path: root/SetFlags.cmake

macro (add_flags_lnk FLAGS)
	set(CMAKE_EXE_LINKER_FLAGS            "${CMAKE_EXE_LINKER_FLAGS}            ${FLAGS}")
	set(CMAKE_EXE_LINKER_FLAGS_DEBUG      "${CMAKE_EXE_LINKER_FLAGS_DEBUG}      ${FLAGS}")
	set(CMAKE_EXE_LINKER_FLAGS_RELEASE    "${CMAKE_EXE_LINKER_FLAGS_RELEASE}    ${FLAGS}")
	set(CMAKE_SHARED_LINKER_FLAGS         "${CMAKE_SHARED_LINKER_FLAGS}         ${FLAGS}")
	set(CMAKE_SHARED_LINKER_FLAGS_DEBUG   "${CMAKE_SHARED_LINKER_FLAGS_DEBUG}   ${FLAGS}")
	set(CMAKE_SHARED_LINKER_FLAGS_RELEASE "${CMAKE_SHARED_LINKER_FLAGS_RELEASE} ${FLAGS}")
	set(CMAKE_MODULE_LINKER_FLAGS         "${CMAKE_MODULE_LINKER_FLAGS}         ${FLAGS}")
	set(CMAKE_MODULE_LINKER_FLAGS_DEBUG   "${CMAKE_MODULE_LINKER_FLAGS_DEBUG}   ${FLAGS}")
	set(CMAKE_MODULE_LINKER_FLAGS_RELEASE "${CMAKE_MODULE_LINKER_FLAGS_RELEASE} ${FLAGS}")
endmacro()

macro(add_flags_cxx FLAGS)
	set(CMAKE_CXX_FLAGS         "${CMAKE_CXX_FLAGS}         ${FLAGS}")
	set(CMAKE_C_FLAGS           "${CMAKE_C_FLAGS}           ${FLAGS}")
	set(CMAKE_CXX_FLAGS_DEBUG   "${CMAKE_CXX_FLAGS_DEBUG}   ${FLAGS}")
	set(CMAKE_C_FLAGS_DEBUG     "${CMAKE_C_FLAGS_DEBUG}     ${FLAGS}")
	set(CMAKE_CXX_FLAGS_RELEASE "${CMAKE_CXX_FLAGS_RELEASE} ${FLAGS}")
	set(CMAKE_C_FLAGS_RELEASE   "${CMAKE_C_FLAGS_RELEASE}   ${FLAGS}")
endmacro()


macro(set_flags)
	if(NOT DEFINED ${FLAGS_SET})
		set(FLAGS_SET 1)

	# Add the preprocessor macros used for distinguishing between debug and release builds (CMake does this automatically for MSVC):
	if (NOT MSVC)
		set(CMAKE_CXX_FLAGS_DEBUG   "${CMAKE_CXX_FLAGS_DEBUG}   -D_DEBUG")
		set(CMAKE_C_FLAGS_DEBUG     "${CMAKE_C_FLAGS_DEBUG}     -D_DEBUG")
		set(CMAKE_CXX_FLAGS_RELEASE "${CMAKE_CXX_FLAGS_RELEASE} -DNDEBUG")
		set(CMAKE_C_FLAGS_RELEASE   "${CMAKE_C_FLAGS_RELEASE}   -DNDEBUG")
	endif()

	if(MSVC)
		# Make build use multiple threads under MSVC:
		add_flags_cxx("/MP")

		# Make release builds use link-time code generation:
		set(CMAKE_CXX_FLAGS_RELEASE "${CMAKE_CXX_FLAGS_RELEASE} /GL")
		set(CMAKE_C_FLAGS_RELEASE   "${CMAKE_C_FLAGS_RELEASE}   /GL")
		set(CMAKE_EXE_LINKER_FLAGS_RELEASE    "${CMAKE_EXE_LINKER_FLAGS_RELEASE}    /LTCG")
		set(CMAKE_SHARED_LINKER_FLAGS_RELEASE "${CMAKE_SHARED_LINKER_FLAGS_RELEASE} /LTCG")
		set(CMAKE_MODULE_LINKER_FLAGS_RELEASE "${CMAKE_MODULE_LINKER_FLAGS_RELEASE} /LTCG")
	elseif(APPLE)
		#on os x clang adds pthread for us but we need to add it for gcc
		if ("${CMAKE_CXX_COMPILER_ID}" STREQUAL "Clang")
			set(CMAKE_CXX_FLAGS         "${CMAKE_CXX_FLAGS}         -std=c++11")
			set(CMAKE_CXX_FLAGS_DEBUG   "${CMAKE_CXX_FLAGS_DEBUG}   -std=c++11")
			set(CMAKE_CXX_FLAGS_RELEASE "${CMAKE_CXX_FLAGS_RELEASE} -std=c++11")
		else()
			add_flags_cxx("-pthread")
		endif()

