diff --git a/genpkg b/genpkg
index ac69542..2033f50 100755
--- a/genpkg
+++ b/genpkg
@@ -345,6 +345,10 @@ pkggen() {
 			mkdir -p $DEVTMPROOT/$DIR
 			mv $i $DEVTMPROOT/$DIR
 		done
+		if [ -f $TMPROOT/tmp/preinstall ]; then
+			bzip2 -d -c $TMPROOT/tmp/preinstall $TMPROOT/../$$/preinstall
+			rm $TMPROOT/tmp/preinstall 
+		fi
 		sync
 		InitDispatch
 		if [ ! `find . -type f|wc -l` == "0" ]; then
@@ -443,6 +447,11 @@ pkggen() {
 				LINE=$LINE"0 "
 			fi
 		done
+		if [ -f preinstall ]; then
+			LINE=$LINE"`wc -c meta|awk '{print $1}'` "
+		else
+			LINE=$LINE"0 "
+		fi
 		echo $LINE >$DISTTARGET/$SRCPATH/$PKGNAME
 		if [ -f dep ]; then
 			cat dep >>$DISTTARGET/$SRCPATH/$PKGNAME
@@ -455,6 +464,9 @@ pkggen() {
 				cat $i >>$DISTTARGET/$SRCPATH/$PKGNAME
 			fi
 		done
+		if [ -f preinstall ]; then
+			cat preinstall >>$DISTTARGET/$SRCPATH/$PKGNAME
+		fi
 		cd ..
 		rm -rf $TMPROOT/../$$
 	fi
@@ -475,7 +487,7 @@ pkggen() {
 			else
 				INSTALLOPTS=$INSTALLOPTS" -fi"
 			fi
-			installpkg -o $INSTALLOPTS $DISTTARGET/$SRCPATH/$PKGNAME
+			installpkg -no $INSTALLOPTS $DISTTARGET/$SRCPATH/$PKGNAME
 			CheckError "Installation of $PKGNAME failed"
 		else
 			echo "installing $DISTTARGET/$SRCPATH/$PKGNAME"
@@ -765,7 +777,7 @@ if [ ! "$C_FLAG" == "0" ]; then
 				if [ "$CHECKFLAGS" == "0" ]; then
 					INSTALLOPTS="-o"
 				fi
-				installpkg $INSTALLOPTS -i $DISTTARGET/$SRCPATH/$PKGNAME
+				installpkg $INSTALLOPTS -noi $DISTTARGET/$SRCPATH/$PKGNAME
 			fi
 			DEINSTALL=0
 			INSTALL=0