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#!/bin/sh
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FVISIBILITY_SUPPORT=no
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COMPILER=$1
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VERBOSE=$2
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RunCompileTest() {
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cat >>fvisibility.c << EOF
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__attribute__((visibility("default"))) void blah();
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#if !defined(__GNUC__)
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# error "Visiblility support requires GCC"
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#elif __GNUC__ < 4
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# error "GCC3 with backported visibility patch is known to miscompile Qt"
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#endif
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EOF
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if [ "$VERBOSE" = "yes" ] ; then
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"$COMPILER" -c -fvisibility=hidden fvisibility.c && FVISIBILITY_SUPPORT=yes
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else
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"$COMPILER" -c -fvisibility=hidden fvisibility.c >/dev/null 2>&1 && FVISIBILITY_SUPPORT=yes
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fi
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rm -f fvisibility.c fvisibility.o
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}
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case "$COMPILER" in
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aCC*)
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;;
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icpc)
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ICPC_VERSION=`icpc -dumpversion`
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case "$ICPC_VERSION" in
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8.*|9.*|10.0)
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# 8.x, 9.x, and 10.0 don't support symbol visibility
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;;
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*)
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# the compile test works for the intel compiler because it mimics gcc's behavior
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RunCompileTest
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;;
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esac
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;;
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*)
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RunCompileTest
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;;
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esac
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# done
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if [ "$FVISIBILITY_SUPPORT" != "yes" ]; then
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[ "$VERBOSE" = "yes" ] && echo "Symbol visibility control disabled."
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exit 0
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else
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[ "$VERBOSE" = "yes" ] && echo "Symbol visibility control enabled."
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exit 1
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fi
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