diff --git a/src/SPC/builder/unix/library/ngtcp2.php b/src/SPC/builder/unix/library/ngtcp2.php
index 644bab4e..9c9919d8 100644
--- a/src/SPC/builder/unix/library/ngtcp2.php
+++ b/src/SPC/builder/unix/library/ngtcp2.php
@@ -4,6 +4,8 @@ declare(strict_types=1);
 
 namespace SPC\builder\unix\library;
 
+use SPC\builder\linux\library\LinuxLibraryBase;
+use SPC\builder\macos\library\MacOSLibraryBase;
 use SPC\exception\FileSystemException;
 use SPC\exception\RuntimeException;
 use SPC\exception\WrongUsageException;
@@ -19,17 +21,23 @@ trait ngtcp2
     protected function build(): void
     {
         UnixAutoconfExecutor::create($this)
-            ->optionalLib('openssl', fn ($lib) => implode(' ', [
+            ->optionalLib('openssl', fn (LinuxLibraryBase|MacOSLibraryBase $lib) => implode(' ', [
                 '--with-openssl=yes',
+                "OPENSSL_LIBS=\"{$lib->getStaticLibFiles()}\"",
+                "OPENSSL_CFLAGS=\"-I{$lib->getIncludeDir()}\"",
             ]), '--with-openssl=no')
             ->optionalLib('libev', ...ac_with_args('libev', true))
             ->optionalLib('nghttp3', ...ac_with_args('libnghttp3', true))
             ->optionalLib('jemalloc', ...ac_with_args('jemalloc', true))
             ->optionalLib(
                 'brotli',
-                fn ($lib) => implode(' ', [
-                    '--with-libbrotlidec=yes',
+                fn (LinuxLibraryBase|MacOSLibraryBase $lib) => implode(' ', [
+                    '--with-brotlidec=yes',
+                    "LIBBROTLIDEC_CFLAGS=\"-I{$lib->getIncludeDir()}\"",
+                    "LIBBROTLIDEC_LIBS=\"{$lib->getStaticLibFiles()}\"",
                     '--with-libbrotlienc=yes',
+                    "LIBBROTLIENC_CFLAGS=\"-I{$lib->getIncludeDir()}\"",
+                    "LIBBROTLIENC_LIBS=\"{$lib->getStaticLibFiles()}\"",
                 ])
             )
             ->appendEnv(['PKG_CONFIG' => '$PKG_CONFIG --static'])