diff -up sudo-1.7.2p1/configure.in.envdebug sudo-1.7.2p1/configure.in

--- sudo-1.7.2p1/configure.in.envdebug	2009-10-30 12:18:09.000000000 +0100

+++ sudo-1.7.2p1/configure.in	2009-10-30 12:19:01.000000000 +0100

@@ -1214,7 +1214,7 @@ AC_ARG_ENABLE(env_debug,

 [AS_HELP_STRING([--enable-env-debug], [Whether to enable environment debugging.])],

 [ case "$enableval" in

     yes)	AC_MSG_RESULT(yes)

-		AC_DEFINE(ENV_DEBUG)

+		AC_DEFINE(ENV_DEBUG, [], [Environment debugging.])

 		;;

     no)		AC_MSG_RESULT(no)

 		;;