diff --git a/.github/pull_request_template.md b/.github/pull_request_template.md
index fb78849c..af5b7a50 100644
--- a/.github/pull_request_template.md
+++ b/.github/pull_request_template.md
@@ -1,17 +1,12 @@
 ## What does this PR do?
 
+<!-- Please describe the changes made in this PR here. -->
 
 
 ## Checklist before merging
 
-> If your PR involves the changes mentioned below and completed the action, please tick the corresponding option.
-> If a modification is not involved, please skip it directly.
-
-- If you modified `*.php` or `*.json`, run them locally to ensure your changes are valid:
+- If you modified `*.php` or `*.yml`, run them locally to ensure your changes are valid:
   - [ ] `composer cs-fix`
   - [ ] `composer analyse`
   - [ ] `composer test`
-  - [ ] `bin/spc dev:sort-config`
-- If it's an extension or dependency update, please ensure the following:
-  - [ ] Add your test combination to `src/globals/test-extensions.php`.
-  - [ ] If adding new or fixing bugs, add commit message containing `extension test` or `test extensions` to trigger full test suite.
+  - [ ] `bin/spc dev:lint-config`
diff --git a/config/pkg/ext/ext-clickhouse.yml b/config/pkg/ext/ext-clickhouse.yml
new file mode 100644
index 00000000..3e8479bd
--- /dev/null
+++ b/config/pkg/ext/ext-clickhouse.yml
@@ -0,0 +1,19 @@
+ext-clickhouse:
+  type: php-extension
+  artifact:
+    source:
+      type: ghtar
+      repo: iliaal/php_clickhouse
+      extract: php-src/ext/clickhouse
+      prefer-stable: true
+    metadata:
+      license-files: [LICENSE]
+      license: PHP-3.01
+  suggests@unix:
+    - openssl
+  lang: cpp
+  php-extension:
+    os:
+      - Linux
+      - Darwin
+    arg-type@unix: custom
diff --git a/src/Package/Extension/clickhouse.php b/src/Package/Extension/clickhouse.php
new file mode 100644
index 00000000..3e11975f
--- /dev/null
+++ b/src/Package/Extension/clickhouse.php
@@ -0,0 +1,40 @@
+<?php
+
+declare(strict_types=1);
+
+namespace Package\Extension;
+
+use Package\Target\php;
+use StaticPHP\Attribute\Package\BeforeStage;
+use StaticPHP\Attribute\Package\CustomPhpConfigureArg;
+use StaticPHP\Attribute\Package\Extension;
+use StaticPHP\Attribute\PatchDescription;
+use StaticPHP\Package\PackageInstaller;
+use StaticPHP\Package\PhpExtensionPackage;
+use StaticPHP\Util\FileSystem;
+
+#[Extension('clickhouse')]
+class clickhouse extends PhpExtensionPackage
+{
+    #[BeforeStage('php', [php::class, 'buildconfForUnix'], 'ext-clickhouse')]
+    #[PatchDescription('Replace THIS_DIR=`dirname $0` with PHP_EXT_SRCDIR() in config.m4 so include paths resolve to the ext source dir during PHP main configure (dirname $0 returns "." when run from php-src root).')]
+    public function patchBeforeBuildconfUnix(): void
+    {
+        FileSystem::replaceFileRegex(
+            "{$this->getSourceDir()}/config.m4",
+            '/^(\s*)THIS_DIR=.*/m',
+            '$1THIS_DIR=PHP_EXT_SRCDIR()',
+        );
+    }
+
+    #[CustomPhpConfigureArg('Darwin')]
+    #[CustomPhpConfigureArg('Linux')]
+    public function getUnixConfigureArg(bool $shared, PackageInstaller $installer): string
+    {
+        $arg = '--enable-clickhouse' . ($shared ? '=shared' : '');
+        if ($installer->getLibraryPackage('openssl')) {
+            $arg .= ' --enable-clickhouse-openssl';
+        }
+        return $arg;
+    }
+}
diff --git a/src/Package/Target/php/unix.php b/src/Package/Target/php/unix.php
index 2b832fe5..7d4d0063 100644
--- a/src/Package/Target/php/unix.php
+++ b/src/Package/Target/php/unix.php
@@ -352,14 +352,13 @@ trait unix
 
