89 lines
2.5 KiB
CMake
89 lines
2.5 KiB
CMake
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# - Add flags to compile with extra warnings
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#
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# enable_extra_compiler_warnings(<targetname>)
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# globally_enable_extra_compiler_warnings() - to modify CMAKE_CXX_FLAGS, etc
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# to change for all targets declared after the command, instead of per-command
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#
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#
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# Original Author:
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# 2010 Ryan Pavlik <rpavlik@iastate.edu> <abiryan@ryand.net>
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# http://academic.cleardefinition.com
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# Iowa State University HCI Graduate Program/VRAC
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#
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# Copyright Iowa State University 2009-2010.
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# Distributed under the Boost Software License, Version 1.0.
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# (See accompanying file LICENSE_1_0.txt or copy at
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# http://www.boost.org/LICENSE_1_0.txt)
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if(__enable_extra_compiler_warnings)
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return()
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endif()
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set(__enable_extra_compiler_warnings YES)
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macro(_enable_extra_compiler_warnings_flags)
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set(_flags)
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if(MSVC)
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option(COMPILER_WARNINGS_EXTREME
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"Use compiler warnings that are probably overkill."
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off)
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mark_as_advanced(COMPILER_WARNINGS_EXTREME)
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set(_flags "/W4")
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if(COMPILER_WARNINGS_EXTREME)
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set(_flags "${_flags} /Wall /wd4619 /wd4668 /wd4820 /wd4571 /wd4710")
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endif()
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else()
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include(CheckCXXCompilerFlag)
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set(_flags)
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check_cxx_compiler_flag(-W SUPPORTS_W_FLAG)
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if(SUPPORTS_W_FLAG)
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set(_flags "${_flags} -W")
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endif()
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check_cxx_compiler_flag(-Wall SUPPORTS_WALL_FLAG)
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if(SUPPORTS_WALL_FLAG)
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set(_flags "${_flags} -Wall")
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endif()
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check_cxx_compiler_flag(-Wextra SUPPORTS_WEXTRA_FLAG)
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if(SUPPORTS_WEXTRA_FLAG)
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set(_flags "${_flags} -Wextra")
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endif()
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if(SUPPORTS_WALL_FLAG)
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# At least GCC includes -Wmaybe-uninitialized in -Wall, which
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# unneccesarily whines about boost::optional (by it's nature
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# it's a "maybe" warning - prone to noisy false-positives)
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check_cxx_compiler_flag(-Wno-maybe-uninitialized SUPPORTS_WNO_MAYBE_UNINITIALIZED_FLAG)
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if(SUPPORTS_WNO_MAYBE_UNINITIALIZED_FLAG)
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set(_flags "${_flags} -Wno-maybe-uninitialized")
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endif()
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endif()
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endif()
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endmacro()
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function(enable_extra_compiler_warnings _target)
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_enable_extra_compiler_warnings_flags()
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get_target_property(_origflags ${_target} COMPILE_FLAGS)
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if(_origflags)
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set_property(TARGET
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${_target}
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PROPERTY
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COMPILE_FLAGS
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"${_flags} ${_origflags}")
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else()
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set_property(TARGET
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${_target}
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PROPERTY
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COMPILE_FLAGS
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"${_flags}")
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endif()
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endfunction()
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function(globally_enable_extra_compiler_warnings)
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_enable_extra_compiler_warnings_flags()
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set(CMAKE_C_FLAGS "${CMAKE_C_FLAGS} ${_flags}" PARENT_SCOPE)
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set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} ${_flags}" PARENT_SCOPE)
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endfunction()
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