hedgewars-draft: cmake_modules/compilerchecks.cmake@a0fef7134ade (annotated)

9152 c884e40dca9e move compiler checks in a separate cmake module koda parents: diff changeset	1
c884e40dca9e move compiler checks in a separate cmake module koda parents: diff changeset	2	#TESTING TIME
c884e40dca9e move compiler checks in a separate cmake module koda parents: diff changeset	3	include(CheckCCompilerFlag)
c884e40dca9e move compiler checks in a separate cmake module koda parents: diff changeset	4	#when you need to check for a linker flag, just leave the argument of "check_c_compiler_flag" empty
c884e40dca9e move compiler checks in a separate cmake module koda parents: diff changeset	5
9159 3e9d4bbc4053 set linker flags where appropriate koda parents: 9156 diff changeset	6	# CMAKE_C{XX}_FLAGS is for compiler flags (c and c++)
3e9d4bbc4053 set linker flags where appropriate koda parents: 9156 diff changeset	7	# CMAKE_EXE_LINKER_FLAGS is for linker flags (also add them to pascal_flags and haskell_flags)
9165 7b0d5388abc4 stack-protector flag needs to be passed to the linker as well koda parents: 9159 diff changeset	8	# CMAKE_SHARED_LIBRARY_<lang>_FLAGS same but for shared libraries
9152 c884e40dca9e move compiler checks in a separate cmake module koda parents: diff changeset	9
9156 6bf5359d5d14 make sure that also CXX sources pick up the flags (although I'm not 100% of the correctness of the tests) koda parents: 9155 diff changeset	10	#TODO: should there be two different checks for C and CXX?
9307 a0fef7134ade tell ya what, let's just disable these tests on some platform for now koda parents: 9298 diff changeset	11	#TODO: can the various if(platform) be avoided in some way?
9156 6bf5359d5d14 make sure that also CXX sources pick up the flags (although I'm not 100% of the correctness of the tests) koda parents: 9155 diff changeset	12
9155 480f483de544 add fstack-protector and fvisibility=hidden to cmake tests koda parents: 9154 diff changeset	13
9307 a0fef7134ade tell ya what, let's just disable these tests on some platform for now koda parents: 9298 diff changeset	14	if(NOT (WIN32 OR (CMAKE_SYSTEM_NAME MATCHES BSD.OS) OR (CMAKE_SYSTEM_NAME MATCHES FreeBSD)))
a0fef7134ade tell ya what, let's just disable these tests on some platform for now koda parents: 9298 diff changeset	15	#stack protection, when found it needs to go in the linker flags too
a0fef7134ade tell ya what, let's just disable these tests on some platform for now koda parents: 9298 diff changeset	16	#it is disabled on win32 because it adds a dll and messes with linker
a0fef7134ade tell ya what, let's just disable these tests on some platform for now koda parents: 9298 diff changeset	17	#some bsd installations reported problems too
a0fef7134ade tell ya what, let's just disable these tests on some platform for now koda parents: 9298 diff changeset	18	#(see 822312 654424 on bugzilla.redhat.com)
a0fef7134ade tell ya what, let's just disable these tests on some platform for now koda parents: 9298 diff changeset	19	check_c_compiler_flag("-fstack-protector-all -fstack-protector" HAVE_STACKPROTECTOR)
a0fef7134ade tell ya what, let's just disable these tests on some platform for now koda parents: 9298 diff changeset	20	if(HAVE_STACKPROTECTOR)
a0fef7134ade tell ya what, let's just disable these tests on some platform for now koda parents: 9298 diff changeset	21	add_flag_append(CMAKE_C_FLAGS "-fstack-protector-all -fstack-protector")
a0fef7134ade tell ya what, let's just disable these tests on some platform for now koda parents: 9298 diff changeset	22	add_flag_append(CMAKE_CXX_FLAGS "-fstack-protector-all -fstack-protector")
a0fef7134ade tell ya what, let's just disable these tests on some platform for now koda parents: 9298 diff changeset	23	add_flag_append(CMAKE_EXE_LINKER_FLAGS "-fstack-protector-all -fstack-protector")
a0fef7134ade tell ya what, let's just disable these tests on some platform for now koda parents: 9298 diff changeset	24	add_flag_append(CMAKE_SHARED_LIBRARY_C_FLAGS "-fstack-protector-all -fstack-protector")
a0fef7134ade tell ya what, let's just disable these tests on some platform for now koda parents: 9298 diff changeset	25	add_flag_append(CMAKE_SHARED_LIBRARY_CXX_FLAGS "-fstack-protector-all -fstack-protector")
a0fef7134ade tell ya what, let's just disable these tests on some platform for now koda parents: 9298 diff changeset	26	endif()
