diff --git a/config/lib.json b/config/lib.json
index 079ebc1e..7d1ad213 100644
--- a/config/lib.json
+++ b/config/lib.json
@@ -1,9 +1,6 @@
 {
     "lib-base": {
-        "type": "root",
-        "lib-depends-unix": [
-            "pkg-config"
-        ]
+        "type": "root"
     },
     "php": {
         "type": "root",
diff --git a/config/pkg.json b/config/pkg.json
index 080958b4..00e83595 100644
--- a/config/pkg.json
+++ b/config/pkg.json
@@ -1,4 +1,16 @@
 {
+    "go-xcaddy-aarch64-linux": {
+        "type": "custom"
+    },
+    "go-xcaddy-aarch64-macos": {
+        "type": "custom"
+    },
+    "go-xcaddy-x86_64-linux": {
+        "type": "custom"
+    },
+    "go-xcaddy-x86_64-macos": {
+        "type": "custom"
+    },
     "musl-toolchain-aarch64-linux": {
         "type": "url",
         "url": "https://dl.static-php.dev/static-php-cli/deps/musl-toolchain/aarch64-musl-toolchain.tgz"
@@ -15,6 +27,38 @@
             "nasm-2.16.01/ndisasm.exe": "{php_sdk_path}/bin/ndisasm.exe"
         }
     },
+    "pkg-config-aarch64-linux": {
+        "type": "ghrel",
+        "repo": "static-php/static-php-cli-hosted",
+        "match": "pkg-config-aarch64-linux-musl-1.2.5.txz",
+        "extract-files": {
+            "bin/pkg-config": "{pkg_root_path}/bin/pkg-config"
+        }
+    },
+    "pkg-config-aarch64-macos": {
+        "type": "ghrel",
+        "repo": "static-php/static-php-cli-hosted",
+        "match": "pkg-config-aarch64-darwin.txz",
+        "extract-files": {
+            "bin/pkg-config": "{pkg_root_path}/bin/pkg-config"
+        }
+    },
+    "pkg-config-x86_64-linux": {
+        "type": "ghrel",
+        "repo": "static-php/static-php-cli-hosted",
+        "match": "pkg-config-x86_64-linux-musl-1.2.5.txz",
+        "extract-files": {
+            "bin/pkg-config": "{pkg_root_path}/bin/pkg-config"
+        }
+    },
+    "pkg-config-x86_64-macos": {
+        "type": "ghrel",
+        "repo": "static-php/static-php-cli-hosted",
+        "match": "pkg-config-x86_64-darwin.txz",
+        "extract-files": {
+            "bin/pkg-config": "{pkg_root_path}/bin/pkg-config"
+        }
+    },
     "strawberry-perl-x86_64-win": {
         "type": "url",
         "url": "https://github.com/StrawberryPerl/Perl-Dist-Strawberry/releases/download/SP_5380_5361/strawberry-perl-5.38.0.1-64bit-portable.zip"
@@ -43,30 +87,18 @@
             "upx-*-win64/upx.exe": "{pkg_root_path}/bin/upx.exe"
         }
     },
-    "go-xcaddy-x86_64-linux": {
+    "zig-aarch64-linux": {
         "type": "custom"
     },
-    "go-xcaddy-aarch64-linux": {
-        "type": "custom"
-    },
-    "go-xcaddy-x86_64-macos": {
-        "type": "custom"
-    },
-    "go-xcaddy-aarch64-macos": {
+    "zig-aarch64-macos": {
         "type": "custom"
     },
     "zig-x86_64-linux": {
         "type": "custom"
     },
-    "zig-aarch64-linux": {
-        "type": "custom"
-    },
     "zig-x86_64-macos": {
         "type": "custom"
     },
-    "zig-aarch64-macos": {
-        "type": "custom"
-    },
     "zig-x86_64-win": {
         "type": "custom"
     }
diff --git a/src/SPC/builder/freebsd/BSDBuilder.php b/src/SPC/builder/freebsd/BSDBuilder.php
index dcaa5a2d..985de5d2 100644
--- a/src/SPC/builder/freebsd/BSDBuilder.php
+++ b/src/SPC/builder/freebsd/BSDBuilder.php
@@ -25,10 +25,6 @@ class BSDBuilder extends UnixBuilderBase
         f_putenv('CXX=' . $this->getOption('cxx', 'clang++'));
         // set PATH
         f_putenv('PATH=' . BUILD_ROOT_PATH . '/bin:' . getenv('PATH'));
-        // set PKG_CONFIG
-        f_putenv('PKG_CONFIG=' . BUILD_ROOT_PATH . '/bin/pkg-config');
-        // set PKG_CONFIG_PATH
-        f_putenv('PKG_CONFIG_PATH=' . BUILD_LIB_PATH . '/pkgconfig/');
 
