diff -aur apcupsd-3.9.9-orig/autoconf/configure.in apcupsd-3.9.9/autoconf/configure.in
--- apcupsd-3.9.9-orig/autoconf/configure.in	Mon May 13 11:42:09 2002
+++ apcupsd-3.9.9/autoconf/configure.in	Tue Sep 10 15:24:27 2002
@@ -1043,6 +1043,9 @@
 elif test -f /etc/slackware-version
 then
 	DISTNAME=slackware
+elif test -f /etc/gentoo-version
+then
+	DISTNAME=gentoo
 elif test -f /etc/engarde-version
 then
 	DISTNAME=engarde
@@ -1192,6 +1195,14 @@
 		platforms/freebsd/apccontrol.sh \
 		"
   ;;
+gentoo)
+	DISTVER=`uname -r`
+	DFILES="\
+		platforms/apccontrol \
+		platforms/gentoo/Makefile \
+		platforms/gentoo/apcupsd \
+		"
+  ;;
 hpux)
 	DISTVER=`uname -r`
 	DFILES="\