<div dir="ltr"><div>Hi,<br><br></div>Having OpenMP together with clang would be awesome! If there is additional need for testing, I'd be happy to volunteer for that.<br><br>Cheers,<br>Sebastian<br></div><div class="gmail_extra">
<br><br><div class="gmail_quote">2014-05-22 7:26 GMT+02:00 Bill Wendling <span dir="ltr"><<a href="mailto:isanbard@gmail.com" target="_blank">isanbard@gmail.com</a>></span>:<br><blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex">
<div style="word-wrap:break-word">Hi Jack,<div><br></div><div>I didn’t have any specific plans for OpenMP in the release. If you’d be willing to test and build for OpenMP, then we could release it. :-)</div><span class="HOEnZb"><font color="#888888"><div>
<br></div><div>-bw</div></font></span><div><div class="h5"><div><br><div><div>On May 18, 2014, at 4:46 PM, Jack Howarth <<a href="mailto:howarth.mailing.lists@gmail.com" target="_blank">howarth.mailing.lists@gmail.com</a>> wrote:</div>
<br><blockquote type="cite"><div dir="ltr">Bill,<div> I have the openmp support in llvm 3.5svn now built on 10.7 using Xcode 4.6.3 and 10.8/10.9 using 5.1.1. The 10.7 build required the hack…</div><div><br></div><div>
perl -pi -e 's|list\(APPEND SANITIZER_COMMON_SUPPORTED_DARWIN_OS iossim\)||g' projects/compiler-rt/CMakeLists.txt</div>
<div><br></div><div>to suppress building libclang_rt.asan_iossim_dynamic.dylib. The compiler-rt build now expects the iPhoneSimulator7.0.0.sdk but Xcode 4.6.3 only has the /iPhoneSimulator6.1.sdk. I tried tweaking that back to 6.1 but the build of llibclang_rt.asan_iossim_dynamic.dylib. wants link to a copy of /Applications/Xcode.app/Contents/Developer/Platforms/iPhoneSimulator.platform/Developer/SDKs/iPhoneSimulator6.1.sdk/usr/lib/libc++.dylib as a x86_64 binary but it only exists as i386.<br>
</div><div> Jack</div><div><div class="gmail_extra">ps The previous report of omp_workshare2.c example failing to compile can be ignored as that was a stray character in my copy. </div><div class="gmail_extra"><br>
<div class="gmail_quote">On Sun, May 18, 2014 at 3:31 PM, Jack Howarth <span dir="ltr"><<a href="mailto:howarth.mailing.lists@gmail.com" target="_blank">howarth.mailing.lists@gmail.com</a>></span> wrote:<br><blockquote class="gmail_quote" style="margin:0px 0px 0px 0.8ex;border-left-width:1px;border-left-color:rgb(204,204,204);border-left-style:solid;padding-left:1ex">
<div dir="ltr"> It appears that the failure in the openmp build is due to a race condition as if I use…<div><br></div><div><span style="font-family:arial,sans-serif;font-size:13px">make -j1 compiler=clang</span><br>
</div><div><br></div><div>the failure in building openmp on my 10.8 box disappears.</div><div><br></div></div><div><div><div class="gmail_extra"><br><br><div class="gmail_quote">On Sun, May 18, 2014 at 1:36 PM, Jack Howarth <span dir="ltr"><<a href="mailto:howarth.mailing.lists@gmail.com" target="_blank">howarth.mailing.lists@gmail.com</a>></span> wrote:<br>
<blockquote class="gmail_quote" style="margin:0px 0px 0px 0.8ex;border-left-width:1px;border-left-color:rgb(204,204,204);border-left-style:solid;padding-left:1ex"><div dir="ltr">Bill,<div> Are there any plans to integrate the new openmp support into the llvm/clang 3.5 build process? I have been able to build the current llvm/clang/compiler-rt/openmp svn on Mac OS X 10.9 out of tree with…</div>
<div><br></div><div><div> pushd projects/openmp/runtime</div><div> make compiler=clang</div><div> popd</div></div><div><br></div><div>and then</div><div><br></div><div><div> OPENMP_DIR=`ls projects/openmp/runtime/tmp | grep dyn`</div>
<div> pushd projects/openmp/runtime/tmp/$OPENMP_DIR</div><div> install -m 755 libiomp5.dylib %i/opt/llvm-%v/lib/libgomp.dylib</div><div> install -m 644 *.h %i/opt/llvm-%v/lib/clang/%v/include</div><div>
popd</div></div><div><br></div><div>in our fink llvm packaging.</div><div> It would be nice to see the cmake build machinery updated to automatically build and install openmp if its sources are placed in the projects subdirectory of the llvm-3.5.0 source directory. Even if there isn't cmake build integration, but assuming an openmp 3.5.0 tar ball will be released for llvm/clang 3.5.0, the flag for openmp support needs to be synced to the library name generated in openmp. Currently, the clang flag -fopenmp flag emits -lgomp whereas the openmp svn currently produces a libiomp5.dylib instead. Also, the clang compiler currently has to be passed an explicitly library path to the location of the libgomp.dylib with -L. While the openmp headers can be found by clang when placed in clang's include directory, the libgomp.dylib shared lib isn't found when placed in any of the llvm/clang internal lib directories. If the file is going to be renamed as libgomp.dylib, it should be buried in the llvm/clang directories so that it doesn't collide with the FSF one. I can see the rational of using libgomp.dylib, so that configure and cmake detection of openmp is triggered, but in the long run it probably should be using a different shared library name.</div>
<div> Jack</div><div>ps I found on 10.9, that current llvm/clang/openmp can compile and run all of the example code at <span style="font-size:13px;font-family:arial,sans-serif"> </span><a href="https://computing.llnl.gov/tutorials/openMP/exercise.html" style="font-size:13px;font-family:arial,sans-serif" target="_blank">https://computing.llnl.gov/tutorials/openMP/exercise.html</a><span style="font-size:13px;font-family:arial,sans-serif"> to build except for </span><a href="https://computing.llnl.gov/tutorials/openMP/samples/C/omp_workshare2.c" style="font-size:inherit;color:rgb(51,51,153);font-family:monospace" target="_blank">omp_workshare2.c</a><font face="arial, sans-serif">. FYI, there appears to be an issue with building current openmp on 10.8 using the same approach. The openmp code appears to compile but the build fails with…</font></div>
<div><font face="arial, sans-serif"><br></font></div><div><div style="font-family:arial,sans-serif;font-size:13px"><div>make[1]: Leaving directory '/sw/src/fink.build/llvm35-3.5.0-0/llvm-3.5.0/projects/openmp/runtime/tmp/mac_32e-rtl_5_nor_dyn.12.rel.40.c0.t0-prrg4'</div>
<div>-------------------------------------------------------------------------------</div><div>Finished : 2014-05-17 01:49:01 UTC</div><div>Elapsed : 00:00:02</div><div>Result : --- Failure ---</div><div>-------------------------------------------------------------------------------</div>
<div><br></div></div></div></div>
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