diff options
Diffstat (limited to 'lib/Driver/Tools.cpp')
| -rw-r--r-- | lib/Driver/Tools.cpp | 6 |
1 files changed, 6 insertions, 0 deletions
diff --git a/lib/Driver/Tools.cpp b/lib/Driver/Tools.cpp index c54ced2d1d..2fb865e020 100644 --- a/lib/Driver/Tools.cpp +++ b/lib/Driver/Tools.cpp @@ -1459,6 +1459,12 @@ void Clang::ConstructJob(Compilation &C, const JobAction &JA, if (types::getPreprocessedType(InputType) != types::TY_INVALID) AddPreprocessingOptions(D, Args, CmdArgs, Output, Inputs); + // Don't warn about "clang -c -DPIC -fPIC test.i" because libtool.m4 assumes + // that "The compiler can only warn and ignore the option if not recognized". + // When building with ccache, it will pass -D options to clang even on + // preprocessed inputs and configure concludes that -fPIC is not supported. + Args.ClaimAllArgs(options::OPT_D); + // Manually translate -O to -O2 and -O4 to -O3; let clang reject // others. if (Arg *A = Args.getLastArg(options::OPT_O_Group)) { |