	else()
		# Let gcc / clang know that we're compiling a multi-threaded app:
		add_flags_cxx("-pthread")
		if ("${CMAKE_CXX_COMPILER_ID}" STREQUAL "Clang")
			set(CMAKE_CXX_FLAGS         "${CMAKE_CXX_FLAGS}         -std=c++11")
			set(CMAKE_CXX_FLAGS_DEBUG   "${CMAKE_CXX_FLAGS_DEBUG}   -std=c++11")
			set(CMAKE_CXX_FLAGS_RELEASE "${CMAKE_CXX_FLAGS_RELEASE} -std=c++11")
		endif()

		# We use a signed char (fixes #640 on RasPi)
		add_flags_cxx("-fsigned-char")
	endif()


	# Allow for a forced 32-bit build under 64-bit OS:
	if (FORCE_32)
		add_flags_cxx("-m32")
		add_flags_lnk("-m32")
	endif()


	# Have the compiler generate code specifically targeted at the current machine on Linux
	if(LINUX AND NOT CROSSCOMPILE)
		add_flags_cxx("-march=native")
	endif()


	# Use static CRT in MSVC builds:
	if (MSVC)
		string(REPLACE "/MD" "/MT" CMAKE_CXX_FLAGS_RELEASE "${CMAKE_CXX_FLAGS_RELEASE}")
		string(REPLACE "/MD" "/MT" CMAKE_C_FLAGS_RELEASE   "${CMAKE_C_FLAGS_RELEASE}")
		string(REPLACE "/MDd" "/MTd" CMAKE_CXX_FLAGS_DEBUG   "${CMAKE_CXX_FLAGS_DEBUG}")
		string(REPLACE "/MDd" "/MTd" CMAKE_C_FLAGS_DEBUG     "${CMAKE_C_FLAGS_DEBUG}")
	endif()

	endif()
endmacro()

macro(set_lib_flags)
	if(NOT DEFINED ${LIB_FLAGS_SET})
		set(LIB_FLAGS_SET 1)
		# Set lower warnings-level for the libraries:
		if (MSVC)
			# Remove /W3 from command line -- cannot just cancel it later with /w like in unix, MSVC produces a D9025 warning (option1 overriden by option2)
			string(REPLACE "/W3" "" CMAKE_CXX_FLAGS_RELEASE "${CMAKE_CXX_FLAGS_RELEASE}")
			string(REPLACE "/W3" "" CMAKE_C_FLAGS_RELEASE   "${CMAKE_C_FLAGS_RELEASE}")
			string(REPLACE "/W3" "" CMAKE_CXX_FLAGS_DEBUG   "${CMAKE_CXX_FLAGS_DEBUG}")
			string(REPLACE "/W3" "" CMAKE_C_FLAGS_DEBUG     "${CMAKE_C_FLAGS_DEBUG}")
		else()
			set(CMAKE_CXX_FLAGS_RELEASE "${CMAKE_CXX_FLAGS_RELEASE} -w")
			set(CMAKE_C_FLAGS_RELEASE   "${CMAKE_C_FLAGS_RELEASE}   -w")
			set(CMAKE_CXX_FLAGS_DEBUG   "${CMAKE_CXX_FLAGS_DEBUG}   -w")
			set(CMAKE_C_FLAGS_DEBUG     "${CMAKE_C_FLAGS_DEBUG}     -w")
		endif()

		# On Unix we use two dynamic loading libraries dl and ltdl.
		# Preference is for dl on unknown systems as it is specified in POSIX
		# the dynamic loader is used by lua and sqllite.
		if (UNIX)
			if(${CMAKE_SYSTEM_NAME} STREQUAL "FreeBSD")
				set(DYNAMIC_LOADER ltdl)
			else()
				set(DYNAMIC_LOADER dl)
			endif()
		endif()

	
	endif()
endmacro()

macro(enable_profile)
	if(NOT DEFINED ${PROFILE_ENABLED})
		set(PROFILE_ENABLED 1)
		
