Date: Thu, 6 Sep 2012 12:16:39 +0200 From: Matthieu Volat <mazhe@alkumuna.eu> To: freebsd-ports@freebsd.org Cc: "O. Hartmann" <ohartman@mail.zedat.fu-berlin.de> Subject: Re: Help. Porting "FreeOCL" fails (atomic_ops.h missing, CLANG++ libc++ issues ...) Message-ID: <20120906121639.4b7d894d089b2ddeb42f31b4@alkumuna.eu> In-Reply-To: <5047659D.8000107@mail.zedat.fu-berlin.de> References: <5047659D.8000107@mail.zedat.fu-berlin.de>
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On Wed, 05 Sep 2012 16:45:49 +0200 "O. Hartmann" <ohartman@mail.zedat.fu-berlin.de> wrote: > Hello. > > FreeBSD has fallen back far behind the standards of modern scientific > computing and I dsperately look for solutions having OpenCL support on > FreeBSD anyway. > > I stumbled into this project recently: > > FreeOCL at > http://code.google.com/p/freeocl/ > > or the sources located at > > http://code.google.com/p/freeocl/downloads/detail?name=FreeOCL-0.3.6-src.tar.gz&can=2&q= > > For your convenience, please find my naive attempt of a port attached to > this email. > > Well, I tried LLVM/CLANG, but Cmake of the sources fairly fails many > checks especuially for OpenMP. Using clang++ requisites the usage of the > new libc++ (CXXFLAGS+= -stdlib=libc++). But this fails with this error: > > > [...] > [ 17%] Building CXX object src/CMakeFiles/FreeOCL.dir/codebuilder.cpp.o > In file included from > /usr/ports/devel/freeocl/work/FreeOCL-0.3.6-Source/src/codebuilder.cpp:26: > /usr/ports/devel/freeocl/work/FreeOCL-0.3.6-Source/src/parser/parser.h:118:15: > error: no viable conversion from 'std::__1::basic_istream<char>' to > 'const bool' > const bool ok = in.get(c); > ^ ~~~~~~~~~ > /usr/ports/devel/freeocl/work/FreeOCL-0.3.6-Source/src/codebuilder.cpp:444:13: > warning: 70 enumeration values not handled in switch: 'VOID', 'BOOL', > 'HALF'... [-Wswitch] > switch(native->get_type_id()) > ^ > 1 warning and 1 error generated. > *** [src/CMakeFiles/FreeOCL.dir/codebuilder.cpp.o] Error code 1 > [..] > > > I tried also setting USE_GCC= 4.7+ using gcc-4.7 I installed, but that > fails with > > [...] > -- Build files have been written to: > /usr/ports/devel/freeocl/work/FreeOCL-0.3.6-Source > ===> Building for freeocl-0.3.6 > Scanning dependencies of target FreeOCL > [ 1%] Building CXX object src/CMakeFiles/FreeOCL.dir/freeocl.cpp.o > In file included from > /usr/ports/devel/freeocl/work/FreeOCL-0.3.6-Source/src/freeocl.cpp:18:0: > /usr/ports/devel/freeocl/work/FreeOCL-0.3.6-Source/src/freeocl.h:71:2: > error: 'u_int64_t' does not name a type > *** [src/CMakeFiles/FreeOCL.dir/freeocl.cpp.o] Error code 1 > [...] > > I think patches are required. > > More disturbing is the use of gcc-4.6 via > > USE_GCC= 4.6+ > > The error is then a compalin about a missing include file > > atomic_ops.h > > which is located in the abandoned KSE facility of the kernel, so the > includes seem not to be installed anymore - but since I'm not involved > in the development, I can only guess and ask the people here. > > Maybe some experienced freeBSD developers with the same need for OpenCl > is willing to pick up this and help a bit. > > Well, as far as I see, the FreeOCL project of Roland Borchard is a > OpenCL library for CPU usage. As far as I can understand, if we on > FreeBSd could have a library "libOpenCL" as this is usually installed by > the nVidia BLOB drivers on Linux for the use of OpenCL/GPGPU support > with their GPUs, this would fill a still painfull open gap in FreeBSD as > a scientific development platform. > > There is still no suitable compiler for OpenCL out here for freeBSD, but > I have still the hope that LLVM can provide such a thing in the near future. > > I cross post this posting also to "performance" in the hope finding some > people attracted and "lurd" into this subject. > > Regards, > > O. Hartmann Hello, I've taken a quick look in that implementation : it seems to depends on devel/libatomic_ops even if the devs did not write any CMake checks for that (grrr). After installing it, I was able to build the port with gcc-46 without problems, if I find some time, I will try to test it later. Btw, did you had a look to poCL too (http://sourceforge.net/apps/mediawiki/pocl/index.php?title=Main_Page)? I know the Debian people were considering it for a base implementation, but I'm a bit clueless about all those foss versions coming. A comparison could be helpful ^^ -- Matthieu Volat <mazhe@alkumuna.eu>
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