diff --git a/bin/spc-gnu-docker b/bin/spc-gnu-docker
index fa84e58c..d96abbc5 100755
--- a/bin/spc-gnu-docker
+++ b/bin/spc-gnu-docker
@@ -12,7 +12,7 @@ DOCKER_EXECUTABLE="docker"
 # shellcheck disable=SC2046
 if [ $(id -u) -ne 0 ]; then
     if ! docker info > /dev/null 2>&1; then
-        if [ "$SPC_USE_SUDO" != "yes" ]; then
+        if [ "$SPC_USE_SUDO" != "yes" ] && [ "$SPC_DOCKER_DEBUG" != "yes" ]; then
             echo "Docker command requires sudo"
             # shellcheck disable=SC2039
             echo -n 'To use sudo to run docker, run "export SPC_USE_SUDO=yes" and run command again'
@@ -145,4 +145,9 @@ echo 'SPC_CMD_VAR_PHP_MAKE_EXTRA_LIBS="-ldl -lpthread -lm -lresolv -lutil -lrt"'
 # shellcheck disable=SC2086
 # shellcheck disable=SC2090
 
-$DOCKER_EXECUTABLE run --rm $INTERACT -e SPC_FIX_DEPLOY_ROOT="$(pwd)" --env-file /tmp/spc-gnu-docker.env $MOUNT_LIST cwcc-spc-gnu-$SPC_USE_ARCH bin/spc $@
+if [ "$SPC_DOCKER_DEBUG" = "yes" ]; then
+    echo -e "\e[033m* Debug mode enabled, run docker in interactive mode.\e[0m"
+    $DOCKER_EXECUTABLE run --rm $INTERACT -e SPC_FIX_DEPLOY_ROOT="$(pwd)" --env-file /tmp/spc-gnu-docker.env $MOUNT_LIST cwcc-spc-gnu-$SPC_USE_ARCH
+else
+    $DOCKER_EXECUTABLE run --rm $INTERACT -e SPC_FIX_DEPLOY_ROOT="$(pwd)" --env-file /tmp/spc-gnu-docker.env $MOUNT_LIST cwcc-spc-gnu-$SPC_USE_ARCH bin/spc $@
+fi
diff --git a/config/env.ini b/config/env.ini
index 652b0fe6..3ef5ba0f 100644
--- a/config/env.ini
+++ b/config/env.ini
@@ -28,7 +28,6 @@
 ;   PATH:                               static-php-cli will add `$BUILD_BIN_PATH` to PATH.
 ;   PKG_CONFIG:                         static-php-cli will set `$BUILD_BIN_PATH/pkg-config` to PKG_CONFIG.
 ;   PKG_CONFIG_PATH:                    static-php-cli will set `$BUILD_LIB_PATH/pkgconfig` to PKG_CONFIG_PATH.
-;   SPC_PHP_DEFAULT_OPTIMIZE_CFLAGS:    the default optimization CFLAGS for compiling php. (if --no-strip option is set: `-g -O0`, else: `-g -Os`)
 ;
 ;   * These vars are only be defined in LinuxBuilder and cannot be changed anywhere:
 ;   SPC_LINUX_DEFAULT_CC:                   the default compiler for linux. (For alpine linux: `gcc`, default: `$GNU_ARCH-linux-musl-gcc`)
@@ -98,7 +97,7 @@ SPC_CMD_VAR_PHP_CONFIGURE_LDFLAGS="-L${BUILD_LIB_PATH}"
 ; LIBS for configuring php
 SPC_CMD_VAR_PHP_CONFIGURE_LIBS="-ldl -lpthread -lm"
 ; EXTRA_CFLAGS for `make` php
-SPC_CMD_VAR_PHP_MAKE_EXTRA_CFLAGS="${SPC_PHP_DEFAULT_OPTIMIZE_CFLAGS} -fno-ident -fPIE -fPIC"
+SPC_CMD_VAR_PHP_MAKE_EXTRA_CFLAGS="-g -fstack-protector-strong -fpic -fpie -Os -D_LARGEFILE_SOURCE -D_FILE_OFFSET_BITS=64 -fno-ident -fPIE -fPIC"
 ; EXTRA_LIBS for `make` php
 SPC_CMD_VAR_PHP_MAKE_EXTRA_LIBS=""
 ; EXTRA_LDFLAGS_PROGRAM for `make` php
@@ -132,7 +131,7 @@ SPC_CMD_VAR_PHP_CONFIGURE_CPPFLAGS="-I${BUILD_INCLUDE_PATH}"
 ; LDFLAGS for configuring php
 SPC_CMD_VAR_PHP_CONFIGURE_LDFLAGS="-L${BUILD_LIB_PATH}"
 ; EXTRA_CFLAGS for `make` php
-SPC_CMD_VAR_PHP_MAKE_EXTRA_CFLAGS="${SPC_PHP_DEFAULT_OPTIMIZE_CFLAGS}"
+SPC_CMD_VAR_PHP_MAKE_EXTRA_CFLAGS="-g -fstack-protector-strong -fpic -fpie -Os -D_LARGEFILE_SOURCE -D_FILE_OFFSET_BITS=64"
 ; EXTRA_LIBS for `make` php
 SPC_CMD_VAR_PHP_MAKE_EXTRA_LIBS="-lresolv"
 ; embed type for php, static (libphp.a) or shared (libphp.dylib)
diff --git a/config/ext.json b/config/ext.json
index 691be764..1cf1dae0 100644
--- a/config/ext.json
+++ b/config/ext.json
@@ -919,15 +919,14 @@
     },
     "xdebug": {
         "type": "external",
+        "source": "xdebug",
+        "target": ["shared"],
         "support": {
             "Windows": "wip",
             "BSD": "no",
             "Darwin": "no",
             "Linux": "wip"
         },
-        "lib-depends": [
-            "xdebug"
-        ],
         "notes": true
     },
     "xhprof": {
diff --git a/config/lib.json b/config/lib.json
index a39409ed..0dae815f 100644
--- a/config/lib.json
+++ b/config/lib.json
@@ -751,12 +751,6 @@
             "libiconv"
         ]
     },
-    "xdebug": {
-        "source": "xdebug",
-        "static-libs-unix": [
-            "xdebug.so"
-        ]
-    },
     "xz": {
         "source": "xz",
         "static-libs-unix": [
diff --git a/config/source.json b/config/source.json
index 553f0527..4a9c3cef 100644
--- a/config/source.json
+++ b/config/source.json
@@ -914,11 +914,9 @@
         }
     },
     "xdebug": {
-        "type": "ghrel",
-        "repo": "xdebug/xdebug",
-        "match": "Source code",
-        "prefer-stable": true,
-        "provide-pre-built": false,
+        "type": "url",
+        "url": "https://pecl.php.net/get/xdebug",
+        "filename": "xdebug.tgz",
         "license": {
             "type": "file",
             "path": "LICENSE"
diff --git a/src/SPC/store/Config.php b/src/SPC/store/Config.php
index 07ed2887..9c00715d 100644
--- a/src/SPC/store/Config.php
+++ b/src/SPC/store/Config.php
@@ -106,6 +106,21 @@ class Config
         return self::$lib;
     }
 
