dnl CF_WITH_PATHLIST version: 7 updated: 2010/10/23 16:10:30
dnl ----------------
dnl Process an option specifying a list of colon-separated paths.
dnl
dnl $1 = option name
dnl $2 = help-text
dnl $3 = environment variable to set
dnl $4 = default value, shown in the help-message, must be a constant
dnl $5 = default value, if it's an expression & cannot be in the help-message
dnl $6 = flag to tell if we want to define or substitute
dnl
AC_DEFUN([CF_WITH_PATHLIST],[
AC_REQUIRE([CF_PATHSEP])
AC_ARG_WITH($1,[$2 ](default: ifelse($4,,empty,$4)),,
ifelse($4,,[withval=${$3}],[withval=${$3:-ifelse($5,,$4,$5)}]))dnl

IFS="${IFS:- 	}"; ac_save_ifs="$IFS"; IFS="${PATH_SEPARATOR}"
cf_dst_path=
for cf_src_path in $withval
do
  CF_PATH_SYNTAX(cf_src_path)
  test -n "$cf_dst_path" && cf_dst_path="${cf_dst_path}:"
  cf_dst_path="${cf_dst_path}${cf_src_path}"
done
IFS="$ac_save_ifs"

ifelse($6,define,[
# Strip single quotes from the value, e.g., when it was supplied as a literal
# for $4 or $5.
case $cf_dst_path in #(vi
\'*)
  cf_dst_path=`echo $cf_dst_path |sed -e s/\'// -e s/\'\$//`
  ;;
esac
cf_dst_path=`echo "$cf_dst_path" | sed -e 's/\\\\/\\\\\\\\/g'`
])

eval '$3="$cf_dst_path"'
AC_SUBST($3)dnl

])dnl
