fix pkg-config build for macOS sonoma

src/SPC/ConsoleApplication.php

@@ -25,7 +25,7 @@
  */
 final class ConsoleApplication extends Application
 {
-    public const VERSION = '2.1.5';
+    public const VERSION = '2.1.6';
 
     public function __construct()
     {

src/SPC/builder/traits/UnixLibraryTrait.php

@@ -48,7 +48,7 @@ public function getStaticLibFiles(string $style = 'autoconf', bool $recursive =
      * @throws RuntimeException
      * @throws WrongUsageException
      */
-    public function makeAutoconfEnv(string $prefix = null): string
+    public function makeAutoconfEnv(?string $prefix = null): string
     {
         if ($prefix === null) {
             $prefix = str_replace('-', '_', strtoupper(static::NAME));

src/SPC/builder/unix/library/pkgconfig.php

@@ -8,7 +8,7 @@ trait pkgconfig
 {
     protected function build(): void
     {
-        $macos_env = "CFLAGS='{$this->builder->arch_c_flags} -Wimplicit-function-declaration' ";
+        $macos_env = "CFLAGS='{$this->builder->arch_c_flags} -Wimplicit-function-declaration -Wno-int-conversion' ";
         $linux_env = 'LDFLAGS=--static ';
 
         shell()->cd($this->source_dir)

src/SPC/command/BaseCommand.php

@@ -25,7 +25,7 @@ abstract class BaseCommand extends Command
 
     protected OutputInterface $output;
 
-    public function __construct(string $name = null)
+    public function __construct(?string $name = null)
     {
         parent::__construct($name);
         $this->addOption('debug', null, null, 'Enable debug mode');

src/SPC/command/BuildCommand.php

@@ -8,7 +8,7 @@
 
 abstract class BuildCommand extends BaseCommand
 {
-    public function __construct(string $name = null)
+    public function __construct(?string $name = null)
     {
         parent::__construct($name);