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<body><span class="vcard"><a class="email" href="mailto:jfonseca@vmware.com" title="Jose Fonseca <jfonseca@vmware.com>"> <span class="fn">Jose Fonseca</span></a>
</span> changed
<a class="bz_bug_link
bz_status_RESOLVED bz_closed"
title="RESOLVED NOTOURBUG - lp_bld_debug.cpp:141: undefined reference to `llvm::sys::getProcessTriple()'"
href="https://bugs.freedesktop.org/show_bug.cgi?id=92629">bug 92629</a>
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<th>What</th>
<th>Removed</th>
<th>Added</th>
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<td style="text-align:right;">Status</td>
<td>NEW
</td>
<td>RESOLVED
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<td style="text-align:right;">Resolution</td>
<td>---
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<td>NOTOURBUG
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<b><a class="bz_bug_link
bz_status_RESOLVED bz_closed"
title="RESOLVED NOTOURBUG - lp_bld_debug.cpp:141: undefined reference to `llvm::sys::getProcessTriple()'"
href="https://bugs.freedesktop.org/show_bug.cgi?id=92629#c1">Comment # 1</a>
on <a class="bz_bug_link
bz_status_RESOLVED bz_closed"
title="RESOLVED NOTOURBUG - lp_bld_debug.cpp:141: undefined reference to `llvm::sys::getProcessTriple()'"
href="https://bugs.freedesktop.org/show_bug.cgi?id=92629">bug 92629</a>
from <span class="vcard"><a class="email" href="mailto:jfonseca@vmware.com" title="Jose Fonseca <jfonseca@vmware.com>"> <span class="fn">Jose Fonseca</span></a>
</span></b>
<pre>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:
<a href="http://allanmcrae.com/2015/06/the-case-of-gcc-5-1-and-the-two-c-abis/">http://allanmcrae.com/2015/06/the-case-of-gcc-5-1-and-the-two-c-abis/</a>
<a href="https://www.reddit.com/r/cpp/comments/3b2glr/why_clang_cant_use_the_new_gcc_5_cxx11_abi/">https://www.reddit.com/r/cpp/comments/3b2glr/why_clang_cant_use_the_new_gcc_5_cxx11_abi/</a>
And there's even a LLVM/clang bug filed:
<a href="https://llvm.org/bugs/show_bug.cgi?id=23529">https://llvm.org/bugs/show_bug.cgi?id=23529</a></pre>
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