2020-02-21 21:15:45 +01:00
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include(CheckCXXCompilerFlag)
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function(add_cxx_flag_if_supported_to_targets flagname targets)
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check_cxx_compiler_flag("${flagname}" HAVE_FLAG_${flagname})
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if (HAVE_FLAG_${flagname})
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foreach(target ${targets})
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target_compile_options(${target} PUBLIC ${flagname})
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endforeach()
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endif()
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endfunction()
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# Assumes that it is only called for development builds, where warnings
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# and Werror is desired, so it also enables Werror.
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function(add_warnings_to_targets targets)
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LIST(LENGTH targets TARGETS_LEN)
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# For now we just assume 2 possibilities: msvc and msvc-like compilers,
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# and other.
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if (MSVC)
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foreach(target ${targets})
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# Force MSVC to consider everything as encoded in utf-8
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target_compile_options( ${target} PRIVATE /utf-8 )
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# Enable Werror equivalent
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if (CATCH_ENABLE_WERROR)
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target_compile_options( ${target} PRIVATE /WX )
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endif()
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# MSVC is currently handled specially
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if ( CMAKE_CXX_COMPILER_ID MATCHES "MSVC" )
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STRING(REGEX REPLACE "/W[0-9]" "/W4" CMAKE_CXX_FLAGS ${CMAKE_CXX_FLAGS}) # override default warning level
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target_compile_options( ${target} PRIVATE /w44265 /w44061 /w44062 /w45038 )
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endif()
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endforeach()
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endif()
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if (NOT MSVC)
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set(CHECKED_WARNING_FLAGS
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"-Wall"
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"-Wextra"
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"-Wpedantic"
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"-Wweak-vtables"
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"-Wunreachable-code"
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"-Wmissing-declarations"
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"-Wexit-time-destructors"
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"-Wglobal-constructors"
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"-Wmissing-noreturn"
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"-Wparentheses"
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"-Wextra-semi-stmt"
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"-Wunreachable-code"
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"-Wstrict-aliasing"
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"-Wreturn-std-move"
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"-Wmissing-braces"
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)
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foreach(warning ${CHECKED_WARNING_FLAGS})
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add_cxx_flag_if_supported_to_targets(${warning} "${targets}")
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endforeach()
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if (CATCH_ENABLE_WERROR)
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foreach(target ${targets})
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# Enable Werror equivalent
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target_compile_options( ${target} PRIVATE -Werror )
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endforeach()
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endif()
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endif()
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endfunction()
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