add imagemagick (imagick) for macos, pkg-config for unix.=

src/SPC/builder/linux/library/LinuxLibraryBase.php

@@ -61,6 +61,11 @@ abstract class LinuxLibraryBase extends LibraryBase
                 return BUILD_STATUS_OK;
             }
         }
+        // pkg-config 做特殊处理，如果是 pkg-config 就检查有没有 pkg-config 二进制
+        if (static::NAME === 'pkg-config' && !file_exists(BUILD_ROOT_PATH . '/bin/pkg-config')) {
+            $this->tryBuild(true);
+            return BUILD_STATUS_OK;
+        }
         // 到这里说明所有的文件都存在，就跳过编译
         return BUILD_STATUS_ALREADY;
     }

src/SPC/builder/linux/library/libpng.php

@@ -61,5 +61,6 @@ class libpng extends LinuxLibraryBase
             ->cd(BUILD_LIB_PATH)
             ->exec('ln -sf libpng16.a libpng.a');
         $this->patchPkgconfPrefix(['libpng16.pc'], PKGCONF_PATCH_PREFIX);
+        $this->cleanLaFiles();
     }
 }

src/SPC/builder/linux/library/pkgconfig.php

@@ -0,0 +1,15 @@
+<?php
+
+declare(strict_types=1);
+
+namespace SPC\builder\linux\library;
+
+/**
+ * gmp is a template library class for unix
+ */
+class pkgconfig extends LinuxLibraryBase
+{
+    use \SPC\builder\unix\library\pkgconfig;
+
+    public const NAME = 'pkg-config';
+}