9155 480f483de544 add fstack-protector and fvisibility=hidden to cmake tests koda parents: 9154 diff changeset	27	endif()
480f483de544 add fstack-protector and fvisibility=hidden to cmake tests koda parents: 9154 diff changeset	28
480f483de544 add fstack-protector and fvisibility=hidden to cmake tests koda parents: 9154 diff changeset	29
9152 c884e40dca9e move compiler checks in a separate cmake module koda parents: diff changeset	30
9307 a0fef7134ade tell ya what, let's just disable these tests on some platform for now koda parents: 9298 diff changeset	31	if(UNIX)
a0fef7134ade tell ya what, let's just disable these tests on some platform for now koda parents: 9298 diff changeset	32	#symbol visibility, not supported on Windows (error out then)
a0fef7134ade tell ya what, let's just disable these tests on some platform for now koda parents: 9298 diff changeset	33	check_c_compiler_flag("-fvisibility=hidden" HAVE_VISIBILITY)
a0fef7134ade tell ya what, let's just disable these tests on some platform for now koda parents: 9298 diff changeset	34	if(HAVE_VISIBILITY)
a0fef7134ade tell ya what, let's just disable these tests on some platform for now koda parents: 9298 diff changeset	35	add_flag_append(CMAKE_C_FLAGS "-fvisibility=hidden")
a0fef7134ade tell ya what, let's just disable these tests on some platform for now koda parents: 9298 diff changeset	36	add_flag_append(CMAKE_CXX_FLAGS "-fvisibility=hidden")
a0fef7134ade tell ya what, let's just disable these tests on some platform for now koda parents: 9298 diff changeset	37	endif()
a0fef7134ade tell ya what, let's just disable these tests on some platform for now koda parents: 9298 diff changeset	38
a0fef7134ade tell ya what, let's just disable these tests on some platform for now koda parents: 9298 diff changeset	39	#check for noexecstack on ELF, Gentoo security
a0fef7134ade tell ya what, let's just disable these tests on some platform for now koda parents: 9298 diff changeset	40	set(CMAKE_REQUIRED_FLAGS "-Wl,-z,noexecstack")
a0fef7134ade tell ya what, let's just disable these tests on some platform for now koda parents: 9298 diff changeset	41	check_c_compiler_flag("" HAVE_NOEXECSTACK)
a0fef7134ade tell ya what, let's just disable these tests on some platform for now koda parents: 9298 diff changeset	42	if(HAVE_NOEXECSTACK)
a0fef7134ade tell ya what, let's just disable these tests on some platform for now koda parents: 9298 diff changeset	43	add_linker_flag("-znoexecstack")
9153 354a9803fe91 add relro linker tests (issue 663) koda parents: 9152 diff changeset	44	endif()
354a9803fe91 add relro linker tests (issue 663) koda parents: 9152 diff changeset	45
9307 a0fef7134ade tell ya what, let's just disable these tests on some platform for now koda parents: 9298 diff changeset	46	#check for full relro on ELF, Debian security
a0fef7134ade tell ya what, let's just disable these tests on some platform for now koda parents: 9298 diff changeset	47	set(CMAKE_REQUIRED_FLAGS "-Wl,-zrelro,-znow")
a0fef7134ade tell ya what, let's just disable these tests on some platform for now koda parents: 9298 diff changeset	48	check_c_compiler_flag("" HAVE_RELROFULL)
a0fef7134ade tell ya what, let's just disable these tests on some platform for now koda parents: 9298 diff changeset	49	if(HAVE_RELROFULL)
a0fef7134ade tell ya what, let's just disable these tests on some platform for now koda parents: 9298 diff changeset	50	add_linker_flag("-zrelro")
a0fef7134ade tell ya what, let's just disable these tests on some platform for now koda parents: 9298 diff changeset	51	add_linker_flag("-znow")
a0fef7134ade tell ya what, let's just disable these tests on some platform for now koda parents: 9298 diff changeset	52	else()
a0fef7134ade tell ya what, let's just disable these tests on some platform for now koda parents: 9298 diff changeset	53	#if full relro is not available, try partial relro
a0fef7134ade tell ya what, let's just disable these tests on some platform for now koda parents: 9298 diff changeset	54	set(CMAKE_REQUIRED_FLAGS "-Wl,-zrelro")
a0fef7134ade tell ya what, let's just disable these tests on some platform for now koda parents: 9298 diff changeset	55	check_c_compiler_flag("" HAVE_RELROPARTIAL)
a0fef7134ade tell ya what, let's just disable these tests on some platform for now koda parents: 9298 diff changeset	56	if(HAVE_RELROPARTIAL)
