On Fri, Dec 4, 2015 at 10:15 PM, Shane Ambler <[email protected]> wrote:
> On 05/12/2015 04:42, Larry Gritz wrote: > >> I think it should be as simple as >> >> CXX=clang cmake ~/git/oiio && make >> >> See if that works? >> >> >> On Dec 4, 2015, at 8:13 AM, Richard Shaw <[email protected]> >>> wrote: >>> >>> I'm playing around with clang but I'm not very familiar how to do >>> that with cmake... I told cmake to to use the clang complier but do >>> I need to tell it anything about linking? >>> >>> $ cmake -DCMAKE_C_COMPILER=/usr/bin/clang >>> -DCMAKE_CXX_COMPILER=/usr/bin/clang ~/git/oiio/ >>> >> > CMAKE_CXX_COMPILER should be clang++ ?? clang++ is a symbolic link to clang... I think it knows how to compile it based on the extension. > The first time it tries to link I get this: >>> >>> [ 8%] Linking CXX executable array_view_test cd >>> /home/build/build/OpenImageIO/src/libutil && /usr/bin/cmake -E >>> cmake_link_script CMakeFiles/array_view_test.dir/link.txt >>> --verbose=1 /usr/bin/clang -O3 -DNDEBUG >>> CMakeFiles/array_view_test.dir/array_view_test.cpp.o -o >>> array_view_test -rdynamic libOpenImageIO_Util.so.1.6.6 >>> -lboost_filesystem -lboost_regex -lboost_system -lboost_thread -lrt >>> -ldl -lHalf -lIex -lImath -lIlmThread -lpthread >>> -Wl,-rpath,/home/build/build/OpenImageIO/src/libutil /usr/bin/ld: >>> CMakeFiles/array_view_test.dir/array_view_test.cpp.o: undefined >>> reference to symbol '_ZNSo9_M_insertIdEERSoT_@@GLIBCXX_3.4.9' >>> /usr/lib64/libstdc++.so.6: error adding symbols: DSO missing from >>> command line clang: error: linker command failed with exit code 1 >>> (use -v to see invocation) >>> >> > "undefined reference to GLIBCXX_3.4.9" which it is trying to load from > /usr/lib64/libstdc++.so.6 - try setting LD_LIBRARY_PATH in your > environment to point at a newer gcc build so it can find an updated > libstdc++ before the older system one. I'm doing everything with system installed packages so I'm not sure what to do. Thanks, Richard
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