| Summary: | lp_bld_debug.cpp:141: undefined reference to `llvm::sys::getProcessTriple()' | ||
|---|---|---|---|
| Product: | Mesa | Reporter: | Vinson Lee <vlee> |
| Component: | Mesa core | Assignee: | mesa-dev |
| Status: | RESOLVED NOTOURBUG | QA Contact: | mesa-dev |
| Severity: | normal | ||
| Priority: | medium | CC: | jfonseca, tstellar |
| Version: | git | ||
| Hardware: | x86-64 (AMD64) | ||
| OS: | Linux (All) | ||
| Whiteboard: | |||
| i915 platform: | i915 features: | ||
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Description
Vinson Lee
2015-10-23 03:29:40 UTC
Thanks Vinson. I can repro this on Ubuntu 15.10 doing CC=clang CXX=clang++ scons lp_test_arit If I do nm -u build/linux-x86_64-debug/gallium/auxiliary/gallivm/lp_bld_debug.os with G++ I get U _ZN4llvm3sys16getProcessTripleB5cxx11Ev where as with Clang I get _ZN4llvm3sys16getProcessTripleEv If I run both through c++filt I get with g++ U llvm::sys::getProcessTriple[abi:cxx11]() whereas with clang I get U llvm::sys::getProcessTriple() In other words, clang is not emitting cxx11 abi symbols, when g++ is. This seems to be a known problem: http://allanmcrae.com/2015/06/the-case-of-gcc-5-1-and-the-two-c-abis/ https://www.reddit.com/r/cpp/comments/3b2glr/why_clang_cant_use_the_new_gcc_5_cxx11_abi/ And there's even a LLVM/clang bug filed: https://llvm.org/bugs/show_bug.cgi?id=23529 |
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