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#!/bin/sh
FVISIBILITY_SUPPORT=no
COMPILER=$1
VERBOSE=$2
RunCompileTest() {
cat >>fvisibility.c << EOF
__attribute__((visibility("default"))) void blah();
#if !defined(__GNUC__)
# error "Visiblility support requires GCC"
#elif __GNUC__ < 4
# error "GCC3 with backported visibility patch is known to miscompile Qt"
#endif
EOF
if [ "$VERBOSE" = "yes" ] ; then
"$COMPILER" -c -fvisibility=hidden fvisibility.c && FVISIBILITY_SUPPORT=yes
else
"$COMPILER" -c -fvisibility=hidden fvisibility.c >/dev/null 2>&1 && FVISIBILITY_SUPPORT=yes
fi
rm -f fvisibility.c fvisibility.o
}
case "$COMPILER" in
aCC*)
;;
icpc)
ICPC_VERSION=`icpc -dumpversion`
case "$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
RunCompileTest
;;
esac
;;
*)
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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