Index: lib/Driver/ToolChain.cpp
===================================================================
--- lib/Driver/ToolChain.cpp
+++ lib/Driver/ToolChain.cpp
@@ -105,11 +105,17 @@
       {"clang", nullptr},
       {"clang++", "--driver-mode=g++"},
       {"clang-c++", "--driver-mode=g++"},
+#ifdef __FreeBSD__
+      {"clang-CC", "--driver-mode=g++"},
+#endif
       {"clang-cc", nullptr},
       {"clang-cpp", "--driver-mode=cpp"},
       {"clang-g++", "--driver-mode=g++"},
       {"clang-gcc", nullptr},
       {"clang-cl", "--driver-mode=cl"},
+#ifdef __FreeBSD__
+      {"CC", "--driver-mode=g++"},
+#endif
       {"cc", nullptr},
       {"cpp", "--driver-mode=cpp"},
       {"cl", "--driver-mode=cl"},