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AC_DEFUN([AC_DEF_API_EXPORT_ATTRS],
[AC_REQUIRE([gl_VISIBILITY])
AC_REQUIRE([AC_CANONICAL_HOST])
case $host in
*win32* | *mingw32* | *cygwin* | *windows*)
os_support=win32
;;
*)
os_support=other
;;
esac
if test $HAVE_VISIBILITY = 1 -a $os_support != "win32"; then
AC_DEFINE(LOCAL_FN, [__attribute__ ((visibility ("hidden")))],
[attribute of the non-exported symbols])
AC_DEFINE(API_EXPORTED, [__attribute__ ((visibility ("default")))],
[attribute of the symbols exported in the API])
else
AC_DEFINE(LOCAL_FN, [], [attribute of the non-exported symbols])
AC_DEFINE(API_EXPORTED, [], [attribute of the symbols exported in the API])
fi
])
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