Index: contrib/llvm/tools/clang/lib/Driver/ToolChains.cpp
===================================================================
--- contrib/llvm/tools/clang/lib/Driver/ToolChains.cpp	(revision 278161)
+++ contrib/llvm/tools/clang/lib/Driver/ToolChains.cpp	(working copy)
@@ -2067,6 +2067,7 @@
          getTriple().getArch() == llvm::Triple::armeb ||
          getTriple().getArch() == llvm::Triple::thumb ||
          getTriple().getArch() == llvm::Triple::thumbeb ||
+         getTriple().getArch() == llvm::Triple::mips64 ||
          getTriple().getArch() == llvm::Triple::ppc ||
          getTriple().getArch() == llvm::Triple::ppc64 ||
          getTriple().getArch() == llvm::Triple::ppc64le ||
@@ -2438,7 +2439,8 @@
   // When targeting 32-bit platforms, look for '/usr/lib32/crt1.o' and fall
   // back to '/usr/lib' if it doesn't exist.
   if ((Triple.getArch() == llvm::Triple::x86 ||
-       Triple.getArch() == llvm::Triple::ppc) &&
+       Triple.getArch() == llvm::Triple::ppc ||
+       Triple.getArch() == llvm::Triple::mips) &&
       llvm::sys::fs::exists(getDriver().SysRoot + "/usr/lib32/crt1.o"))
     getFilePaths().push_back(getDriver().SysRoot + "/usr/lib32");
   else
Index: share/mk/src.opts.mk
===================================================================
--- share/mk/src.opts.mk	(revision 278161)
+++ share/mk/src.opts.mk	(working copy)
@@ -204,7 +204,7 @@
 # If the compiler is not C++11 capable, disable clang and use gcc instead.
 __DEFAULT_YES_OPTIONS+=GCC GCC_BOOTSTRAP GNUCXX
 __DEFAULT_NO_OPTIONS+=CLANG CLANG_BOOTSTRAP CLANG_FULL CLANG_IS_CC
-.elif ${__T} == "amd64" || ${__T} == "i386"
+.elif ${__T} == "amd64" || ${__T} == "i386" || ${__T} == "mips64"
 # On x86, clang is enabled, and will be installed as the default cc.
 __DEFAULT_YES_OPTIONS+=CLANG CLANG_BOOTSTRAP CLANG_FULL CLANG_IS_CC
 __DEFAULT_NO_OPTIONS+=GCC GCC_BOOTSTRAP GNUCXX