How do I quote []s in m4? I've tried escaping with \, 's, "s, ... I'm out of
tricks... I'm trying to update the poll() checks in libxcb and libXt to allow
poll on darwin11, but the []s are getting stripped. darwin[789]* is becoming
darwin789*, and the \([^ ]*\) in sed is becoming \(^ *\) ...
Here's what I want to do:
case $host_os in
# darwin through Snow Leopard has poll() but can't be used to poll
character devices.
darwin[789]*|darwin10*) ;;
darwin*)
_ac_xorg_macosx_version_min=`echo $CPPFLAGS $CFLAGS | sed
's/^.*-mmacosx-version-min=\([^ ]*\).*$/\1/'`
if test x$_ac_xorg_macosx_version_min = x ; then
_ac_xorg_macosx_version_min=$MACOSX_DEPLOYMENT_TARGET
fi
case $_ac_xorg_macosx_version_min in
10.[0123456]|10.[0123456].*) ;;
*)
AC_CHECK_FUNC(poll, [AC_DEFINE(USE_POLL, 1,
[poll() function is available])], )
;;
esac
unset _ac_xorg_macosx_version_min
;;
*)
AC_CHECK_FUNC(poll, [AC_DEFINE(USE_POLL, 1, [poll() function is
available])], )
;;
esac
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