turn pkg-config into a package instead of a library

src/SPC/doctor/item/PkgConfigCheck.php

@@ -0,0 +1,45 @@
+<?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\store\pkg\PkgConfig;
+
+#[OptionalCheck([self::class, 'optionalCheck'])]
+class PkgConfigCheck
+{
+    public static function optionalCheck(): bool
+    {
+        return PHP_OS_FAMILY !== 'Windows';
+    }
+
+    /** @noinspection PhpUnused */
+    #[AsCheckItem('if pkg-config is installed', level: 800)]
+    public function checkPkgConfig(): CheckResult
+    {
+        if (PkgConfig::isInstalled()) {
+            return CheckResult::ok();
+        }
+        return CheckResult::fail('pkg-config is not installed', 'install-pkgconfig');
+    }
+
+    #[AsFixItem('install-pkgconfig')]
+    public function installPkgConfig(): bool
+    {
+        $arch = arch2gnu(php_uname('m'));
+        $os = match (PHP_OS_FAMILY) {
+            'Windows' => 'win',
+            'Darwin' => 'macos',
+            'BSD' => 'freebsd',
+            default => 'linux',
+        };
+        PackageManager::installPackage("pkg-config-{$arch}-{$os}");
+        return PkgConfig::isInstalled();
+    }
+}