config.tests/unix/fvisibility.test

   1 #!/bin/sh
   2
   3 FVISIBILITY_SUPPORT=no
   4 COMPILER=$1
   5 VERBOSE=$2
   6
   7 RunCompileTest() {
   8     cat >>fvisibility.c << EOF
   9 __attribute__((visibility("default"))) void blah();
  10 #if !defined(__GNUC__)
  11 # error "Visiblility support requires GCC"
  12 #elif __GNUC__ < 4
  13 # error "GCC3 with backported visibility patch is known to miscompile Qt"
  14 #endif
  15 EOF
  16
  17     if [ "$VERBOSE" = "yes" ] ; then
  18         "$COMPILER" -c -fvisibility=hidden fvisibility.c && FVISIBILITY_SUPPORT=yes
  19     else
  20         "$COMPILER" -c -fvisibility=hidden fvisibility.c >/dev/null 2>&1 && FVISIBILITY_SUPPORT=yes
  21     fi
  22     rm -f fvisibility.c fvisibility.o
  23 }
  24
  25 case "$COMPILER" in
  26 aCC*)
  27     ;;
  28
  29 icpc)
  30     ICPC_VERSION=`icpc -dumpversion`
  31     case "$ICPC_VERSION" in
  32     8.*|9.*|10.0)
  33         # 8.x, 9.x, and 10.0 don't support symbol visibility
  34         ;;
  35     *)
  36         # the compile test works for the intel compiler because it mimics gcc's behavior
  37         RunCompileTest
  38         ;;
  39     esac
  40     ;;
  41
  42     *)
  43     RunCompileTest
  44     ;;
  45 esac
  46
  47 # done
  48 if [ "$FVISIBILITY_SUPPORT" != "yes" ]; then
  49     [ "$VERBOSE" = "yes" ] && echo "Symbol visibility control disabled."
  50     exit 0
  51 else
  52     [ "$VERBOSE" = "yes" ] && echo "Symbol visibility control enabled."
  53     exit 1
  54 fi