refactor to pkg-config and add some add-on libs for gd

src/SPC/builder/macos/library/libiconv.php

@@ -20,28 +20,9 @@ declare(strict_types=1);
 
 namespace SPC\builder\macos\library;
 
-use SPC\exception\RuntimeException;
-
 class libiconv extends MacOSLibraryBase
 {
+    use \SPC\builder\unix\library\libiconv;
+
     public const NAME = 'libiconv';
-
-    /**
-     * @throws RuntimeException
-     */
-    public function build()
-    {
-        [,,$destdir] = SEPARATED_PATH;
-
-        shell()->cd($this->source_dir)
-            ->exec(
-                "{$this->builder->configure_env} ./configure " .
-                '--enable-static ' .
-                '--disable-shared ' .
-                '--prefix='
-            )
-            ->exec('make clean')
-            ->exec("make -j{$this->builder->concurrency}")
-            ->exec('make install DESTDIR=' . $destdir);
-    }
 }