[llvm-dev] CMake build of LLVM/clang with -DCMAKE_BUILD_TYPE=Release does not create release versions? (original) (raw)

Dennis Luehring via llvm-dev llvm-dev at lists.llvm.org
Wed Sep 19 02:03:59 PDT 2018

because with that generator the CMAKE_BUILD_TYPE variable is ignored because it is a "multi-configuration target".

thanks for the link, is that a bug in the CMake configuration (or better not getting any warning) or is there just documentation missing?

so i can use --config Debug or --config Release and get the correct results - i hope that works the build takes hours

strange is that -DCMAKE_BUILD_TYPE=Debug results in a different build-directory size compared to -DCMAKE_BUILD_TYPE=Release - so its not fully ignored?

Am 19.09.2018 um 10:30 schrieb Boldizsar.Palotas at esa.int:

If I understand correctly, you need to set Release mode within the VS IDE because with that generator the CMAKEBUILDTYPE variable is ignored because it is a "multi-configuration target".

see https://stackoverflow.com/questions/24460486/cmake-build-type-not-being-used-in-cmakelists-txt

From: Dennis Luehring via llvm-dev <llvm-dev at lists.llvm.org> To: llvm-dev <llvm-dev at lists.llvm.org> Date: 2018.09.19 06:11 Subject: [llvm-dev] CMake build of LLVM/clang with -DCMAKEBUILDTYPE=Release does not create release versions? Sent by: "llvm-dev" <llvm-dev-bounces at lists.llvm.org> my build environment: Win7 x64 VStudio 2017 Community Edition 15.8.4 (latest) CMake 3.12.1 (x86) git 2.19.0 (latest, x64) Python 2.7.2 (x86) directory structure test llvm <-- git clone https://github.com/llvm-mirror/llvm_ _tools_ _clang <-- git clone https://github.com/llvm-mirror/clang_ _llvmbuild_ _Debug build: clean build, llvmbuild is deleted before_ _llvmbuild> cmake -Thost=x64 -G "Visual Studio 15 2017 Win64" -DCMAKEBUILDTYPE=Debug -DLLVMTARGETSTOBUILD=host -DLLVMBUILDEXAMPLES=1 -DCLANGBUILDEXAMPLES=1 -DLLVMINCLUDETESTS=OFF -DLLVMINCLUDEDOCS=OFF ..\llvm builds for hours, a few warning, no errors -> llvmbuild is ~44GB i can find many working libs/exes(also examples) in llvmbuild\Debug(lib|bin) then i tried to build release versions Release build: clean build, llvmbuild is deleted before llvmbuild> cmake -Thost=x64 -G "Visual Studio 15 2017 Win64" -DCMAKEBUILDTYPE=Release -DLLVMTARGETSTOBUILD=host -DLLVMBUILDEXAMPLES=1 -DCLANGBUILDEXAMPLES=1 -DLLVMINCLUDETESTS=OFF -DLLVMINCLUDEDOCS=OFF ..\llvm builds for hours, a few warning, no errors -> llvmbuild is ~47GB (i though Release would be smaller?) i can find many working libs/exes(also examples) in llvmbuild\Debug(lib|bin) - the executables seems to be larger as in "Debug"-Build? llvm-build\Release\bin just contains llvm-lit.py why is the debug folder populated and where i can find the Release build libs/exes?

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