+    /**
+     * @throws WrongUsageException
+     * @throws FileSystemException
+     */
+    public static function getExtTarget(string $name): ?array
+    {
+        if (self::$ext === null) {
+            self::$ext = FileSystem::loadConfigArray('ext');
+        }
+        if (!isset(self::$ext[$name])) {
+            throw new WrongUsageException('ext [' . $name . '] is not supported yet');
+        }
+        return self::$ext[$name]['target'] ?? ['static', 'shared'];
+    }
+
     /**
      * @throws FileSystemException
      * @throws WrongUsageException
diff --git a/src/SPC/util/GlobalEnvManager.php b/src/SPC/util/GlobalEnvManager.php
index 7988244f..8ffd5d05 100644
--- a/src/SPC/util/GlobalEnvManager.php
+++ b/src/SPC/util/GlobalEnvManager.php
@@ -40,9 +40,6 @@ class GlobalEnvManager
             self::putenv('PATH=' . BUILD_ROOT_PATH . '/bin:' . getenv('PATH'));
             self::putenv('PKG_CONFIG=' . BUILD_BIN_PATH . '/pkg-config');
             self::putenv('PKG_CONFIG_PATH=' . BUILD_ROOT_PATH . '/lib/pkgconfig');
-            if ($builder instanceof BuilderBase) {
-                self::putenv('SPC_PHP_DEFAULT_OPTIMIZE_CFLAGS=' . ($builder->getOption('no-strip') ? '-g -O0' : '-g -fstack-protector-strong -fpic -fpie -Os -D_LARGEFILE_SOURCE -D_FILE_OFFSET_BITS=64'));
-            }
         }
 
         // Define env vars for linux