fix attempted ar deletions when building shared libphp

Author: henderkes

src/SPC/builder/macos/MacOSBuilder.php

@@ -274,8 +274,12 @@ protected function buildEmbed(): void
         $vars = SystemUtil::makeEnvVarString($this->getMakeExtraVars());
 
         shell()->cd(SOURCE_PATH . '/php-src')
-            ->exec(getenv('SPC_CMD_PREFIX_PHP_MAKE') . ' INSTALL_ROOT=' . BUILD_ROOT_PATH . " {$vars} install")
-            ->exec('ar -t ' . BUILD_LIB_PATH . "/libphp.a | grep '\\.a$' | xargs -n1 ar d " . BUILD_LIB_PATH . '/libphp.a');
+            ->exec(getenv('SPC_CMD_PREFIX_PHP_MAKE') . ' INSTALL_ROOT=' . BUILD_ROOT_PATH . " {$vars} install");
+
+        if (getenv('SPC_CMD_VAR_PHP_EMBED_TYPE') === 'static') {
+            shell()->cd(SOURCE_PATH . '/php-src')
+                ->exec('ar -t ' . BUILD_LIB_PATH . "/libphp.a | grep '\\.a$' | xargs -n1 ar d " . BUILD_LIB_PATH . '/libphp.a');
+        }
         $this->patchPhpScripts();
     }