initial commit for macOS support

src/SPC/builder/traits/UnixSystemUtilTrait.php

@@ -0,0 +1,68 @@
+<?php
+
+declare(strict_types=1);
+
+namespace SPC\builder\traits;
+
+/**
+ * Unix 系统的工具函数 Trait，适用于 Linux、macOS
+ */
+trait UnixSystemUtilTrait
+{
+    /**
+     * 生成 toolchain.cmake，用于 cmake 构建
+     *
+     * @param string      $os          操作系统代号
+     * @param string      $target_arch 目标架构
+     * @param string      $cflags      CFLAGS 参数
+     * @param null|string $cc          CC 参数（默认空）
+     * @param null|string $cxx         CXX 参数（默认空）
+     */
+    public static function makeCmakeToolchainFile(
+        string $os,
+        string $target_arch,
+        string $cflags,
+        ?string $cc = null,
+        ?string $cxx = null
+    ): string {
+        logger()->debug("making cmake tool chain file for {$os} {$target_arch} with CFLAGS='{$cflags}'");
+        $root = BUILD_ROOT_PATH;
+        $ccLine = '';
+        if ($cc) {
+            $ccLine = 'SET(CMAKE_C_COMPILER ' . self::findCommand($cc) . ')';
+        }
+        $cxxLine = '';
+        if ($cxx) {
+            $cxxLine = 'SET(CMAKE_CXX_COMPILER ' . self::findCommand($cxx) . ')';
+        }
+        $toolchain = <<<CMAKE
+SET(CMAKE_SYSTEM_NAME {$os})
+SET(CMAKE_SYSTEM_PROCESSOR {$target_arch})
+{$ccLine}
+{$cxxLine}
+SET(CMAKE_C_FLAGS "{$cflags}")
+SET(CMAKE_CXX_FLAGS "{$cflags}")
+SET(CMAKE_FIND_ROOT_PATH "{$root}")
+CMAKE;
+        file_put_contents(SOURCE_PATH . '/toolchain.cmake', $toolchain);
+        return realpath(SOURCE_PATH . '/toolchain.cmake');
+    }
+
+    /**
+     * @param  string      $name  命令名称
+     * @param  array       $paths 寻找的目标路径（如果不传入，则使用环境变量 PATH）
+     * @return null|string 找到了返回命令路径，找不到返回 null
+     */
+    public static function findCommand(string $name, array $paths = []): ?string
+    {
+        if (!$paths) {
+            $paths = explode(PATH_SEPARATOR, getenv('PATH'));
+        }
+        foreach ($paths as $path) {
+            if (file_exists($path . DIRECTORY_SEPARATOR . $name)) {
+                return $path . DIRECTORY_SEPARATOR . $name;
+            }
+        }
+        return null;
+    }
+}