cmake_modules/compilerchecks.cmake
author nemo
Mon, 17 Jun 2013 10:48:50 -0400
changeset 9195 e653e96b0ec3
parent 9191 fc54667b1203
child 9219 0a4b6bb69f99
permissions -rw-r--r--
Many of the gears treat non-0 timer as overridden. Added that check in more places so that lua could use this a tiny bit more consistently. Also preserve state for jetpack.
Ignore whitespace changes - Everywhere: Within whitespace: At end of lines:
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?
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
    11
9191
fc54667b1203 fix launching on windows
koda
parents: 9169
diff changeset
    12
#stack protection, when found it needs to go in the linker flags too
fc54667b1203 fix launching on windows
koda
parents: 9169
diff changeset
    13
#it is disabled on win32 because it adds a dll and messes with linker
fc54667b1203 fix launching on windows
koda
parents: 9169
diff changeset
    14
#(see 822312 654424 on bugzilla.redhat.com)
9167
ecf19179b37e protect all types with -fstack-protector-all
koda
parents: 9165
diff changeset
    15
check_c_compiler_flag("-fstack-protector-all -fstack-protector" HAVE_STACKPROTECTOR)
9191
fc54667b1203 fix launching on windows
koda
parents: 9169
diff changeset
    16
if(HAVE_STACKPROTECTOR AND (NOT WIN32))
9167
ecf19179b37e protect all types with -fstack-protector-all
koda
parents: 9165
diff changeset
    17
    set(CMAKE_C_FLAGS "${CMAKE_C_FLAGS} -fstack-protector-all -fstack-protector")
ecf19179b37e protect all types with -fstack-protector-all
koda
parents: 9165
diff changeset
    18
    set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -fstack-protector-all -fstack-protector")
ecf19179b37e protect all types with -fstack-protector-all
koda
parents: 9165
diff changeset
    19
    set(CMAKE_EXE_LINKER_FLAGS "${CMAKE_EXE_LINKER_FLAGS} -fstack-protector-all -fstack-protector")
ecf19179b37e protect all types with -fstack-protector-all
koda
parents: 9165
diff changeset
    20
    set(CMAKE_SHARED_LIBRARY_C_FLAGS  "${CMAKE_SHARED_LIBRARY_C_FLAGS} -fstack-protector-all -fstack-protector")
ecf19179b37e protect all types with -fstack-protector-all
koda
parents: 9165
diff changeset
    21
    set(CMAKE_SHARED_LIBRARY_CXX_FLAGS  "${CMAKE_SHARED_LIBRARY_C_FLAGS} -fstack-protector-all -fstack-protector")
9155
480f483de544 add fstack-protector and fvisibility=hidden to cmake tests
koda
parents: 9154
diff changeset
    22
endif()
480f483de544 add fstack-protector and fvisibility=hidden to cmake tests
koda
parents: 9154
diff changeset
    23
9169
ef53201e95ec visibility unsupported on windows
koda
parents: 9167
diff changeset
    24
#symbol visibility, not supported on Windows (so we error out to avoid spam)
ef53201e95ec visibility unsupported on windows
koda
parents: 9167
diff changeset
    25
check_c_compiler_flag("-fvisibility=hidden -Werror" HAVE_VISIBILITY)
ef53201e95ec visibility unsupported on windows
koda
parents: 9167
diff changeset
    26
if(HAVE_VISIBILITY)
9155
480f483de544 add fstack-protector and fvisibility=hidden to cmake tests
koda
parents: 9154
diff changeset
    27
    set(CMAKE_C_FLAGS "${CMAKE_C_FLAGS} -fvisibility=hidden")
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
    28
    set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -fvisibility=hidden")
9155
480f483de544 add fstack-protector and fvisibility=hidden to cmake tests
koda
parents: 9154
diff changeset
    29
endif()
