Implement attr, brotli, bzip2 build for unix

src/Package/Artifact/attr.php

@@ -0,0 +1,23 @@
+<?php
+
+declare(strict_types=1);
+
+namespace Package\Artifact;
+
+use StaticPHP\Artifact\Artifact;
+use StaticPHP\Attribute\Artifact\AfterSourceExtract;
+use StaticPHP\Attribute\PatchDescription;
+use StaticPHP\Util\SourcePatcher;
+use StaticPHP\Util\System\LinuxUtil;
+
+class attr
+{
+    #[AfterSourceExtract('attr')]
+    #[PatchDescription('Patch attr for Alpine Linux (musl) and macOS - gethostname declaration')]
+    public function patchAttrForAlpine(Artifact $artifact): void
+    {
+        if (PHP_OS_FAMILY === 'Darwin' || PHP_OS_FAMILY === 'Linux' && LinuxUtil::isMuslDist()) {
+            SourcePatcher::patchFile('attr_alpine_gethostname.patch', $artifact->getSourceDir());
+        }
+    }
+}

src/Package/Artifact/bzip2.php

@@ -0,0 +1,24 @@
+<?php
+
+declare(strict_types=1);
+
+namespace Package\Artifact;
+
+use StaticPHP\Artifact\Artifact;
+use StaticPHP\Attribute\Artifact\AfterSourceExtract;
+use StaticPHP\Attribute\PatchDescription;
+use StaticPHP\Util\FileSystem;
+
+class bzip2
+{
+    #[AfterSourceExtract('bzip2')]
+    #[PatchDescription('Patch bzip2 Makefile to add -fPIC flag for position-independent code')]
+    public function patchBzip2Makefile(Artifact $artifact): void
+    {
+        FileSystem::replaceFileStr(
+            $artifact->getSourceDir() . '/Makefile',
+            'CFLAGS=-Wall',
+            'CFLAGS=-fPIC -Wall'
+        );
+    }
+}