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47 lines
1.8 KiB
CMake
47 lines
1.8 KiB
CMake
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# detect-coverage.cmake -- Detect supported compiler coverage flags
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# Licensed under the Zlib license, see LICENSE.md for details
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macro(add_code_coverage)
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# Check for -coverage flag support for Clang/GCC
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if(CMAKE_VERSION VERSION_LESS 3.14)
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set(CMAKE_REQUIRED_LIBRARIES -lgcov)
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else()
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set(CMAKE_REQUIRED_LINK_OPTIONS -coverage)
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endif()
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check_c_compiler_flag(-coverage HAVE_COVERAGE)
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set(CMAKE_REQUIRED_LIBRARIES)
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set(CMAKE_REQUIRED_LINK_OPTIONS)
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if(HAVE_COVERAGE)
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add_compile_options(-coverage)
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add_link_options(-coverage)
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message(STATUS "Code coverage enabled using: -coverage")
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else()
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# Some versions of GCC don't support -coverage shorthand
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if(CMAKE_VERSION VERSION_LESS 3.14)
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set(CMAKE_REQUIRED_LIBRARIES -lgcov)
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else()
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set(CMAKE_REQUIRED_LINK_OPTIONS -lgcov -fprofile-arcs)
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endif()
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check_c_compiler_flag("-ftest-coverage -fprofile-arcs -fprofile-values" HAVE_TEST_COVERAGE)
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set(CMAKE_REQUIRED_LIBRARIES)
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set(CMAKE_REQUIRED_LINK_OPTIONS)
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if(HAVE_TEST_COVERAGE)
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add_compile_options(-ftest-coverage -fprofile-arcs -fprofile-values)
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add_link_options(-lgcov -fprofile-arcs)
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message(STATUS "Code coverage enabled using: -ftest-coverage")
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else()
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message(WARNING "Compiler does not support code coverage")
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set(WITH_CODE_COVERAGE OFF)
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endif()
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endif()
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# Set optimization level to zero for code coverage builds
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if (WITH_CODE_COVERAGE)
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# Use CMake compiler flag variables due to add_compile_options failure on Windows GCC
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set(CMAKE_C_FLAGS "-O0 ${CMAKE_C_FLAGS}")
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set(CMAKE_CXX_FLAGS "-O0 ${CMAKE_CXX_FLAGS}")
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endif()
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endmacro()
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