480f483de544 add fstack-protector and fvisibility=hidden to cmake tests
koda
parents: 9154
diff changeset
    30
480f483de544 add fstack-protector and fvisibility=hidden to cmake tests
koda
parents: 9154
diff changeset
    31
9152
c884e40dca9e move compiler checks in a separate cmake module
koda
parents:
diff changeset
    32
#check for noexecstack on ELF, Gentoo security
c884e40dca9e move compiler checks in a separate cmake module
koda
parents:
diff changeset
    33
set(CMAKE_REQUIRED_FLAGS "-Wl,-z,noexecstack")
c884e40dca9e move compiler checks in a separate cmake module
koda
parents:
diff changeset
    34
check_c_compiler_flag("" HAVE_NOEXECSTACK)
c884e40dca9e move compiler checks in a separate cmake module
koda
parents:
diff changeset
    35
if(HAVE_NOEXECSTACK)
c884e40dca9e move compiler checks in a separate cmake module
koda
parents:
diff changeset
    36
    list(APPEND pascal_flags "-k-z" "-knoexecstack")
9154
a43406054648 also apply linker flags to haskell programs
koda
parents: 9153
diff changeset
    37
    list(APPEND haskell_flags "-optl" "-z" "-optl" "noexecstack")
9159
3e9d4bbc4053 set linker flags where appropriate
koda
parents: 9156
diff changeset
    38
    set(CMAKE_EXE_LINKER_FLAGS "${CMAKE_EXE_LINKER_FLAGS} ${CMAKE_REQUIRED_FLAGS}")
9152
c884e40dca9e move compiler checks in a separate cmake module
koda
parents:
diff changeset
    39
endif()
c884e40dca9e move compiler checks in a separate cmake module
koda
parents:
diff changeset
    40
9153
354a9803fe91 add relro linker tests (issue 663)
koda
parents: 9152
diff changeset
    41
#check for full relro on ELF, Debian security
354a9803fe91 add relro linker tests (issue 663)
koda
parents: 9152
diff changeset
    42
set(CMAKE_REQUIRED_FLAGS "-Wl,-z,relro,-z,now")
354a9803fe91 add relro linker tests (issue 663)
koda
parents: 9152
diff changeset
    43
check_c_compiler_flag("" HAVE_RELROFULL)
354a9803fe91 add relro linker tests (issue 663)
koda
parents: 9152
diff changeset
    44
if(HAVE_RELROFULL)
354a9803fe91 add relro linker tests (issue 663)
koda
parents: 9152
diff changeset
    45
    list(APPEND pascal_flags "-k-z" "-krelro" "-k-z" "-know")
9154
a43406054648 also apply linker flags to haskell programs
koda
parents: 9153
diff changeset
    46
    list(APPEND haskell_flags "-optl" "-z" "-optl" "relro" "-optl" "-z" "-optl" "now")
9159
3e9d4bbc4053 set linker flags where appropriate
koda
parents: 9156
diff changeset
    47
    set(CMAKE_EXE_LINKER_FLAGS "${CMAKE_EXE_LINKER_FLAGS} ${CMAKE_REQUIRED_FLAGS}")
9153
354a9803fe91 add relro linker tests (issue 663)
koda
parents: 9152
diff changeset
    48
else()
354a9803fe91 add relro linker tests (issue 663)
koda
parents: 9152
diff changeset
    49
    #if full relro is not available, try partial relro
354a9803fe91 add relro linker tests (issue 663)
koda
parents: 9152
diff changeset
    50
    set(CMAKE_REQUIRED_FLAGS "-Wl,-z,relro")
354a9803fe91 add relro linker tests (issue 663)
koda
parents: 9152
diff changeset
    51
    check_c_compiler_flag("" HAVE_RELROPARTIAL)
354a9803fe91 add relro linker tests (issue 663)
koda
parents: 9152
diff changeset
    52
    if(HAVE_RELROPARTIAL)
354a9803fe91 add relro linker tests (issue 663)
koda
parents: 9152
diff changeset
    53
        list(APPEND pascal_flags "-k-z" "-krelro")
9154
a43406054648 also apply linker flags to haskell programs
koda
parents: 9153
diff changeset
    54
        list(APPEND haskell_flags "-optl" "-z" "-optl" "relro")
