Add PHP_BUILD_COMPILER for different toolchain

src/SPC/toolchain/ClangNativeToolchain.php

@@ -7,6 +7,7 @@ namespace SPC\toolchain;
 use SPC\builder\freebsd\SystemUtil as FreeBSDSystemUtil;
 use SPC\builder\linux\SystemUtil as LinuxSystemUtil;
 use SPC\builder\macos\SystemUtil as MacOSSystemUtil;
+use SPC\exception\RuntimeException;
 use SPC\exception\WrongUsageException;
 use SPC\util\GlobalEnvManager;
 
@@ -37,8 +38,19 @@ class ClangNativeToolchain implements ToolchainInterface
                 'Linux' => LinuxSystemUtil::findCommand($command) ?? throw new WrongUsageException("{$command} not found, please install it or set {$env} to a valid path."),
                 'Darwin' => MacOSSystemUtil::findCommand($command) ?? throw new WrongUsageException("{$command} not found, please install it or set {$env} to a valid path."),
                 'BSD' => FreeBSDSystemUtil::findCommand($command) ?? throw new WrongUsageException("{$command} not found, please install it or set {$env} to a valid path."),
-                default => throw new \RuntimeException(__CLASS__ . ' is not supported on ' . PHP_OS_FAMILY . '.'),
+                default => throw new RuntimeException(__CLASS__ . ' is not supported on ' . PHP_OS_FAMILY . '.'),
             };
         }
     }
+
+    public function getCompilerInfo(): ?string
+    {
+        $compiler = getenv('CC') ?: 'clang';
+        $version = shell(false)->execWithResult("{$compiler} --version", false);
+        $head = pathinfo($compiler, PATHINFO_BASENAME);
+        if ($version[0] === 0 && preg_match('/clang version (\d+.\d+.\d+)/', $version[1][0], $match)) {
+            return "{$head} {$match[1]}";
+        }
+        return $head;
+    }
 }

src/SPC/toolchain/GccNativeToolchain.php

@@ -35,4 +35,15 @@ class GccNativeToolchain implements ToolchainInterface
             };
         }
     }
+
+    public function getCompilerInfo(): ?string
+    {
+        $compiler = getenv('CC') ?: 'gcc';
+        $version = shell(false)->execWithResult("{$compiler} --version", false);
+        $head = pathinfo($compiler, PATHINFO_BASENAME);
+        if ($version[0] === 0 && preg_match('/gcc.*(\d+.\d+.\d+)/', $version[1][0], $match)) {
+            return "{$head} {$match[1]}";
+        }
+        return $head;
+    }
 }

src/SPC/toolchain/MSVCToolchain.php

@@ -9,4 +9,9 @@ class MSVCToolchain implements ToolchainInterface
     public function initEnv(): void {}
 
     public function afterInit(): void {}
+
+    public function getCompilerInfo(): ?string
+    {
+        return null;
+    }
 }

src/SPC/toolchain/MuslToolchain.php

@@ -36,4 +36,15 @@ class MuslToolchain implements ToolchainInterface
             throw new WrongUsageException('You are building with musl-libc target in glibc distro, but musl-toolchain is not installed, please install musl-toolchain first. (You can use `doctor` command to install it)');
         }
     }
+
+    public function getCompilerInfo(): ?string
+    {
+        $compiler = getenv('CC') ?: getenv('SPC_LINUX_DEFAULT_CC');
+        $version = shell(false)->execWithResult("{$compiler} --version", false);
+        $head = pathinfo($compiler, PATHINFO_BASENAME);
+        if ($version[0] === 0 && preg_match('/linux-musl-cc.*(\d+.\d+.\d+)/', $version[1][0], $match)) {
+            return "{$head} {$match[1]}";
+        }
+        return $head;
+    }
 }

src/SPC/toolchain/ToolchainInterface.php

@@ -27,4 +27,12 @@ interface ToolchainInterface
      * post-initialization setup or validation.
      */
     public function afterInit(): void;
+
+    /**
+     * Returns the compiler name and version for toolchains.
+     *
+     * If the toolchain does not support compiler information,
+     * this method can return null.
+     */
+    public function getCompilerInfo(): ?string;
 }

src/SPC/toolchain/ToolchainManager.php

@@ -61,6 +61,10 @@ class ToolchainManager
         }
         $toolchain = getenv('SPC_TOOLCHAIN');
         /* @var ToolchainInterface $toolchain */
-        (new $toolchain())->afterInit();
+        $instance = new $toolchain();
+        $instance->afterInit();
+        if (getenv('PHP_BUILD_COMPILER') === false && ($compiler_info = $instance->getCompilerInfo())) {
+            GlobalEnvManager::putenv("PHP_BUILD_COMPILER={$compiler_info}");
+        }
     }
 }

src/SPC/toolchain/ZigToolchain.php

@@ -68,4 +68,10 @@ class ZigToolchain implements ToolchainInterface
             GlobalEnvManager::putenv("SPC_EXTRA_LIBS={$extra_libs}");
         }
     }
+
+    public function getCompilerInfo(): ?string
+    {
+        $version = shell(false)->execWithResult('zig version', false)[1][0] ?? '';
+        return trim("zig {$version}");
+    }
 }