add cflags and ldflags to frankenphp build

Author: henderkes

src/SPC/builder/unix/UnixBuilderBase.php

@@ -282,8 +282,8 @@ protected function buildFrankenphp(): void
         $config = (new SPCConfigUtil($this))->config($this->ext_list, $this->lib_list);
         $env = [
             'CGO_ENABLED' => '1',
-            'CGO_CFLAGS' => $config['cflags'],
-            'CGO_LDFLAGS' => "{$staticFlags} {$config['ldflags']} {$config['libs']} {$lrt}",
+            'CGO_CFLAGS' => $this->arch_c_flags . ' ' . $config['cflags'],
+            'CGO_LDFLAGS' => $this->arch_ld_flags . " {$staticFlags} {$config['ldflags']} {$config['libs']} {$lrt} -lgcov",
             'XCADDY_GO_BUILD_FLAGS' => '-buildmode=pie ' .
                 '-ldflags \"-linkmode=external ' . $extLdFlags . ' ' . $debugFlags .
                 '-X \'github.com/caddyserver/caddy/v2.CustomVersion=FrankenPHP ' .