		# Declare the flags used for profiling builds:
		if (MSVC)
			set (CXX_PROFILING "")
			set (LNK_PROFILING "/PROFILE")
		else()
			set (CXX_PROFILING "-pg")
			set (LNK_PROFILING "-pg")
		endif()


		# Declare the profiling configurations:
		SET(CMAKE_CXX_FLAGS_DEBUGPROFILE
			"${CMAKE_CXX_FLAGS_DEBUG} ${PCXX_ROFILING}"
			CACHE STRING "Flags used by the C++ compiler during profile builds."
			FORCE )
		SET(CMAKE_C_FLAGS_DEBUGPROFILE
			"${CMAKE_C_FLAGS_DEBUG} ${CXX_PROFILING}"
			CACHE STRING "Flags used by the C compiler during profile builds."
			FORCE )
		SET(CMAKE_EXE_LINKER_FLAGS_DEBUGPROFILE
			"${CMAKE_EXE_LINKER_FLAGS_DEBUG} ${LNK_PROFILING}"
			CACHE STRING "Flags used for linking binaries during profile builds."
			FORCE )
		SET(CMAKE_SHARED_LINKER_FLAGS_DEBUGPROFILE
			"${CMAKE_SHARED_LINKER_FLAGS_DEBUG} ${LNK_PROFILING}"
			CACHE STRING "Flags used by the shared libraries linker during profile builds."
			FORCE )
		MARK_AS_ADVANCED(
			CMAKE_CXX_FLAGS_DEBUGPROFILE
			CMAKE_C_FLAGS_DEBUGPROFILE
			CMAKE_EXE_LINKER_FLAGS_DEBUGPROFILE
			CMAKE_SHARED_LINKER_FLAGS_DEBUGPROFILE )

		SET(CMAKE_CXX_FLAGS_RELEASEPROFILE
			"${CMAKE_CXX_FLAGS_RELEASE} ${CXX_PROFILING}"
			CACHE STRING "Flags used by the C++ compiler during profile builds."
			FORCE )
		SET(CMAKE_C_FLAGS_RELEASEPROFILE
			"${CMAKE_C_FLAGS_RELEASE} ${CXX_PROFILING}"
			CACHE STRING "Flags used by the C compiler during profile builds."
			FORCE )
		SET(CMAKE_EXE_LINKER_FLAGS_RELEASEPROFILE
			"${CMAKE_EXE_LINKER_FLAGS_RELEASE} ${LNK_PROFILING}"
			CACHE STRING "Flags used for linking binaries during profile builds."
			FORCE )
		SET(CMAKE_SHARED_LINKER_FLAGS_RELEASEPROFILE
			"${CMAKE_SHARED_LINKER_FLAGS_RELEASE} ${LNK_PROFILING}"
			CACHE STRING "Flags used by the shared libraries linker during profile builds."
			FORCE )
		MARK_AS_ADVANCED(
			CMAKE_CXX_FLAGS_RELEASEPROFILE
			CMAKE_C_FLAGS_RELEASEPROFILE
			CMAKE_EXE_LINKER_FLAGS_RELEASEPROFILE
			CMAKE_SHARED_LINKER_FLAGS_RELEASEPROFILE )
		# The configuration types need to be set after their respective c/cxx/linker flags and before the project directive
		set(CMAKE_CONFIGURATION_TYPES "Debug;Release;DebugProfile;ReleaseProfile" CACHE STRING "" FORCE)
	endif()
endmacro()
    
macro(set_exe_flags)
	if(NOT DEFINED ${EXE_FLAGS_SET})
		set(EXE_FLAGS_SET 1)
	
		# Remove disabling the maximum warning level:
		# clang does not like a command line that reads -Wall -Wextra -w -Wall -Wextra and does not output any warnings
		# We do not do that for MSVC since MSVC produces an awful lot of warnings for its own STL headers;
		# the important warnings are turned on using #pragma in Globals.h
		if (NOT MSVC)
			string(REPLACE "-w" "" CMAKE_CXX_FLAGS_RELEASE "${CMAKE_CXX_FLAGS_RELEASE}")
			string(REPLACE "-w" "" CMAKE_C_FLAGS_RELEASE   "${CMAKE_C_FLAGS_RELEASE}")
			string(REPLACE "-w" "" CMAKE_CXX_FLAGS_DEBUG   "${CMAKE_CXX_FLAGS_DEBUG}")
			string(REPLACE "-w" "" CMAKE_C_FLAGS_DEBUG     "${CMAKE_C_FLAGS_DEBUG}")
			add_flags_cxx("-Wall")
		endif()

	
	endif()
endmacro()