()->cd($package->getSourceDir())
+                ->setEnv($vars)
+                ->exec("make -j{$builder->concurrency} micro");
+        } finally {
+            if ($phar_patched) {
+                SourcePatcher::unpatchMicroPhar();
+            }
+        }
+    }
+
+    #[Stage('unix-make-embed')]
+    public function makeEmbedForUnix(TargetPackage $package, PackageInstaller $installer, PackageBuilder $builder): void
+    {
+        $shared_exts = array_filter(
+            $installer->getResolvedPackages(),
+            static fn ($x) => $x instanceof PhpExtensionPackage && $x->isBuildShared() && $x->isBuildWithPhp()
+        );
+        $install_modules = $shared_exts ? 'install-modules' : '';
+
+        // detect changes in module path
+        $diff = new DirDiff(BUILD_MODULES_PATH, true);
+
+        $root = BUILD_ROOT_PATH;
+        shell()->cd($package->getSourceDir())
+            ->setEnv($this->makeVars($installer))
+            ->exec('sed -i "s|^EXTENSION_DIR = .*|EXTENSION_DIR = /' . basename(BUILD_MODULES_PATH) . '|" Makefile')
+            ->exec("make -j{$builder->concurrency} INSTALL_ROOT={$root} install-sapi {$install_modules} install-build install-headers install-programs");
+
+        // ------------- SPC_CMD_VAR_PHP_EMBED_TYPE=shared -------------
+
+        // process libphp.so for shared embed
+        $suffix = SystemTarget::getTargetOS() === 'Darwin' ? 'dylib' : 'so';
+        $libphp_so = "{$package->getLibDir()}/libphp.{$suffix}";
+        if (file_exists($libphp_so)) {
+            // rename libphp.so if -release is set
+            if (SystemTarget::getTargetOS() === 'Linux') {
+                $this->processLibphpSoFile($libphp_so, $installer);
+            }
+            // deploy
+            $builder->deployBinary($libphp_so, $libphp_so, false);
+        }
+
+        // process shared extensions that built-with-php
+        $increment_files = $diff->getChangedFiles();
+        foreach ($increment_files as $increment_file) {
+            $builder->deployBinary($increment_file, $libphp_so, false);
+        }
+
+        // ------------- SPC_CMD_VAR_PHP_EMBED_TYPE=static -------------
+
+        // process libphp.a for static embed
+        $ar = getenv('AR') ?: 'ar';
+        $libphp_a = "{$package->getLibDir()}/libphp.a";
+        shell()->exec("{$ar} -t {$libphp_a} | grep '\\.a$' | xargs -n1 {$ar} d {$libphp_a}");
+        UnixUtil::exportDynamicSymbols($libphp_a);
+
+        // deploy embed php scripts
+        $package->runStage('patch-embed-scripts');
+    }
+
     #[BuildFor('Darwin')]
     #[BuildFor('Linux')]
-    public function build(TargetPackage $package): void
+    public function build(TargetPackage $package, PackageInstaller $installer, ToolchainInterface $toolchain): void
     {
         // virtual target, do nothing
         if ($package->getName() !== 'php') {
@@ -342,6 +444,68 @@ class php
         $package->runStage('unix-buildconf');
         $package->runStage('unix-configure');
         $package->runStage('unix-make');
+
+        // collect shared extensions
+        /** @var PhpExtensionPackage[] $shared_extensions */
+        $shared_extensions = array_filter(
+            $installer->getResolvedPackages(PhpExtensionPackage::class),
+            fn ($x) => $x->isBuildShared() && !$x->isBuildWithPhp()
+        );
+        if (!empty($shared_extensions)) {
+            if ($toolchain->isStatic()) {
+                throw new WrongUsageException(
+                    "You're building against musl libc statically (the default on Linux), but you're trying to build shared extensions.\n" .
+                    'Static musl libc does not implement `dlopen`, so your php binary is not able to load shared extensions.' . "\n" .
+                    'Either use SPC_LIBC=glibc to link against glibc on a glibc OS, or use SPC_TARGET="native-native-musl -dynamic" to link against musl libc dynamically using `zig cc`.'
+                );
+            }
+            FileSystem::createDir(BUILD_MODULES_PATH);
+
+            // backup
+            FileSystem::backupFile(BUILD_BIN_PATH . '/php-config');
+            FileSystem::backupFile(BUILD_LIB_PATH . '/php/build/phpize.m4');
+
+            FileSystem::replaceFileLineContainsString(BUILD_BIN_PATH . '/php-config', 'extension_dir=', 'extension_dir="' . BUILD_MODULES_PATH . '"');
+            FileSystem::replaceFileStr(BUILD_LIB_PATH . '/php/build/phpize.m4', 'test "[$]$1" = "no" && $1=yes', '# test "[$]$1" = "no" && $1=yes');
+        }
+
+        try {
+            foreach ($shared_extensions as $extension) {
+                logger()->info('Building shared extensions...');
+                $extension->buildSharedExtension();
+            }
+        } finally {
+            // restore php-config
+            if (!empty($shared_extensions)) {
+                FileSystem::restoreBackupFile(BUILD_BIN_PATH . '/php-config');
+                FileSystem::restoreBackupFile(BUILD_LIB_PATH . '/php/build/phpize.m4');
+            }
+        }
+    }
+
+    /**
+     * Patch phpize and php-config if needed
+     */
+    #[Stage('patch-embed-scripts')]
+    public function patchPhpScripts(): void
+    {
+        // patch phpize
+        if (file_exists(BUILD_BIN_PATH . '/phpize')) {
+            logger()->debug('Patching phpize prefix');
+            FileSystem::replaceFileStr(BUILD_BIN_PATH . '/phpize', "prefix=''", "prefix='" . BUILD_ROOT_PATH . "'");
+            FileSystem::replaceFileStr(BUILD_BIN_PATH . '/phpize', 's##', 's#/usr/local#');
+        }
+        // patch php-config
+        if (file_exists(BUILD_BIN_PATH . '/php-config')) {
+            logger()->debug('Patching php-config prefix and libs order');
+            $php_config_str = FileSystem::readFile(BUILD_BIN_PATH . '/php-config');
+            $php_config_str = str_replace('prefix=""', 'prefix="' . BUILD_ROOT_PATH . '"', $php_config_str);
+            // move mimalloc to the beginning of libs
+            $php_config_str = preg_replace('/(libs=")(.*?)\s*(' . preg_quote(BUILD_LIB_PATH, '/') . '\/mimalloc\.o)\s*(.*?)"/', '$1$3 $2 $4"', $php_config_str);
+            // move lstdc++ to the end of libs
+            $php_config_str = preg_replace('/(libs=")(.*?)\s*(-lstdc\+\+)\s*(.*?)"/', '$1$2 $4 $3"', $php_config_str);
+            FileSystem::writeFile(BUILD_BIN_PATH . '/php-config', $php_config_str);
+        }
     }
 
