tree 0cc813d19a1898feb17395d0f300e144b24efbd3
parent df8bfc52d29d4f7a30d9ed3add6f25d492fc5b9e
author Jason Henline <jhen@google.com> 1473781458 +0000
committer Copybara-Service <copybara-worker@google.com> 1598947475 -0700

[SE] Stop using llvm-config --cxxflags

Summary:
Build configuration was adding $(llvm-config --cxxflags) to the
StreamExecutor CXXFLAGS, but this was causing "-O3" to be passed even
for debug builds, and was making debugging difficult.

The llvm-config call was originally introduced to handle the -fno-rtti
flag because an RTTI StreamExecutor could not link with a no-RTTI LLVM.
This patch converts to using LLVM_ENABLE_RTTI and only adding the
`-fno-rtti` flag if needed, not all the rest of the LLVM CXXFLAGS.

I have tested this with clang-4.0 and gcc-4.8 on Ubuntu. Some work will
probably have to be done to support MSVC.

Reviewers: jlebar

Subscribers: beanz, jprice, parallel_libs-commits, mgorny

Differential Revision: https://reviews.llvm.org/D24474

llvm-svn: 281347
GitOrigin-RevId: 45b467523b34f0ad0fa03bd17a15a294d73ae808