diff -Nur llvm-3.3.src.orig/tools/clang/lib/Driver/ToolChains.cpp llvm-3.3.src/tools/clang/lib/Driver/ToolChains.cpp
--- llvm-3.3.src.orig/tools/clang/lib/Driver/ToolChains.cpp	2013-06-21 20:17:20.000000000 +0900
+++ llvm-3.3.src/tools/clang/lib/Driver/ToolChains.cpp	2013-06-21 20:19:16.000000000 +0900
@@ -1847,6 +1847,9 @@
     getFilePaths().push_back(getDriver().SysRoot + "/usr/lib32");
   else
     getFilePaths().push_back(getDriver().SysRoot + "/usr/lib");
+
+  if (GCCInstallation.isValid())
+    getFilePaths().push_back(GCCInstallation.getInstallPath());
 }
 
 Tool *FreeBSD::buildAssembler() const {