     /**
@@ -381,6 +545,10 @@ class php
         return $str;
     }
 
+    /**
+     * Make environment variables for php make.
+     * This will call SPCConfigUtil to generate proper LDFLAGS and LIBS for static linking.
+     */
     private function makeVars(PackageInstaller $installer): array
     {
         $config = (new SPCConfigUtil(['libs_only_deps' => true]))->config(array_map(fn ($x) => $x->getName(), $installer->getResolvedPackages()));
@@ -394,4 +562,75 @@ class php
             'EXTRA_LIBS' => $config['libs'],
         ]);
     }
+
+    /**
+     * Rename libphp.so to libphp-<release>.so if -release is set in LDFLAGS.
+     */
+    private function processLibphpSoFile(string $libphpSo, PackageInstaller $installer): void
+    {
+        $ldflags = getenv('SPC_CMD_VAR_PHP_MAKE_EXTRA_LDFLAGS') ?: '';
+        $libDir = BUILD_LIB_PATH;
+        $modulesDir = BUILD_MODULES_PATH;
+        $realLibName = 'libphp.so';
+        $cwd = getcwd();
+
+        if (preg_match('/-release\s+(\S+)/', $ldflags, $matches)) {
+            $release = $matches[1];
+            $realLibName = "libphp-{$release}.so";
+            $libphpRelease = "{$libDir}/{$realLibName}";
+            if (!file_exists($libphpRelease) && file_exists($libphpSo)) {
+                rename($libphpSo, $libphpRelease);
+            }
+            if (file_exists($libphpRelease)) {
+                chdir($libDir);
+                if (file_exists($libphpSo)) {
+                    unlink($libphpSo);
+                }
+                symlink($realLibName, 'libphp.so');
+                shell()->exec(sprintf(
+                    'patchelf --set-soname %s %s',
+                    escapeshellarg($realLibName),
+                    escapeshellarg($libphpRelease)
+                ));
+            }
+            if (is_dir($modulesDir)) {
+                chdir($modulesDir);
+                foreach ($installer->getResolvedPackages(PhpExtensionPackage::class) as $ext) {
+                    if (!$ext->isBuildShared()) {
+                        continue;
+                    }
+                    $name = $ext->getName();
+                    $versioned = "{$name}-{$release}.so";
+                    $unversioned = "{$name}.so";
+                    $src = "{$modulesDir}/{$versioned}";
+                    $dst = "{$modulesDir}/{$unversioned}";
+                    if (is_file($src)) {
+                        rename($src, $dst);
+                        shell()->exec(sprintf(
+                            'patchelf --set-soname %s %s',
+                            escapeshellarg($unversioned),
+                            escapeshellarg($dst)
+                        ));
+                    }
+                }
+            }
+            chdir($cwd);
+        }
+
+        $target = "{$libDir}/{$realLibName}";
+        if (file_exists($target)) {
+            [, $output] = shell()->execWithResult('readelf -d ' . escapeshellarg($target));
+            $output = implode("\n", $output);
+            if (preg_match('/SONAME.*\[(.+)]/', $output, $sonameMatch)) {
+                $currentSoname = $sonameMatch[1];
+                if ($currentSoname !== basename($target)) {
+                    shell()->exec(sprintf(
+                        'patchelf --set-soname %s %s',
+                        escapeshellarg(basename($target)),
+                        escapeshellarg($target)
+                    ));
+                }
+            }
+        }
+    }
 }