a0fef7134ade tell ya what, let's just disable these tests on some platform for now koda parents: 9298 diff changeset	57	add_linker_flag("-zrelro")
a0fef7134ade tell ya what, let's just disable these tests on some platform for now koda parents: 9298 diff changeset	58	endif()
a0fef7134ade tell ya what, let's just disable these tests on some platform for now koda parents: 9298 diff changeset	59	endif()
9152 c884e40dca9e move compiler checks in a separate cmake module koda parents: diff changeset	60
9307 a0fef7134ade tell ya what, let's just disable these tests on some platform for now koda parents: 9298 diff changeset	61	#this is actually an optimisation
a0fef7134ade tell ya what, let's just disable these tests on some platform for now koda parents: 9298 diff changeset	62	set(CMAKE_REQUIRED_FLAGS "-Wl,--as-needed")
a0fef7134ade tell ya what, let's just disable these tests on some platform for now koda parents: 9298 diff changeset	63	check_c_compiler_flag("" HAVE_ASNEEDED)
a0fef7134ade tell ya what, let's just disable these tests on some platform for now koda parents: 9298 diff changeset	64	if(HAVE_ASNEEDED)
a0fef7134ade tell ya what, let's just disable these tests on some platform for now koda parents: 9298 diff changeset	65	add_linker_flag("--as-needed")
a0fef7134ade tell ya what, let's just disable these tests on some platform for now koda parents: 9298 diff changeset	66	endif()
a0fef7134ade tell ya what, let's just disable these tests on some platform for now koda parents: 9298 diff changeset	67	else(UNIX)
a0fef7134ade tell ya what, let's just disable these tests on some platform for now koda parents: 9298 diff changeset	68	#check for ASLR on Windows Vista or later, requires binutils >= 2.20
a0fef7134ade tell ya what, let's just disable these tests on some platform for now koda parents: 9298 diff changeset	69	set(CMAKE_REQUIRED_FLAGS "-Wl,--nxcompat")
a0fef7134ade tell ya what, let's just disable these tests on some platform for now koda parents: 9298 diff changeset	70	check_c_compiler_flag("" HAVE_WINASLR)
a0fef7134ade tell ya what, let's just disable these tests on some platform for now koda parents: 9298 diff changeset	71	if(HAVE_WINASLR)
a0fef7134ade tell ya what, let's just disable these tests on some platform for now koda parents: 9298 diff changeset	72	add_linker_flag("--nxcompat")
a0fef7134ade tell ya what, let's just disable these tests on some platform for now koda parents: 9298 diff changeset	73	endif()
9152 c884e40dca9e move compiler checks in a separate cmake module koda parents: diff changeset	74
9307 a0fef7134ade tell ya what, let's just disable these tests on some platform for now koda parents: 9298 diff changeset	75	#check for DEP on Windows XP SP2 or later, requires binutils >= 2.20
a0fef7134ade tell ya what, let's just disable these tests on some platform for now koda parents: 9298 diff changeset	76	set(CMAKE_REQUIRED_FLAGS "-Wl,--dynamicbase")
a0fef7134ade tell ya what, let's just disable these tests on some platform for now koda parents: 9298 diff changeset	77	check_c_compiler_flag("" HAVE_WINDEP)
a0fef7134ade tell ya what, let's just disable these tests on some platform for now koda parents: 9298 diff changeset	78	if(HAVE_WINDEP)
a0fef7134ade tell ya what, let's just disable these tests on some platform for now koda parents: 9298 diff changeset	79	add_linker_flag("--dynamicbase")
a0fef7134ade tell ya what, let's just disable these tests on some platform for now koda parents: 9298 diff changeset	80	endif()
a0fef7134ade tell ya what, let's just disable these tests on some platform for now koda parents: 9298 diff changeset	81	endif(UNIX)
a0fef7134ade tell ya what, let's just disable these tests on some platform for now koda parents: 9298 diff changeset	82
9152 c884e40dca9e move compiler checks in a separate cmake module koda parents: diff changeset	83
c884e40dca9e move compiler checks in a separate cmake module koda parents: diff changeset	84	#always unset or these flags will be spread everywhere
c884e40dca9e move compiler checks in a separate cmake module koda parents: diff changeset	85	unset(CMAKE_REQUIRED_FLAGS)
c884e40dca9e move compiler checks in a separate cmake module koda parents: diff changeset	86

author	koda
	Mon, 01 Jul 2013 22:49:28 +0200
changeset 9307	a0fef7134ade
parent 9298	2d88d01bad07
child 9315	15487f7fed42
permissions	-rw-r--r--