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fennecs/cmake/CMakeFlagsHandling.cmake
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CMakeFlagsHandling.cmake
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if(_CMAKE_FLAGS_HANDLING)
return()
endif()
set(_CMAKE_FLAGS_HANDLING TRUE)
#===============================================================================
# Compilation options handling
#===============================================================================
macro(_get_flags_message lang type desc)
if(${lang} MATCHES "C.." OR ${lang} MATCHES "Fortran")
set(${desc} "Flags used by the compiler")
elseif(${lang} MATCHES ".*_LINKER")
set(${desc} "Flags used by the linker")
endif()
if(${lang} MATCHES "SHARED_LINKER")
set(${desc} "${desc} during the creation of shared libraries")
elseif(${lang} MATCHES "MODULE_LINKER")
set(${desc} "${desc} during the creation of modules")
elseif(${lang} MATCHES "STATIC_LINKER")
set(${desc} "${desc} linker during the creation of static libraries")
endif()
if(${type} MATCHES "ALL")
set(${desc} "${desc} during all build types")
else()
set(${desc} "${desc} during ${type} builds")
endif()
endmacro()
#===============================================================================
function(handle_flags)
include(CMakeParseArguments)
cmake_parse_arguments(_flags
"ADD;REMOVE" "LANG;TYPE" ""
${ARGN}
)
if(NOT _flags_LANG)
set(_flags_LANG ${FLAGS_HANDLING_DEFAULT_LANGUAGE})
endif()
set(_variable CMAKE_${_flags_LANG}_FLAGS)
if (_flags_TYPE)
set(_variable ${_variable}_${_flags_TYPE})
else()
set(_flags_TYPE "ALL")
endif()
_get_flags_message(${_flags_LANG} ${_flags_TYPE} _desc)
foreach(flag ${_flags_UNPARSED_ARGUMENTS})
if (_flags_ADD)
string(REPLACE "${flag}" "match" _temp_var "${${_variable}}")
if(NOT _temp_var MATCHES "match")
set(${_variable} "${flag} ${${_variable}}" CACHE STRING ${_desc} FORCE)
endif()
elseif(_flags_REMOVE)
string(REPLACE "${flag} " "" ${_variable} "${${_variable}}")
set(${_variable} "${${_variable}}" CACHE STRING ${_desc} FORCE)
endif()
endforeach()
endfunction()
#===============================================================================
function(add_flags)
handle_flags(ADD ${ARGN})
endfunction()
#===============================================================================
function(remove_flags)
handle_flags(REMOVE ${ARGN})
endfunction()
#===============================================================================
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