[cfe-dev] libc++abi on linux

[David Chisnall]

On 9 Jul 2012, at 04:00, Ben Pope wrote:

> clang++ -std=c++11 -stdlib=libc++ -stdlibabi=libc++abi -stdlibunwind?=???

Unlike the STL implementation, the ABI and unwind libraries are per-binary.  Generally, the STL implementation will pick one, so you don't need to explicitly specify either unless you are linking the STL implementation itself.

> What does the rest of LLVM/clang community use?

In FreeBSD 9.1 (entering beta right about now), we are shipping libstdc++ and libc++, with libstdc++ linked against either libsupc++ or libcxxrt and libc++ linked against libc++.  This is a preview release of libc++, so to mix it with libstdc++ in the same executable you need to add a libmap.conf entry telling libstdc++ to pick up libcxxrt instead of libsupc++.  In 10.0, we will provide a libstdc++ linked to libcxxrt for legacy compatibility.

All that users need to do is specify -stdlib=libc++.  This will be the default on 10.0, and probably be the default when -std=c++11 before then.

David