Lines Matching refs:ac_envvar
634 ac_envvar=`expr "x$ac_option" : 'x\([^=]*\)='`636 expr "x$ac_envvar" : ".*[^_$as_cr_alnum]" >/dev/null &&637 { echo "$as_me: error: invalid variable name: $ac_envvar" >&2640 eval "$ac_envvar='$ac_optarg'"641 export $ac_envvar ;;