9159
3e9d4bbc4053 set linker flags where appropriate
koda
parents: 9156
diff changeset
    55
        set(CMAKE_EXE_LINKER_FLAGS "${CMAKE_EXE_LINKER_FLAGS} ${CMAKE_REQUIRED_FLAGS}")
9153
354a9803fe91 add relro linker tests (issue 663)
koda
parents: 9152
diff changeset
    56
    endif()
354a9803fe91 add relro linker tests (issue 663)
koda
parents: 9152
diff changeset
    57
endif()
354a9803fe91 add relro linker tests (issue 663)
koda
parents: 9152
diff changeset
    58
9152
c884e40dca9e move compiler checks in a separate cmake module
koda
parents:
diff changeset
    59
#check for ASLR on Windows Vista or later, requires binutils >= 2.20
c884e40dca9e move compiler checks in a separate cmake module
koda
parents:
diff changeset
    60
set(CMAKE_REQUIRED_FLAGS "-Wl,--nxcompat")
c884e40dca9e move compiler checks in a separate cmake module
koda
parents:
diff changeset
    61
check_c_compiler_flag("" HAVE_WINASLR)
c884e40dca9e move compiler checks in a separate cmake module
koda
parents:
diff changeset
    62
if(HAVE_WINASLR)
c884e40dca9e move compiler checks in a separate cmake module
koda
parents:
diff changeset
    63
    list(APPEND pascal_flags "-k--nxcompat")
9154
a43406054648 also apply linker flags to haskell programs
koda
parents: 9153
diff changeset
    64
    list(APPEND haskell_flags "-optl" "--nxcompat")
9159
3e9d4bbc4053 set linker flags where appropriate
koda
parents: 9156
diff changeset
    65
    set(CMAKE_EXE_LINKER_FLAGS "${CMAKE_EXE_LINKER_FLAGS} ${CMAKE_REQUIRED_FLAGS}")
9152
c884e40dca9e move compiler checks in a separate cmake module
koda
parents:
diff changeset
    66
endif()
c884e40dca9e move compiler checks in a separate cmake module
koda
parents:
diff changeset
    67
c884e40dca9e move compiler checks in a separate cmake module
koda
parents:
diff changeset
    68
#check for DEP on Windows XP SP2 or later, requires binutils >= 2.20
c884e40dca9e move compiler checks in a separate cmake module
koda
parents:
diff changeset
    69
set(CMAKE_REQUIRED_FLAGS "-Wl,--dynamicbase")
c884e40dca9e move compiler checks in a separate cmake module
koda
parents:
diff changeset
    70
check_c_compiler_flag("" HAVE_WINDEP)
c884e40dca9e move compiler checks in a separate cmake module
koda
parents:
diff changeset
    71
if(HAVE_WINDEP)
c884e40dca9e move compiler checks in a separate cmake module
koda
parents:
diff changeset
    72
    list(APPEND pascal_flags "-k--dynamicbase")
9154
a43406054648 also apply linker flags to haskell programs
koda
parents: 9153
diff changeset
    73
    list(APPEND haskell_flags "-optl" "--dynamicbase")
9159
3e9d4bbc4053 set linker flags where appropriate
koda
parents: 9156
diff changeset
    74
    set(CMAKE_EXE_LINKER_FLAGS "${CMAKE_EXE_LINKER_FLAGS} ${CMAKE_REQUIRED_FLAGS}")
9152
c884e40dca9e move compiler checks in a separate cmake module
koda
parents:
diff changeset
    75
endif()
c884e40dca9e move compiler checks in a separate cmake module
koda
parents:
diff changeset
    76
c884e40dca9e move compiler checks in a separate cmake module
koda
parents:
diff changeset
    77
c884e40dca9e move compiler checks in a separate cmake module
koda
parents:
diff changeset
    78
#always unset or these flags will be spread everywhere
c884e40dca9e move compiler checks in a separate cmake module
koda
parents:
diff changeset
    79
unset(CMAKE_REQUIRED_FLAGS)
c884e40dca9e move compiler checks in a separate cmake module
koda
parents:
diff changeset
    80