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#!/bin/sh
FVISIBILITY_SUPPORT=no
COMPILER=$1
VERBOSE=$2
CMDLINE=
RunCompileTest() {
cat >>fvisibility.c << EOF
#if defined(__GNUC__)
# if (__GNUC__ < 4)
# error "GCC3 with backported visibility patch is known to miscompile Qt"
# endif
__attribute((visibility("default"))) void blah();
#elif defined(__SUNPRO_CC)
# if (__SUNPRO_CC < 0x0550)
# error "SunStudio 8 or later is required for ELF visibility"
# endif
__global void blah();
#else
# error "GCC4+ or SunStudio 8+ are required to support ELF visibility"
#endif
EOF
if [ "$VERBOSE" = "yes" ] ; then
"$COMPILER" -c $CMDLINE fvisibility.c && FVISIBILITY_SUPPORT=yes
else
"$COMPILER" -c $CMDLINE fvisibility.c >/dev/null 2>&1 && FVISIBILITY_SUPPORT=yes
fi
rm -f fvisibility.c fvisibility.o
}
case "$COMPILER" in
gcc|g++)
CMDLINE="-fvisibility=hidden"
RunCompileTest
;;
aCC*)
;;
icpc)
ICPC_VERSION=`icpc -dumpversion`
case "$ICPC_VERSION" in
8.*|9.*|10.0)
# 8.x, 9.x, and 10.0 don't support symbol visibility
;;
*)
# the compile test works for the intel compiler because it mimics gcc's behavior
CMDLINE="-fvisibility=hidden"
RunCompileTest
;;
esac
;;
CC)
# This should be SunStudio. If not, it'll get caught.
CMDLINE="-xldscope=hidden"
RunCompileTest
;;
esac
# done
if [ "$FVISIBILITY_SUPPORT" != "yes" ]; then
[ "$VERBOSE" = "yes" ] && echo "Symbol visibility control disabled."
exit 0
else
[ "$VERBOSE" = "yes" ] && echo "Symbol visibility control enabled."
exit 1
fi
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