Lines Matching refs:ac_envvar
788 ac_envvar=`expr "x$ac_option" : 'x\([^=]*\)='`
790 expr "x$ac_envvar" : ".*[^_$as_cr_alnum]" >/dev/null &&
791 { echo "$as_me: error: invalid variable name: $ac_envvar" >&2
794 eval "$ac_envvar='$ac_optarg'"
795 export $ac_envvar ;;
