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https://github.com/Kitware/CMake.git
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f3d4254b3d
Fix the language checks added by commit90dead024c(CheckCompilerFlag: unified way to check compiler flags per language, 2020-09-25, v3.19.0-rc1~88^2), commit10ae907de0(CheckSoureCompiles: Add a unified way to check if a source compiles, 2020-09-14, v3.19.0-rc1~118^2~1), and commit357e2ef429(CheckSoureRuns: Add a unified way to check if a source runs, 2020-09-14, v3.19.0-rc1~118^2) to work when variables of the language names are set. Fixes: #21500
18 lines
515 B
CMake
18 lines
515 B
CMake
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enable_language (CXX)
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include(CheckCompilerFlag)
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set(CXX 1) # test that this is tolerated
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check_compiler_flag(CXX "-_this_is_not_a_flag_" SHOULD_FAIL)
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if(SHOULD_FAIL)
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message(SEND_ERROR "invalid CXX compile flag didn't fail.")
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endif()
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if(CMAKE_CXX_COMPILER_ID MATCHES "GNU|Clang" AND NOT "x${CMAKE_CXX_SIMULATE_ID}" STREQUAL "xMSVC")
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check_compiler_flag(CXX "-x c++" SHOULD_WORK)
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if(NOT SHOULD_WORK)
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message(SEND_ERROR "${CMAKE_CXX_COMPILER_ID} compiler flag '-x c++' check failed")
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endif()
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endif()
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