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CMake 3.15 introduced a new way of handling MSVC CRT type definition for the build: CMAKE_MSVC_RUNTIME_LIBRARY variable. (https://cmake.org/cmake/help/latest/variable/CMAKE_MSVC_RUNTIME_LIBRARY.html) This is supposed to be the way to go with MSVC CRT selection in new projects. Using this method however breaks the current CMake script for CUDA test. The reason is the CUDA test uses "FindCUDA" CMake module to detect and set up CUDA support in CMake, which is deprecated since CMake version 3.10, and which does not support CMAKE_MSVC_RUNTIME_LIBRARY selector correctly (i.e. it does not propagate the compiler option related to the CRT). I did not find a way to "patch" in the correct compiler options, so (while knowing this feature is only available from CMake 3.15 on) I decided to change also the way CUDA is handled and instead of using FindCUDA, used enable_language. Apart from having some nice additional side-effects, it also fixed the problem with CRT selection. However, the propagation of the compiler options (and in particular the options related to C++ standard selection) is still a bit flaky on Windows+MSVC platform, so it had to be done manually. The patch makes two things in parallel: 1) Introduces MSVC_BUILD_STATIC, which, together with CMake version >= 3.15, allows building static version of the 'fmt' lib (and all the tests). 2) At the same time, for CMake >= 3.15 it switches handling of CUDA support from (old) FindCUDA to (new) enable_language, to fix the problems which the old method has with the new CRT selector for MSVC in a new CMake. Added a check for CUDA before enabling it. Using VERSION_LESS instead of VERSION_GREATER_EQUAL Since apparently VERSION_GREATER_EQUAL exists only from CMake 3.7, while Android is using CMake 3.6. Removed MSVC_RUNTIME_LIBRARY logic from the CMake file. The static build can be set on the command line with CMake >= 3.15 by defining the policy and the CMAKE_MSVC_RUNTIME_LIBARY this way: cmake -G <gen> <options> -DCMAKE_POLICY_DEFAULT_CMP0091=NEW -DMSVC_BUILD_STATIC=ON -DCMAKE_MSVC_RUNTIME_LIBRARY="MultiThreaded$<$<CONFIG:Debug>:Debug>" When MSVC_BUILD_DEBUG is set the test 'posix-mock-test' is skipped as it does not build with the static runtime. |
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CMakeLists.txt | ||
cpp14.cc | ||
cuda-cpp14.cu |