         // ------------- SPC_CMD_VAR_PHP_EMBED_TYPE=static -------------
 
-        // process libphp.a for static embed
-        if (!file_exists("{$package->getLibDir()}/libphp.a")) {
-            return;
+        // process libphp.a for static embed (only when present)
+        if (file_exists("{$package->getLibDir()}/libphp.a")) {
+            $ar = getenv('AR') ?: 'ar';
+            $libphp_a = "{$package->getLibDir()}/libphp.a";
+            shell()->exec("{$ar} -t {$libphp_a} | grep '\\.a$' | xargs -n1 {$ar} d {$libphp_a}");
+            UnixUtil::exportDynamicSymbols($libphp_a);
         }
-        $ar = getenv('AR') ?: 'ar';
-        $libphp_a = "{$package->getLibDir()}/libphp.a";
-        shell()->exec("{$ar} -t {$libphp_a} | grep '\\.a$' | xargs -n1 {$ar} d {$libphp_a}");
-        UnixUtil::exportDynamicSymbols($libphp_a);
 
         // deploy embed php scripts
         $package->runStage([$this, 'patchUnixEmbedScripts']);
@@ -508,7 +507,8 @@ trait unix
         if (file_exists(BUILD_BIN_PATH . '/php-config')) {
             logger()->debug('Patching php-config prefix and libs order');
             $php_config_str = FileSystem::readFile(BUILD_BIN_PATH . '/php-config');
-            $php_config_str = str_replace('prefix=""', 'prefix="' . BUILD_ROOT_PATH . '"', $php_config_str);
+            // anchor to start-of-line so we don't also match `program_prefix=""`
+            $php_config_str = preg_replace('/^prefix=""/m', 'prefix="' . BUILD_ROOT_PATH . '"', $php_config_str);
             // move mimalloc to the beginning of libs
             $php_config_str = preg_replace('/(libs=")(.*?)\s*(' . preg_quote(BUILD_LIB_PATH, '/') . '\/mimalloc\.o)\s*(.*?)"/', '$1$3 $2 $4"', $php_config_str);
             // move lstdc++ to the end of libs
diff --git a/src/StaticPHP/Package/PhpExtensionPackage.php b/src/StaticPHP/Package/PhpExtensionPackage.php
index 1201496d..fef88efd 100644
--- a/src/StaticPHP/Package/PhpExtensionPackage.php
+++ b/src/StaticPHP/Package/PhpExtensionPackage.php
@@ -306,7 +306,7 @@ class PhpExtensionPackage extends Package
         shell()->cd($package->getSourceDir())
             ->setEnv($env)
             ->exec(
-                './configure ' . $this->getPhpConfigureArg(SystemTarget::getCurrentPlatformString(), true) .
+                './configure ' . $this->getPhpConfigureArg(SystemTarget::getTargetOS(), true) .
                 ' --with-php-config=' . BUILD_BIN_PATH . '/php-config ' .
                 "--enable-shared --disable-static {$phpvars}"
             );
diff --git a/src/globals/test-extensions.php b/src/globals/test-extensions.php
index 8281f88b..2e6e807e 100644
--- a/src/globals/test-extensions.php
+++ b/src/globals/test-extensions.php
@@ -50,7 +50,7 @@ $prefer_pre_built = false;
 
 // If you want to test your added extensions and libs, add below (comma separated, example `bcmath,openssl`).
 $extensions = match (PHP_OS_FAMILY) {
-    'Linux', 'Darwin' => 'curl,swoole',
+    'Linux', 'Darwin' => 'openssl,zstd,clickhouse',
     'Windows' => 'intl',
 };