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

[Dennis Luehring via llvm-dev]

 >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 CMAKE_BUILD_TYPE 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
> -DCMAKE_BUILD_TYPE=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
>     llvm_build
>
> Debug build: clean build, llvm_build is deleted before
>
> llvm_build> cmake -Thost=x64 -G "Visual Studio 15 2017 Win64"
> -DCMAKE_BUILD_TYPE=Debug -DLLVM_TARGETS_TO_BUILD=host
> -DLLVM_BUILD_EXAMPLES=1 -DCLANG_BUILD_EXAMPLES=1
> -DLLVM_INCLUDE_TESTS=OFF -DLLVM_INCLUDE_DOCS=OFF ..\llvm
>
> builds for hours, a few warning, no errors -> llvm_build is ~44GB
>
> i can find many working libs/exes(also examples) in
> llvm_build\Debug\(lib|bin)
>
> then i tried to build release versions
>
> Release build: clean build, llvm_build is deleted before
>
> llvm_build> cmake -Thost=x64 -G "Visual Studio 15 2017 Win64"
> -DCMAKE_BUILD_TYPE=Release -DLLVM_TARGETS_TO_BUILD=host
> -DLLVM_BUILD_EXAMPLES=1 -DCLANG_BUILD_EXAMPLES=1
> -DLLVM_INCLUDE_TESTS=OFF -DLLVM_INCLUDE_DOCS=OFF ..\llvm
>
> builds for hours, a few warning, no errors -> llvm_build is ~47GB (i
> though Release would be smaller?)
>
> i can find many working libs/exes(also examples) in
> llvm_build\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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