Index: configure.in
===================================================================
RCS file: /home/cvs/debian/fetchmail/configure.in,v
retrieving revision 1.1.1.9
diff -u -r1.1.1.9 configure.in
--- configure.in	2001/03/12 17:41:11	1.1.1.9
+++ configure.in	2001/03/12 17:43:17
@@ -231,18 +231,46 @@
 # a sendmail alias) do the right thing in this circumstance.
 #
 AC_PATH_PROG(procmail, procmail, "", $PATH:/usr/sbin)
-if test "$procmail"
-then
-	echo "Found procmail, will use it as a fallback MDA."
-	AC_DEFINE(FALLBACK_MDA, "$procmail -d %T")
-else
-	AC_PATH_PROG(sendmail, sendmail, "", $PATH:/usr/sbin)
-	if test "$sendmail"
-	then
-		echo "Found sendmail, will use it as a fallback MDA."
-		AC_DEFINE(FALLBACK_MDA, "$sendmail %T")
-	fi	
-fi
+AC_PATH_PROG(sendmail, sendmail, "", $PATH:/usr/sbin)
+
+###	use option --disable-fallback to disable fallback MDA
+###	use option --enable-fallback=procmail or 
+###		   --enable-fallback=sendmail to select
+AC_ARG_ENABLE(fallback,
+	[  --enable-fallback=procmail    enable procmail as fallback (default)
+  --enable-fallback=sendmail    enable /usr/sbin/sendmail as fallback
+  --enable-fallback=no          disable fallback],,[enable_fallback=auto])
+
+case "$enable_fallback" in
+	sendmail)	if test -z "$sendmail" ; then 
+				AC_ERROR([Sendmail selected as fallback, but not found])
+				#not reached
+			fi
+			AC_DEFINE(FALLBACK_MDA, "$sendmail %T")
+			echo "Will use $sendmail as fallback MDA."
+			;;
+	procmail)	if test -z "$procmail" ; then
+				AC_ERROR([procmail selected as fallback, but not found])
+				#not reached
+			fi
+			AC_DEFINE(FALLBACK_MDA, "$procmail -d %T")
+			echo "Will use $procmail as fallback MDA."
+			;;
+	no|unset)	echo "Will not use a fallback MDA"
+			;;
+	auto|yes|set)	if test -n "$procmail" ; then
+				AC_DEFINE(FALLBACK_MDA, "$procmail -d %T")
+				echo "Will use $procmail as fallback MDA."
+			elif test -n "$sendmail" ; then
+				AC_DEFINE(FALLBACK_MDA, "$sendmail %T")
+				echo "Will use $sendmail as fallback MDA."
+			else	echo "No fallback MDA available."
+			fi
+			;;
+	*)		AC_ERROR([unkown value for --enable-fallback given: $enable_fallback])
+			#notreached
+			;;
+esac
 
 AC_CHECK_SIZEOF(short)
 AC_CHECK_SIZEOF(int)