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freebsd-src/tools/build/options/WITH_LLVM_CXXFILT

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Add WITH_LLVM_CXXFILT option to install llvm-cxxfilt as c++filt Since elftoolchain's cxxfilt is rather far behind on features, and we ran into several bugs, add an option to use llvm-cxxfilt as an drop-in replacement. It supports the same options as elftoolchain cxxfilt, though it doesn't have support for old ARM (C++ Annotated Reference Manual, not the CPU) and GNU v2 manglings. But these are irrelevant in 2020. Note: as we already compile the required libraries as part of libllvm, this will not add any significant build time either. PR: 250702 Reviewed by: emaste, yuri Differential Revision: https://reviews.freebsd.org/D27071 MFC after: 2 weeks
2020-11-03 19:57:28 +00:00
Install LLVM's llvm-cxxfilt as c++filt, instead of ELF Tool Chain's cxxfilt.
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