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Simplify test and use of gcc hidden attribute.

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This commit is contained in:
Mark Adler 2012-03-03 00:20:00 -08:00
parent 2547c6c81f
commit dab7531ecc
3 changed files with 5 additions and 9 deletions
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10
configure vendored
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@ -638,11 +638,7 @@ fi
if test "$gcc" -eq 1; then
echo >> configure.log
cat > $test.c <<EOF
#if ((__GNUC__-0) * 100 + __GNUC_MINOR__-0 >= 303)
# define ZLIB_INTERNAL __attribute__((visibility ("hidden")))
#else
# define ZLIB_INTERNAL
#endif
#define ZLIB_INTERNAL __attribute__((visibility ("hidden")))
int ZLIB_INTERNAL foo;
int main()
{
@ -650,10 +646,10 @@ int main()
}
EOF
if tryboth $CC -c $CFLAGS $test.c; then
CFLAGS="$CFLAGS -DHAVE_HIDDEN"
SFLAGS="$SFLAGS -DHAVE_HIDDEN"
echo "Checking for attribute(visibility) support... Yes." | tee -a configure.log
else
CFLAGS="$CFLAGS -DNO_VIZ"
SFLAGS="$SFLAGS -DNO_VIZ"
echo "Checking for attribute(visibility) support... No." | tee -a configure.log
fi
fi

2
gzguts.h
View File

@ -12,7 +12,7 @@
# endif
#endif
#if ((__GNUC__-0) * 100 + __GNUC_MINOR__-0) >= 303 && !defined(NO_VIZ)
#ifdef HAVE_HIDDEN
# define ZLIB_INTERNAL __attribute__((visibility ("hidden")))
#else
# define ZLIB_INTERNAL

2
zutil.h
View File

@ -13,7 +13,7 @@
#ifndef ZUTIL_H
#define ZUTIL_H
#if ((__GNUC__-0) * 100 + __GNUC_MINOR__-0) >= 303 && !defined(NO_VIZ)
#ifdef HAVE_HIDDEN
# define ZLIB_INTERNAL __attribute__((visibility ("hidden")))
#else
# define ZLIB_INTERNAL