         // set arch (default: current)
         $this->setOptionIfNotExist('arch', php_uname('m'));
diff --git a/src/SPC/doctor/item/PkgConfigCheck.php b/src/SPC/doctor/item/PkgConfigCheck.php
new file mode 100644
index 00000000..0936a606
--- /dev/null
+++ b/src/SPC/doctor/item/PkgConfigCheck.php
@@ -0,0 +1,38 @@
+<?php
+
+declare(strict_types=1);
+
+namespace SPC\doctor\item;
+
+use SPC\doctor\AsCheckItem;
+use SPC\doctor\AsFixItem;
+use SPC\doctor\CheckResult;
+use SPC\doctor\OptionalCheck;
+use SPC\store\PackageManager;
+use SPC\util\PkgConfigUtil;
+
+#[OptionalCheck([self::class, 'optionalCheck'])]
+class PkgConfigCheck
+{
+    public static function optionalCheck(): bool
+    {
+        return PHP_OS_FAMILY !== 'Windows';
+    }
+
+    /** @noinspection PhpUnused */
+    #[AsCheckItem('if pkg-config is installed or built', level: 800)]
+    public function checkPkgConfig(): CheckResult
+    {
+        if (!($pkgconf = PkgConfigUtil::findPkgConfig())) {
+            return CheckResult::fail('pkg-config is not installed', 'install-pkgconfig');
+        }
+        return CheckResult::ok($pkgconf);
+    }
+
+    #[AsFixItem('install-pkgconfig')]
+    public function installPkgConfig(): bool
+    {
+        PackageManager::installPackage('pkg-config');
+        return true;
+    }
+}
diff --git a/src/SPC/toolchain/ToolchainManager.php b/src/SPC/toolchain/ToolchainManager.php
index 3fe48ae1..ff22acae 100644
--- a/src/SPC/toolchain/ToolchainManager.php
+++ b/src/SPC/toolchain/ToolchainManager.php
@@ -7,6 +7,7 @@ namespace SPC\toolchain;
 use SPC\builder\linux\SystemUtil;
 use SPC\exception\WrongUsageException;
 use SPC\util\GlobalEnvManager;
+use SPC\util\PkgConfigUtil;
 use SPC\util\SPCTarget;
 
 class ToolchainManager
@@ -56,6 +57,15 @@ class ToolchainManager
         if (SPCTarget::getLibc() === 'glibc' && SystemUtil::isMuslDist()) {
             throw new WrongUsageException('You are linking against glibc dynamically, which is only supported on glibc distros.');
         }
+
+        // init pkg-config for unix
+        if (is_unix()) {
+            if (($found = PkgConfigUtil::findPkgConfig()) === null) {
+                throw new WrongUsageException('Cannot find pkg-config executable. Please run `doctor` to fix this.');
+            }
+            GlobalEnvManager::putenv("PKG_CONFIG={$found}");
+        }
+
         $toolchain = getenv('SPC_TOOLCHAIN');
         /* @var ToolchainInterface $toolchain */
         $instance = new $toolchain();
diff --git a/src/SPC/util/GlobalEnvManager.php b/src/SPC/util/GlobalEnvManager.php
index 59e4d06c..9f74d2df 100644
--- a/src/SPC/util/GlobalEnvManager.php
+++ b/src/SPC/util/GlobalEnvManager.php
@@ -39,8 +39,8 @@ class GlobalEnvManager
         // Define env vars for unix
         if (is_unix()) {
             self::addPathIfNotExists(BUILD_BIN_PATH);
-            self::putenv('PKG_CONFIG=' . BUILD_BIN_PATH . '/pkg-config');
-            self::putenv('PKG_CONFIG_PATH=' . BUILD_ROOT_PATH . '/lib/pkgconfig');
+            self::addPathIfNotExists(PKG_ROOT_PATH . '/bin');
+            self::putenv('PKG_CONFIG_PATH=' . BUILD_LIB_PATH . '/pkgconfig');
         }
 
