db149c1ca5
It's meant to be used by the linker, not by the compiler, thus keep it only for the linker flags. Clang claims the argument is not used.
86 lines
2.3 KiB
CMake
86 lines
2.3 KiB
CMake
# SetupBuildFlags.cmake
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#
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# Setups compiler/linker flags, skipping those which are not supported.
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include(CheckCCompilerFlag)
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if(CMAKE_CXX_COMPILER_ID)
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include(CheckCXXCompilerFlag)
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endif(CMAKE_CXX_COMPILER_ID)
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macro(setup_build_flags _maintainer_mode)
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list(APPEND proposed_flags
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-Wformat
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-Wformat-security
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-Winit-self
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-Wmissing-declarations
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-Wmissing-noreturn
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-Wpointer-arith
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-Wredundant-decls
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-Wshadow
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-Wundef
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-Wwrite-strings
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-Wno-cast-function-type
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-fno-strict-aliasing
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)
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if(${_maintainer_mode})
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list(APPEND proposed_flags
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-Wall
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-Wextra
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-Wdeprecated-declarations
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-Wmissing-include-dirs
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)
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else(${_maintainer_mode})
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list(APPEND proposed_flags
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-Wno-deprecated-declarations
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-Wno-missing-include-dirs)
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endif(${_maintainer_mode})
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list(APPEND proposed_c_flags
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${proposed_flags}
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-Werror-implicit-function-declaration
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-Wdeclaration-after-statement
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-Wno-missing-field-initializers
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-Wno-sign-compare
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-Wno-unused-parameter
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-Wnested-externs
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)
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if("${CMAKE_C_COMPILER_ID}" STREQUAL "Clang")
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list(APPEND proposed_c_flags
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-Wno-parentheses-equality
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-Wno-format-nonliteral
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)
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endif("${CMAKE_C_COMPILER_ID}" STREQUAL "Clang")
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list(APPEND proposed_cxx_flags
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${proposed_flags}
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-Wnoexcept
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)
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foreach(flag IN LISTS proposed_c_flags)
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check_c_compiler_flag(${flag} c_flag_${flag}_supported)
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if(c_flag_${flag}_supported)
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set(CMAKE_C_FLAGS "${flag} ${CMAKE_C_FLAGS}")
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endif(c_flag_${flag}_supported)
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unset(c_flag_${flag}_supported)
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endforeach()
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if(CMAKE_CXX_COMPILER_ID)
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foreach(flag IN LISTS proposed_cxx_flags)
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check_cxx_compiler_flag(${flag} cxx_flag_${flag}_supported)
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if(cxx_flag_${flag}_supported)
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set(CMAKE_CXX_FLAGS "${flag} ${CMAKE_CXX_FLAGS}")
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endif(cxx_flag_${flag}_supported)
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unset(cxx_flag_${flag}_supported)
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endforeach()
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endif(CMAKE_CXX_COMPILER_ID)
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if(("${CMAKE_C_COMPILER_ID}" STREQUAL "Clang") OR ("${CMAKE_C_COMPILER_ID}" STREQUAL "GNU") AND (NOT ${CMAKE_SYSTEM_NAME} MATCHES "BSD"))
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set(CMAKE_EXE_LINKER_FLAGS "-Wl,--no-undefined ${CMAKE_EXE_LINKER_FLAGS}")
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set(CMAKE_MODULE_LINKER_FLAGS "-Wl,--no-undefined ${CMAKE_MODULE_LINKER_FLAGS}")
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set(CMAKE_SHARED_LINKER_FLAGS "-Wl,--no-undefined ${CMAKE_SHARED_LINKER_FLAGS}")
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endif(("${CMAKE_C_COMPILER_ID}" STREQUAL "Clang") OR ("${CMAKE_C_COMPILER_ID}" STREQUAL "GNU") AND (NOT ${CMAKE_SYSTEM_NAME} MATCHES "BSD"))
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endmacro()
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