config.tests/unix/fvisibility.test

   1 #!/bin/sh
   2
   3 FVISIBILITY_SUPPORT=no
   4 COMPILER=$1
   5 VERBOSE=$2
   6
   7 CMDLINE=
   8
   9
  10 RunCompileTest() {
  11     cat >>fvisibility.c << EOF
  12 #if defined(__GNUC__)
  13 #   if (__GNUC__ < 4)
  14 #      error "GCC3 with backported visibility patch is known to miscompile Qt"
  15 #   endif
  16 __attribute((visibility("default"))) void blah();
  17 #elif defined(__SUNPRO_CC)
  18 #   if (__SUNPRO_CC < 0x0550)
  19 #      error "SunStudio 8 or later is required for ELF visibility"
  20 #   endif
  21 __global void blah();
  22 #else
  23 #   error "GCC4+ or SunStudio 8+ are required to support ELF visibility"
  24 #endif
  25 EOF
  26
  27     if [ "$VERBOSE" = "yes" ] ; then
  28         "$COMPILER" -c $CMDLINE fvisibility.c && FVISIBILITY_SUPPORT=yes
  29     else
  30         "$COMPILER" -c $CMDLINE fvisibility.c >/dev/null 2>&1 && FVISIBILITY_SUPPORT=yes
  31     fi
  32     rm -f fvisibility.c fvisibility.o
  33 }
  34
  35
  36 case "$COMPILER" in
  37 gcc|g++)
  38     CMDLINE="-fvisibility=hidden"
  39     RunCompileTest
  40    ;;
  41
  42 aCC*)
  43     ;;
  44
  45 icpc)
  46     ICPC_VERSION=`icpc -dumpversion`
  47     case "$ICPC_VERSION" in
  48     8.*|9.*|10.0)
  49         # 8.x, 9.x, and 10.0 don't support symbol visibility
  50         ;;
  51     *)
  52         # the compile test works for the intel compiler because it mimics gcc's behavior
  53         CMDLINE="-fvisibility=hidden"
  54         RunCompileTest
  55         ;;
  56     esac
  57     ;;
  58
  59 CC)
  60    # This should be SunStudio.  If not, it'll get caught.
  61    CMDLINE="-xldscope=hidden"
  62    RunCompileTest
  63    ;;
  64 esac
  65
  66 # done
  67 if [ "$FVISIBILITY_SUPPORT" != "yes" ]; then
  68     [ "$VERBOSE" = "yes" ] && echo "Symbol visibility control disabled."
  69     exit 0
  70 else
  71     [ "$VERBOSE" = "yes" ] && echo "Symbol visibility control enabled."
  72     exit 1
  73 fi