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Add default C++ ABI libname and include paths for FreeBSD

Description

Add default C++ ABI libname and include paths for FreeBSD

Summary:
As noted in a discussion about testing the LLVM 6.0.0 release candidates
(with libc++) for FreeBSD, many tests turned out to fail with
"exception_ptr not yet implemented". This was because libc++ did not
choose the correct C++ ABI library, and therefore it fell back to the
exception_fallback.ipp header.

Since FreeBSD 10.x, we have been using libcxxrt as our C++ ABI library,
and its headers have always been installed in /usr/include/c++/v1,
together with the (system) libc++ headers. (Older versions of FreeBSD
used GNU libsupc++ by default, but these are now unsupported.)

Therefore, if we are building libc++ for FreeBSD, set:

  • LIBCXX_CXX_ABI_LIBNAME to "libcxxrt"
  • LIBCXX_CXX_ABI_INCLUDE_PATHS to "/usr/include/c++/v1"

by default.

Reviewers: emaste, EricWF, mclow.lists

Reviewed By: EricWF

Subscribers: mgorny, cfe-commits, krytarowski

Differential Revision: https://reviews.llvm.org/D43166

Details

Committed
dimFeb 11 2018, 2:31 PM
Reviewer
EricWF
Differential Revision
D43166: Add default C++ ABI libname and include paths for FreeBSD
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