[PATCH] Recognize "CC" and "clang-CC" as C++ compiler aliases on FreeBSD

[Dimitry Andric]

Hi mcrosier, joerg,

For a few years now, FreeBSD has been carrying around a patch to recognize "CC" and "clang-CC" as progname aliases for g++ mode.  I would really like to get this into upstreamed, to eliminate as many custom patches as I can.

I've just put the FreeBSD specific part between #if __FreeBSD__ delimiters, but I suspect other OSes with case sensitive filesystems, and a historic usage of CC as g++ aliases will also want to use this.  Those can add additional defines later on.

http://reviews.llvm.org/D7164

Files:
  tools/clang/tools/driver/driver.cpp

Index: tools/clang/tools/driver/driver.cpp
===================================================================
--- tools/clang/tools/driver/driver.cpp
+++ tools/clang/tools/driver/driver.cpp
@@ -213,11 +213,17 @@
       {"clang", nullptr},
       {"clang++", "--driver-mode=g++"},
       {"clang-c++", "--driver-mode=g++"},
+#if defined(__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"},
+#if defined(__FreeBSD__)
+      {"CC", "--driver-mode=g++"},
+#endif
       {"cc", nullptr},
       {"cpp", "--driver-mode=cpp"},
       {"cl", "--driver-mode=cl"},

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