Differential D2644 Diff 7617 cmake/modules/AddCompilerFlags.cmake

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cmake/modules/AddCompilerFlags.cmake

Show First 20 Lines • Show All 72 Lines • ▼ Show 20 Lines	macro(remove_cxx_compiler_flags)
endforeach()		endforeach()
endmacro()		endmacro()

macro(remove_compiler_flags)		macro(remove_compiler_flags)
remove_c_compiler_flags(${ARGN})		remove_c_compiler_flags(${ARGN})
remove_cxx_compiler_flags(${ARGN})		remove_cxx_compiler_flags(${ARGN})
endmacro()		endmacro()

		function(add_cxx_compiler_flag_with_fallback TARGET_VAR FLAG FALLBACK)
		# Remove the fallback flag if it exists, so that the main flag will override
		# it if it was previously added.
		remove_cxx_compiler_flags(${FALLBACK})

		set(FLAG_CANDIDATE ${FLAG})
		build_test_name_from_flag(FLAG_IS_SUPPORTED ${FLAG_CANDIDATE})
		CHECK_CXX_COMPILER_FLAG(${FLAG_CANDIDATE} ${FLAG_IS_SUPPORTED})
		if(NOT ${FLAG_IS_SUPPORTED})
		set(FLAG_CANDIDATE ${FALLBACK})
		build_test_name_from_flag(FLAG_IS_SUPPORTED ${FLAG_CANDIDATE})
		CHECK_CXX_COMPILER_FLAG(${FLAG_CANDIDATE} ${FLAG_IS_SUPPORTED})
		endif()

		if(${FLAG_IS_SUPPORTED})
		append_flag_to_variable(${TARGET_VAR} ${FLAG_CANDIDATE})
		set(${TARGET_VAR} ${${TARGET_VAR}} PARENT_SCOPE)
		endif()
		endfunction()

# Note that CMake does not provide any facility to check that a linker flag is		# Note that CMake does not provide any facility to check that a linker flag is
# supported by the compiler, but most linker will just drop any unsupported flag		# supported by the compiler, but most linker will just drop any unsupported flag
# (eventually with a warning).		# (eventually with a warning).
function(add_linker_flag)		function(add_linker_flag)
foreach(f ${ARGN})		foreach(f ${ARGN})
append_flag_to_variable(CMAKE_EXE_LINKER_FLAGS ${f})		append_flag_to_variable(CMAKE_EXE_LINKER_FLAGS ${f})
endforeach()		endforeach()
set(CMAKE_EXE_LINKER_FLAGS ${CMAKE_EXE_LINKER_FLAGS} PARENT_SCOPE)		set(CMAKE_EXE_LINKER_FLAGS ${CMAKE_EXE_LINKER_FLAGS} PARENT_SCOPE)
endfunction()		endfunction()