AC_INIT() AC_DEFUN(REQUIRE_PATH,[ AC_SUBST($1_path) if test "[$]$1_path" = ""; then AC_ERROR(Cannot find $1) fi ]) AC_ARG_WITH(kinit, [ --with-kinit[=PATH] kinit is located at PATH],[ if test "$withval" != "no" -a "$withval" != "yes"; then kinit_path="$withval" fi ]) REQUIRE_PATH(kinit) AC_ARG_WITH(aklog, [ --with-aklog[=PATH] aklog is located at PATH],[ if test "$withval" != "no" -a "$withval" != "yes"; then aklog_path="$withval" fi ]) REQUIRE_PATH(aklog) AC_OUTPUT(Makefile) AC_OUTPUT(renew)