building shared libphp.so on musl is really pointless and should be an error, since static compilations cannot load it

Author: henderkes

src/SPC/builder/linux/LinuxBuilder.php

@@ -139,6 +139,9 @@ public function buildPHP(int $build_target = BUILD_TARGET_NONE): void
         }
 
         $embed_type = getenv('SPC_CMD_VAR_PHP_EMBED_TYPE') ?: 'static';
+        if ($embed_type !== 'static' && getenv('SPC_LIBC') === 'musl') {
+            throw new RuntimeException('Musl libc does not support dynamic linking of PHP embed!');
+        }
         shell()->cd(SOURCE_PATH . '/php-src')
             ->exec(
                 getenv('SPC_CMD_PREFIX_PHP_CONFIGURE') . ' ' .
@@ -335,6 +338,9 @@ protected function buildEmbed(): void
             }
             chdir($cwd);
         }
+        if (!$this->getOption('no-strip', false)) {
+            shell()->cd(SOURCE_PATH . '/php-src/sapi/cli')->exec('strip --strip-all php');
+        }
         $this->patchPhpScripts();
     }
 

src/SPC/builder/unix/UnixBuilderBase.php

@@ -327,17 +327,19 @@ protected function buildFrankenphp(): void
         $debugFlags = $this->getOption('no-strip') ? "'-w -s' " : '';
         $extLdFlags = "-extldflags '-pie'";
         $muslTags = '';
+        $staticFlags = '';
         if (PHP_OS_FAMILY === 'Linux' && getenv('SPC_LIBC') === 'musl') {
             $extLdFlags = "-extldflags '-static-pie -Wl,-z,stack-size=0x80000'";
             $muslTags = 'static_build,';
+            $staticFlags = '-static -static-pie';
         }
 
         $config = (new SPCConfigUtil($this))->config($this->ext_list, $this->lib_list, with_dependencies: true);
 
         $env = [
             'CGO_ENABLED' => '1',
             'CGO_CFLAGS' => $config['cflags'],
-            'CGO_LDFLAGS' => "{$config['ldflags']} {$config['libs']} {$lrt}",
+            'CGO_LDFLAGS' => "$staticFlags {$config['ldflags']} {$config['libs']} {$lrt}",
             'XCADDY_GO_BUILD_FLAGS' => '-buildmode=pie ' .
                 '-ldflags \"-linkmode=external ' . $extLdFlags . ' ' . $debugFlags .
                 '-X \'github.com/caddyserver/caddy/v2.CustomVersion=FrankenPHP ' .