also only do that for macos (saves build time)

Author: henderkes

src/SPC/builder/macos/MacOSBuilder.php

@@ -267,7 +267,7 @@ protected function buildEmbed(): void
         $vars = SystemUtil::makeEnvVarString($this->getMakeExtraVars());
         $concurrency = getenv('SPC_CONCURRENCY') ? '-j' . getenv('SPC_CONCURRENCY') : '';
         shell()->cd(SOURCE_PATH . '/php-src')
-            ->exec("make {$concurrency} INSTALL_ROOT=" . BUILD_ROOT_PATH . " {$vars} install");
+            ->exec("make {$concurrency} INSTALL_ROOT=" . BUILD_ROOT_PATH . " {$vars} install-sapi install-build install-headers install-programs");
 
         if (getenv('SPC_CMD_VAR_PHP_EMBED_TYPE') === 'static') {
             $AR = getenv('AR') ?: 'ar';