src/StaticPHP/ConsoleApplication.php

@@ -35,10 +35,11 @@ class ConsoleApplication extends Application
             // only add target that contains artifact.source
             if ($package->hasStage('build')) {
                 logger()->debug("Registering build target command for package: {$name}");
-                $this->add(new BuildTargetCommand($name));
+                $this->addCommand(new BuildTargetCommand($name));
             }
         }
 
+        // add core commands
         $this->addCommands([
             new DownloadCommand(),
             new DoctorCommand(),

src/StaticPHP/Package/PackageBuilder.php

@@ -9,9 +9,11 @@ use StaticPHP\DI\ApplicationContext;
 use StaticPHP\Exception\SPCInternalException;
 use StaticPHP\Exception\WrongUsageException;
 use StaticPHP\Runtime\Shell\Shell;
+use StaticPHP\Runtime\SystemTarget;
 use StaticPHP\Util\FileSystem;
 use StaticPHP\Util\GlobalEnvManager;
 use StaticPHP\Util\InteractiveTerm;
+use StaticPHP\Util\System\LinuxUtil;
 
 class PackageBuilder
 {
@@ -85,6 +87,92 @@ class PackageBuilder
         return $this->options[$key] ?? $default;
     }
 
+    /**
+     * Deploy the binary file from src to dst.
+     */
+    public function deployBinary(string $src, string $dst, bool $executable = true): string
+    {
+        logger()->debug("Deploying binary from {$src} to {$dst}");
+
+        // file must exists
+        if (!file_exists($src)) {
+            throw new SPCInternalException("Deploy failed. Cannot find file: {$src}");
+        }
+        // dst dir must exists
+        FileSystem::createDir(dirname($dst));
+
+        // ignore copy to self
+        if (realpath($src) !== realpath($dst)) {
+            shell()->exec('cp ' . escapeshellarg($src) . ' ' . escapeshellarg($dst));
+        }
+
+        // file exist
+        if (!file_exists($dst)) {
+            throw new SPCInternalException("Deploy failed. Cannot find file after copy: {$dst}");
+        }
+
+        // extract debug info
+        $this->extractDebugInfo($dst);
+
+        // strip
+        if (!$this->getOption('no-strip')) {
+            $this->stripBinary($dst);
+        }
+
+        // UPX for linux
+        $upx_option = $this->getOption('with-upx-pack');
+        if ($upx_option && SystemTarget::getTargetOS() === 'Linux' && $executable) {
+            if ($this->getOption('no-strip')) {
+                logger()->warning('UPX compression is not recommended when --no-strip is enabled.');
+            }
+            logger()->info("Compressing {$dst} with UPX");
+            shell()->exec(getenv('UPX_EXEC') . " --best {$dst}");
+        }
+
+        return $dst;
+    }
+
+    /**
+     * Extract debug information from binary file.
+     *
+     * @param string $binary_path the path to the binary file, including executables, shared libraries, etc
+     */
+    public function extractDebugInfo(string $binary_path): string
+    {
+        $target_dir = BUILD_ROOT_PATH . '/debug';
+        FileSystem::createDir($target_dir);
+        $basename = basename($binary_path);
+        $debug_file = "{$target_dir}/{$basename}" . (SystemTarget::getTargetOS() === 'Darwin' ? '.dwarf' : '.debug');
+        if (SystemTarget::getTargetOS() === 'Darwin') {
+            shell()->exec("dsymutil -f {$binary_path} -o {$debug_file}");
+        } elseif (SystemTarget::getTargetOS() === 'Linux') {
+            if ($eu_strip = LinuxUtil::findCommand('eu-strip')) {
+                shell()
+                    ->exec("{$eu_strip} -f {$debug_file} {$binary_path}")
+                    ->exec("objcopy --add-gnu-debuglink={$debug_file} {$binary_path}");
+            } else {
+                shell()
+                    ->exec("objcopy --only-keep-debug {$binary_path} {$debug_file}")
+                    ->exec("objcopy --add-gnu-debuglink={$debug_file} {$binary_path}");
+            }
+        } else {
+            throw new SPCInternalException('extractDebugInfo is only supported on Linux and macOS');
+        }
+        return $debug_file;
+    }
+
+    /**
+     * Strip unneeded symbols from binary file.
+     */
+    public function stripBinary(string $binary_path): void
+    {
+        shell()->exec(match (SystemTarget::getTargetOS()) {
+            'Darwin' => "strip -S {$binary_path}",
+            'Linux' => "strip --strip-unneeded {$binary_path}",
+            default => throw new SPCInternalException('stripBinary is only supported on Linux and macOS'),
+        });
+    }
+
     private function installLicense(Package $package, array $license): void
     {
         $dir = BUILD_ROOT_PATH . '/source-licenses/' . $package->getName();

