diff --git a/src/SPC/builder/unix/library/curl.php b/src/SPC/builder/unix/library/curl.php
index caa97b8c6..8ed6736df 100644
--- a/src/SPC/builder/unix/library/curl.php
+++ b/src/SPC/builder/unix/library/curl.php
@@ -4,6 +4,7 @@
 
 namespace SPC\builder\unix\library;
 
+use SPC\store\FileSystem;
 use SPC\util\executor\UnixCMakeExecutor;
 
 trait curl
@@ -32,8 +33,16 @@ protected function build(): void
             )
             ->build();
 
-        // patch pkgconf
         $this->patchPkgconfPrefix(['libcurl.pc']);
+        // On glibc <2.28 without built-in pthreads, FindThreads sets
+        // INTERFACE_LINK_LIBRARIES to '-lpthread'
+        // curls .pc generator walks and prepends '-l' to each
+        // entry, resulting in -l-lpthread
+        FileSystem::replaceFileRegex(
+            BUILD_LIB_PATH . '/pkgconfig/libcurl.pc',
+            '/-l(-l\S+)/',
+            '$1'
+        );
         shell()->cd(BUILD_LIB_PATH . '/cmake/CURL/')
             ->exec("sed -ie 's|\"/lib/libcurl.a\"|\"" . BUILD_LIB_PATH . "/libcurl.a\"|g' CURLTargets-release.cmake");
     }
diff --git a/src/globals/test-extensions.php b/src/globals/test-extensions.php
index 6db808f63..e7f716b47 100644
--- a/src/globals/test-extensions.php
+++ b/src/globals/test-extensions.php
@@ -14,7 +14,7 @@
 // test php version (8.1 ~ 8.4 available, multiple for matrix)
 $test_php_version = [
     // '8.1',
-    '8.2',
+    // '8.2',
     // '8.3',
     // '8.4',
     '8.5',
@@ -24,11 +24,11 @@
 // test os (macos-15-intel, macos-15, ubuntu-latest, windows-latest are available)
 $test_os = [
     // 'macos-15-intel', // bin/spc for x86_64
-    'macos-15', // bin/spc for arm64
+    // 'macos-15', // bin/spc for arm64
     // 'ubuntu-latest', // bin/spc-alpine-docker for x86_64
-    // 'ubuntu-22.04', // bin/spc-gnu-docker for x86_64
+    'ubuntu-22.04', // bin/spc-gnu-docker for x86_64
     // 'ubuntu-24.04', // bin/spc for x86_64
-    // 'ubuntu-22.04-arm', // bin/spc-gnu-docker for arm64
+    'ubuntu-22.04-arm', // bin/spc-gnu-docker for arm64
     // 'ubuntu-24.04-arm', // bin/spc for arm64
     // 'windows-2022', // .\bin\spc.ps1
     // 'windows-2025',
@@ -50,7 +50,7 @@
 
 // If you want to test your added extensions and libs, add below (comma separated, example `bcmath,openssl`).
 $extensions = match (PHP_OS_FAMILY) {
-    'Linux', 'Darwin' => 'swoole,mongodb',
+    'Linux', 'Darwin' => 'curl,gd',
     'Windows' => 'bcmath,brotli,bz2,ctype,curl,dom,exif,fileinfo,filter,ftp,gd,iconv,intl,mbregex,mbstring,mysqli,mysqlnd,opcache,openssl,pdo,pdo_mysql,pdo_pgsql,pgsql,session,simdjson,simplexml,sodium,sqlite3,tokenizer,xml,xmlreader,xmlwriter,zip,zlib',
 };