Hi, Is it possible to somehow automatically detect which OpenMP library to use without need to hard-code it per-compiler-version? Maybe using try_compile CMake trickery?
On Sun, Aug 28, 2016 at 8:37 PM, Francesc Juhe <fju...@gmail.com> wrote: > I run a few tests regarding clang and omp after installing OSX 10.11 and > Xcode 7.3.1. > > It seems that clang-omp-3.5 from libs can’t compile using OSX 10.11 SDK. > > So, I downloaded clang 3.7.0 and 3.8.0 darwin binaries from official page > and both compile blender ok after a minor modification on cmake. > > diff --git a/build_files/cmake/platform/platform_apple.cmake > b/build_files/cmake/platform/platform_apple.cmake > index b28b748..ec40400 100644 > --- a/build_files/cmake/platform/platform_apple.cmake > +++ b/build_files/cmake/platform/platform_apple.cmake > @@ -376,8 +376,13 @@ if(WITH_OPENMP) > message(STATUS "Using special OpenMP enabled compiler !") > # letting find_package(OpenMP) module work for gcc > if(CMAKE_C_COMPILER_ID MATCHES "Clang") # clang-omp in > darwin libs > set(OPENMP_FOUND ON) > - set(OpenMP_C_FLAGS "-fopenmp" CACHE STRING "C > compiler flags for OpenMP parallization" FORCE) > - set(OpenMP_CXX_FLAGS "-fopenmp" CACHE STRING "C++ > compiler flags for OpenMP parallization" FORCE) > + if(CMAKE_CXX_COMPILER_VERSION VERSION_LESS 3.7) > + set(OpenMP_C_FLAGS "-fopenmp" CACHE STRING > "C compiler flags for OpenMP parallization" FORCE) > + set(OpenMP_CXX_FLAGS "-fopenmp" CACHE > STRING "C++ compiler flags for OpenMP parallization" FORCE) > + else() > + set(OpenMP_C_FLAGS "-fopenmp=libiomp5" > CACHE STRING "C compiler flags for OpenMP parallization" FORCE) > + set(OpenMP_CXX_FLAGS "-fopenmp=libiomp5" > CACHE STRING "C++ compiler flags for OpenMP parallization" FORCE) > + endif() > include_directories(${LIBDIR}/openmp/include) > link_directories(${LIBDIR}/openmp/lib) > # This is a workaround for our helperbinaries ( > datatoc, masgfmt, ... ), > > After the tests I have not found any issues with cuda 7.5 and xcode 7.3.1 > or clang 3.7/3.8 but I guess it’s because I am using the latest version and > is seems to have fixed incompatible compiler issues but as I don’t know > what the cuda-hack does, I am not sure. > > Any comment on what the cuda-hack does/solves is very welcome. > > Thanks, > Francesc > > On 26 Aug 2016, at 19:08, Jens Verwiebe <i...@jensverwiebe.de> wrote: > > > I'd say cuda8 is pointless for you right now, cause pascal gpu is not > > yet supported by the NV/OSX (Quadro-) drivers. > > > > You would definitely loose openmp capability unless you compile and use > > a vanilla clang 3.7 which supports it. > > > > > > Jens > > > > > > Am 26.08.2016 um 18:11 schrieb Francesc Juhe: > >> Hi, > >> > >> Some time ago noticed this commit https://developer.blender.org/ > rB3a24e6320f31a790ea9d3c912a35db2186140b71 changing the nvcc compiler on > builbot but I did not give it much though as I was having no issues > compiling with cuda 7.5 and clang 3.5 from libs folder on OSX 10.9. But now > with CUDA 8 it seems I have to update to OSX 10.11 and Xcode 7.3. > >> > >> So, how does this cuda-hack work? > >> Also, OSX buildbot builds seem to be compiled without OpenMP but > release builds are compiled with it. What are the appropriate steps for > building a release build? > >> > >> Thank you, > >> Francesc > >> > >> _______________________________________________ > >> Bf-committers mailing list > >> Bf-committers@blender.org > >> https://lists.blender.org/mailman/listinfo/bf-committers > >> > > > > -- > > > > Jens Verwiebe > > Allerskehre 44 - 22309 Hamburg > > > > Tel.: +49 40 68 78 50 > > mobile: +49 172 400 49 07 > > mailto: i...@jensverwiebe.de > > web: http://www.jensverwiebe.de > > > > _______________________________________________ > > Bf-committers mailing list > > Bf-committers@blender.org > > https://lists.blender.org/mailman/listinfo/bf-committers > > _______________________________________________ > Bf-committers mailing list > Bf-committers@blender.org > https://lists.blender.org/mailman/listinfo/bf-committers > -- With best regards, Sergey Sharybin _______________________________________________ Bf-committers mailing list Bf-committers@blender.org https://lists.blender.org/mailman/listinfo/bf-committers