src/StaticPHP/Package/PackageInstaller.php

@@ -195,15 +195,20 @@ class PackageInstaller
 
     /**
      * Get all resolved packages.
+     * You can filter by package type class if needed.
      *
-     * @return array<string, Package>
+     * @template T
+     * @param  class-string<T> $package_type Filter by package type
+     * @return array<T>
      */
-    public function getResolvedPackages(): array
+    public function getResolvedPackages(mixed $package_type = Package::class): array
     {
-        return $this->packages;
+        return array_filter($this->packages, function (Package $pkg) use ($package_type): bool {
+            return $pkg instanceof $package_type;
+        });
     }
 
-    public function isPackageBeingResolved(string $package_name): bool
+    public function isPackageResolved(string $package_name): bool
     {
         return isset($this->packages[$package_name]);
     }

src/StaticPHP/Package/PackageLoader.php

@@ -232,7 +232,7 @@ class PackageLoader
         $installer = ApplicationContext::get(PackageInstaller::class);
         $stages = self::$before_stages[$package_name][$stage] ?? [];
         foreach ($stages as [$callback, $only_when_package_resolved]) {
-            if ($only_when_package_resolved !== null && !$installer->isPackageBeingResolved($only_when_package_resolved)) {
+            if ($only_when_package_resolved !== null && !$installer->isPackageResolved($only_when_package_resolved)) {
                 continue;
             }
             yield $callback;
@@ -246,7 +246,7 @@ class PackageLoader
         $stages = self::$after_stage[$package_name][$stage] ?? [];
         $result = [];
         foreach ($stages as [$callback, $only_when_package_resolved]) {
-            if ($only_when_package_resolved !== null && !$installer->isPackageBeingResolved($only_when_package_resolved)) {
+            if ($only_when_package_resolved !== null && !$installer->isPackageResolved($only_when_package_resolved)) {
                 continue;
             }
             $result[] = $callback;

src/StaticPHP/Package/PhpExtensionPackage.php

@@ -107,4 +107,9 @@ class PhpExtensionPackage extends Package
     {
         return $this->build_with_php;
     }
+
+    public function buildSharedExtension(): void
+    {
+        // TODO: build common shared extensions code here...
+    }
 }

src/StaticPHP/Registry/Registry.php

@@ -252,6 +252,12 @@ class Registry
         );
     }
 
+    /**
+     * Return full path, resolving relative paths against a base path.
+     *
+     * @param string $path               Input path (relative or absolute)
+     * @param string $relative_path_base Base path for relative paths
+     */
     private static function fullpath(string $path, string $relative_path_base): string
     {
         if (FileSystem::isRelativePath($path)) {

