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