1 

     2 #TESTING TIME

     3 include(CheckCCompilerFlag)

     4 #when you need to check for a linker flag, just leave the argument of "check_c_compiler_flag" empty

     5 

     6 

     7 #check for noexecstack on ELF, Gentoo security

     8 set(CMAKE_REQUIRED_FLAGS "-Wl,-z,noexecstack")

     9 check_c_compiler_flag("" HAVE_NOEXECSTACK)

    10 if(HAVE_NOEXECSTACK)

    11     list(APPEND pascal_flags "-k-z" "-knoexecstack")

    12     set(CMAKE_C_FLAGS "${CMAKE_C_FLAGS} ${CMAKE_REQUIRED_FLAGS}")

    13 endif()

    14 

    15 #check for ASLR on Windows Vista or later, requires binutils >= 2.20

    16 set(CMAKE_REQUIRED_FLAGS "-Wl,--nxcompat")

    17 check_c_compiler_flag("" HAVE_WINASLR)

    18 if(HAVE_WINASLR)

    19     list(APPEND pascal_flags "-k--nxcompat")

    20     set(CMAKE_C_FLAGS "${CMAKE_C_FLAGS} ${CMAKE_REQUIRED_FLAGS}")

    21 endif()

    22 

    23 #check for DEP on Windows XP SP2 or later, requires binutils >= 2.20

    24 set(CMAKE_REQUIRED_FLAGS "-Wl,--dynamicbase")

    25 check_c_compiler_flag("" HAVE_WINDEP)

    26 if(HAVE_WINDEP)

    27     list(APPEND pascal_flags "-k--dynamicbase")

    28     set(CMAKE_C_FLAGS "${CMAKE_C_FLAGS} ${CMAKE_REQUIRED_FLAGS}")

    29 endif()

    30 

    31 

    32 #always unset or these flags will be spread everywhere

    33 unset(CMAKE_REQUIRED_FLAGS)

    34