src/StaticPHP/Util/DirDiff.php

@@ -0,0 +1,95 @@
+<?php
+
+declare(strict_types=1);
+
+namespace StaticPHP\Util;
+
+/**
+ * A util class to diff directory file increments.
+ */
+class DirDiff
+{
+    protected array $before = [];
+
+    protected array $before_file_hashes = [];
+
+    public function __construct(protected string $dir, protected bool $track_content_changes = false)
+    {
+        $this->reset();
+    }
+
+    /**
+     * Reset the baseline to current state.
+     */
+    public function reset(): void
+    {
+        $this->before = FileSystem::scanDirFiles($this->dir, relative: true) ?: [];
+
+        if ($this->track_content_changes) {
+            $this->before_file_hashes = [];
+            foreach ($this->before as $file) {
+                $this->before_file_hashes[$file] = md5_file($this->dir . DIRECTORY_SEPARATOR . $file);
+            }
+        }
+    }
+
+    /**
+     * Get the list of incremented files.
+     *
+     * @param  bool          $relative Return relative paths or absolute paths
+     * @return array<string> List of incremented files
+     */
+    public function getIncrementFiles(bool $relative = false): array
+    {
+        $after = FileSystem::scanDirFiles($this->dir, relative: true) ?: [];
+        $diff = array_diff($after, $this->before);
+        if ($relative) {
+            return $diff;
+        }
+        return array_map(fn ($f) => $this->dir . DIRECTORY_SEPARATOR . $f, $diff);
+    }
+
+    /**
+     * Get the list of changed files (including new files).
+     *
+     * @param  bool          $relative          Return relative paths or absolute paths
+     * @param  bool          $include_new_files Include new files as changed files
+     * @return array<string> List of changed files
+     */
+    public function getChangedFiles(bool $relative = false, bool $include_new_files = true): array
+    {
+        $after = FileSystem::scanDirFiles($this->dir, relative: true) ?: [];
+        $changed = [];
+        foreach ($after as $file) {
+            if (isset($this->before_file_hashes[$file])) {
+                $after_hash = md5_file($this->dir . DIRECTORY_SEPARATOR . $file);
+                if ($after_hash !== $this->before_file_hashes[$file]) {
+                    $changed[] = $file;
+                }
+            } elseif ($include_new_files) {
+                // New file, consider as changed
+                $changed[] = $file;
+            }
+        }
+        if ($relative) {
+            return $changed;
+        }
+        return array_map(fn ($f) => $this->dir . DIRECTORY_SEPARATOR . $f, $changed);
+    }
+
+    /**
+     * Get the list of removed files.
+     *
+     * @param  bool          $relative Return relative paths or absolute paths
+     * @return array<string> List of removed files
+     */
+    public function getRemovedFiles(bool $relative = false): array
+    {
+        $after = FileSystem::scanDirFiles($this->dir, relative: true) ?: [];
+        $removed = array_diff($this->before, $after);
+        if ($relative) {
+            return $removed;
+        }
+        return array_map(fn ($f) => $this->dir . DIRECTORY_SEPARATOR . $f, $removed);
+    }
+}

src/StaticPHP/Util/SourcePatcher.php

@@ -159,4 +159,39 @@ class SourcePatcher
 
         return $result;
     }
+
+    /**
+     * Patch micro SAPI to support compressed phar loading from the current executable.
+     *
+     * @param int $version_id PHP version ID
+     */
+    public static function patchMicroPhar(int $version_id): void
+    {
+        FileSystem::backupFile(SOURCE_PATH . '/php-src/ext/phar/phar.c');
+        FileSystem::replaceFileStr(
+            SOURCE_PATH . '/php-src/ext/phar/phar.c',
+            'static zend_op_array *phar_compile_file',
+            "char *micro_get_filename(void);\n\nstatic zend_op_array *phar_compile_file"
+        );
+        if ($version_id < 80100) {
+            // PHP 8.0.x
+            FileSystem::replaceFileStr(
+                SOURCE_PATH . '/php-src/ext/phar/phar.c',
+                'if (strstr(file_handle->filename, ".phar") && !strstr(file_handle->filename, "://")) {',
+                'if ((strstr(file_handle->filename, micro_get_filename()) || strstr(file_handle->filename, ".phar")) && !strstr(file_handle->filename, "://")) {'
+            );
+        } else {
+            // PHP >= 8.1
+            FileSystem::replaceFileStr(
+                SOURCE_PATH . '/php-src/ext/phar/phar.c',
+                'if (strstr(ZSTR_VAL(file_handle->filename), ".phar") && !strstr(ZSTR_VAL(file_handle->filename), "://")) {',
+                'if ((strstr(ZSTR_VAL(file_handle->filename), micro_get_filename()) || strstr(ZSTR_VAL(file_handle->filename), ".phar")) && !strstr(ZSTR_VAL(file_handle->filename), "://")) {'
+            );
+        }
+    }
+
+    public static function unpatchMicroPhar(): void
+    {
+        FileSystem::restoreBackupFile(SOURCE_PATH . '/php-src/ext/phar/phar.c');
+    }
 }