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<p>Hi Riyaz,</p>
<p><br>
</p>
<p>I'm always building LLVM OpenMP runtime with latest LLVM and
Clang (from git master) and I on every of my Linux machines I
never had to set any additional flags. What system are you
building it on?</p>
<br>
<div class="moz-cite-prefix">On 09/03/16 05:07, Riyaz Puthiyapurayil
via Openmp-dev wrote:<br>
</div>
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<p class="MsoNormal"><span style="font-family:Consolas">With
Release 3.9, kmp_lock.h is now including <atomic>
under #ifdef __cplusplus. This wasn’t the case with Release
3.8.1. However, there are ‘.c’ files that are compiled as
C++ files with ‘-x c++’ but they are not compiled with
-stdlib=libc++. As a result, clang does not find
<atomic> and gives the following error:<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-family:Consolas"><o:p> </o:p></span></p>
<p class="MsoNormal"><span style="font-family:Consolas">…
Building C object
projects/openmp/runtime/src/CMakeFiles/omp.dir/kmp_error.c.o<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-family:Consolas">:<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-family:Consolas">:<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-family:Consolas">In file
included from
/remote/vgsource7/riyaz/llvm/projects/openmp/runtime/src/kmp_error.c:16:<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-family:Consolas">In file
included from
/remote/vgsource7/riyaz/llvm/projects/openmp/runtime/src/kmp.h:92:<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-family:Consolas">/remote/vgsource7/riyaz/llvm/projects/openmp/runtime/src/kmp_lock.h:26:10:
fatal error: 'atomic' file not found<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-family:Consolas">#include
<atomic><o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-family:Consolas">
^<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-family:Consolas">1 error
generated.<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-family:Consolas"><o:p> </o:p></span></p>
<p class="MsoNormal"><span style="font-family:Consolas">Should
LIBOMP_USE_STDCPPLIB be set to TRUE?<o:p></o:p></span></p>
<p class="MsoNormal" style="text-align:justify"><o:p> </o:p></p>
<p class="MsoNormal" style="text-align:justify"><i><span
style="font-family:"Viner Hand ITC";color:black">-Riyaz<o:p></o:p></span></i></p>
<p class="MsoNormal"><o:p> </o:p></p>
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