+ case $host_os in
+ rhapsody* | darwin1.[[012]])
+ _LT_AC_TAGVAR(allow_undefined_flag, $1)='${wl}-undefined ${wl}suppress'
+ ;;
+ *) # Darwin 1.3 on
+ if test -z ${MACOSX_DEPLOYMENT_TARGET} ; then
+ _LT_AC_TAGVAR(allow_undefined_flag, $1)='${wl}-flat_namespace ${wl}-undefined ${wl}suppress'
+ else
+ case ${MACOSX_DEPLOYMENT_TARGET} in
+ 10.[[012]])
+ _LT_AC_TAGVAR(allow_undefined_flag, $1)='${wl}-flat_namespace ${wl}-undefined ${wl}suppress'
+ ;;
+ 10.*)
+ _LT_AC_TAGVAR(allow_undefined_flag, $1)='${wl}-undefined ${wl}dynamic_lookup'
+ ;;
+ esac
+ fi
+ ;;
+ esac