diff --git a/config/ext.json b/config/ext.json
index f60637f4..85139f1f 100644
--- a/config/ext.json
+++ b/config/ext.json
@@ -169,14 +169,14 @@
         "arg-type": "custom",
         "ext-depends": [
             "mbstring"
+        ],
+        "lib-depends": [
+            "onig"
         ]
     },
     "mbstring": {
         "type": "builtin",
-        "arg-type": "custom",
-        "lib-depends": [
-            "onig"
-        ]
+        "arg-type": "custom"
     },
     "memcache": {
         "type": "external",
diff --git a/src/SPC/builder/Extension.php b/src/SPC/builder/Extension.php
index 922d4f3d..21f0f574 100644
--- a/src/SPC/builder/Extension.php
+++ b/src/SPC/builder/Extension.php
@@ -163,6 +163,35 @@ class Extension
         return false;
     }
 
+    /**
+     * Run compile check if build target is cli
+     * If you need to run some check, overwrite this or add your assert in src/globals/tests/{extension_name}.php
+     * If check failed, throw RuntimeException
+     *
+     * @throws RuntimeException
+     */
+    public function runCliCheck(): void
+    {
+        [$ret] = shell()->execWithResult(BUILD_ROOT_PATH . '/bin/php --ri "' . $this->getDistName() . '"', false);
+        if ($ret !== 0) {
+            throw new RuntimeException('extension ' . $this->getName() . ' failed compile check: php-cli returned ' . $ret);
+        }
+
+        if (file_exists(ROOT_DIR . '/src/globals/tests/' . $this->getName() . '.php')) {
+            // Trim additional content & escape special characters to allow inline usage
+            $test = str_replace(
+                ['<?php', 'declare(strict_types=1);', "\n", '"', '$'],
+                ['', '', '', '\"', '\$'],
+                file_get_contents(ROOT_DIR . '/src/globals/tests/' . $this->getName() . '.php')
+            );
+
+            [$ret] = shell()->execWithResult(BUILD_ROOT_PATH . '/bin/php -r "' . trim($test) . '"');
+            if ($ret !== 0) {
+                throw new RuntimeException('extension ' . $this->getName() . ' failed sanity check');
+            }
+        }
+    }
+
     /**
      * @throws RuntimeException
      */
diff --git a/src/SPC/builder/extension/mbregex.php b/src/SPC/builder/extension/mbregex.php
index 6a4d1457..0301557c 100644
--- a/src/SPC/builder/extension/mbregex.php
+++ b/src/SPC/builder/extension/mbregex.php
@@ -5,18 +5,25 @@ declare(strict_types=1);
 namespace SPC\builder\extension;
 
 use SPC\builder\Extension;
+use SPC\exception\RuntimeException;
 use SPC\util\CustomExt;
 
 #[CustomExt('mbregex')]
 class mbregex extends Extension
 {
-    public function getDistName(): string
-    {
-        return 'mbstring';
-    }
-
     public function getConfigureArg(): string
     {
         return '';
     }
+
+    /**
+     * mbregex is not an extension, we need to overwrite the default check.
+     */
+    public function runCliCheck(): void
+    {
+        [$ret] = shell()->execWithResult(BUILD_ROOT_PATH . '/bin/php --ri "mbstring" | grep regex', false);
+        if ($ret !== 0) {
+            throw new RuntimeException('extension ' . $this->getName() . ' failed compile check: compiled php-cli mbstring extension does not contain regex !');
+        }
+    }
 }
diff --git a/src/SPC/builder/traits/UnixBuilderTrait.php b/src/SPC/builder/traits/UnixBuilderTrait.php
index 2d0d43d2..3fead06f 100644
--- a/src/SPC/builder/traits/UnixBuilderTrait.php
+++ b/src/SPC/builder/traits/UnixBuilderTrait.php
@@ -66,24 +66,7 @@ trait UnixBuilderTrait
 
             foreach ($this->exts as $ext) {
                 logger()->debug('testing ext: ' . $ext->getName());
-                [$ret] = shell()->execWithResult(BUILD_ROOT_PATH . '/bin/php --ri "' . $ext->getDistName() . '"', false);
-                if ($ret !== 0) {
-                    throw new RuntimeException('extension ' . $ext->getName() . ' failed compile check');
-                }
-
-                if (file_exists(ROOT_DIR . '/src/globals/tests/' . $ext->getName() . '.php')) {
-                    // Trim additional content & escape special characters to allow inline usage
-                    $test = str_replace(
-                        ['<?php', 'declare(strict_types=1);', "\n", '"', '$'],
-                        ['', '', '', '\"', '\$'],
-                        file_get_contents(ROOT_DIR . '/src/globals/tests/' . $ext->getName() . '.php')
-                    );
-
-                    [$ret] = shell()->execWithResult(BUILD_ROOT_PATH . '/bin/php -r "' . trim($test) . '"');
-                    if ($ret !== 0) {
-                        throw new RuntimeException('extension ' . $ext->getName() . ' failed sanity check');
-                    }
-                }
+                $ext->runCliCheck();
             }
         }