don't download libpng, zlib, brotli, as we already build them

Author: henderkes

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

@@ -18,8 +18,8 @@ public function patchBeforeBuild(): bool
         }
         FileSystem::replaceFileStr(
             $this->source_dir . '/deps.sh',
-            'return 0',
-            '# return 0',
+            ['return 0', 'download_github third_party/brotli', 'download_github third_party/zlib', 'download_github third_party/libpng'],
+            ['# return 0', '# download_github third_party/brotli', '# download_github third_party/zlib', '# download_github third_party/libpng'],
         );
         shell()->cd($this->source_dir)
             ->exec('./deps.sh');

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

@@ -18,7 +18,7 @@ trait libtiff
      */
     protected function build(): void
     {
-        $libcpp = SPCTarget::getTargetOS() === 'Darwin' ? '-lc++' : '-lstdc++';
+        $libcpp = SPCTarget::getTargetOS() === 'Linux' ? '-lstdc++' : '-lc++';
         FileSystem::replaceFileStr($this->source_dir . '/configure', '-lwebp', '-lwebp -lsharpyuv');
         FileSystem::replaceFileStr($this->source_dir . '/configure', '-l"$lerc_lib_name"', '-l"$lerc_lib_name" ' . $libcpp);
         UnixAutoconfExecutor::create($this)