         $ini = self::readIniFile();
diff --git a/src/SPC/util/PkgConfigUtil.php b/src/SPC/util/PkgConfigUtil.php
index 41a3b6e2..25e0e1f2 100644
--- a/src/SPC/util/PkgConfigUtil.php
+++ b/src/SPC/util/PkgConfigUtil.php
@@ -14,6 +14,28 @@ use SPC\exception\ExecutionException;
  */
 class PkgConfigUtil
 {
+    /**
+     * Find the pkg-config executable which is compatible with static builds.
+     *
+     * @return null|string Path to pkg-config executable, or null if not found
+     */
+    public static function findPkgConfig(): ?string
+    {
+        // Find pkg-config executable
+        $find_list = [
+            PKG_ROOT_PATH . '/bin/pkg-config',
+            BUILD_BIN_PATH . '/pkg-config',
+        ];
+        $found = null;
+        foreach ($find_list as $file) {
+            if (file_exists($file) && is_executable($file)) {
+                $found = $file;
+                break;
+            }
+        }
+        return $found;
+    }
+
     /**
      * Returns the version of a module.
      * This method uses `pkg-config --modversion` to get the version of the specified module.
diff --git a/src/SPC/util/executor/UnixCMakeExecutor.php b/src/SPC/util/executor/UnixCMakeExecutor.php
index 6bd70677..3e29addf 100644
--- a/src/SPC/util/executor/UnixCMakeExecutor.php
+++ b/src/SPC/util/executor/UnixCMakeExecutor.php
@@ -8,6 +8,7 @@ use SPC\builder\freebsd\library\BSDLibraryBase;
 use SPC\builder\linux\library\LinuxLibraryBase;
 use SPC\builder\macos\library\MacOSLibraryBase;
 use SPC\store\FileSystem;
+use SPC\util\PkgConfigUtil;
 use SPC\util\shell\UnixShell;
 
 /**
@@ -184,6 +185,7 @@ class UnixCMakeExecutor extends Executor
         $cxx = getenv('CCX');
         logger()->debug("making cmake tool chain file for {$os} {$target_arch} with CFLAGS='{$cflags}'");
         $root = BUILD_ROOT_PATH;
+        $pkgConfigExecutable = PkgConfigUtil::findPkgConfig();
         $ccLine = '';
         if ($cc) {
             $ccLine = 'SET(CMAKE_C_COMPILER ' . $cc . ')';
@@ -202,7 +204,7 @@ SET(CMAKE_PREFIX_PATH "{$root}")
 SET(CMAKE_INSTALL_PREFIX "{$root}")
 SET(CMAKE_INSTALL_LIBDIR "lib")
 
-set(PKG_CONFIG_EXECUTABLE "{$root}/bin/pkg-config")
+set(PKG_CONFIG_EXECUTABLE "{$pkgConfigExecutable}")
 list(APPEND PKG_CONFIG_EXECUTABLE "--static")
 set(CMAKE_FIND_ROOT_PATH_MODE_PROGRAM NEVER)
 set(CMAKE_FIND_ROOT_PATH_MODE_LIBRARY ONLY)