clang_env = {
    "CC": "/usr/local/bin/clang",
    "GCOV": "/dev/null",
    "ASAN_SYMBOLIZER_PATH": "/usr/local/bin/llvm-symbolizer",
    "MSAN_SYMBOLIZER_PATH": "/usr/local/bin/llvm-symbolizer",
    "TSAN_SYMBOLIZER_PATH": "/usr/local/bin/llvm-symbolizer",
    "UBSAN_SYMBOLIZER_PATH": "/usr/local/bin/llvm-symbolizer",
    "LD_LIBRARY_PATH": "/usr/local/lib",
}