--- /tmp/makechrootpkg	2008-01-13 00:28:05.000000000 +0100
+++ /usr/sbin/makechrootpkg	2008-01-13 17:20:36.000000000 +0100
@@ -44,6 +44,7 @@
     case "${arg}" in
         c) chrootdir="$OPTARG" ;;
         h|?) usage ;;
+        R) MAKEPKG_ARGS="$MAKEPKG_ARGS -$arg $OPTARG" ; REBUILD=1 ;;
         *) MAKEPKG_ARGS="$MAKEPKG_ARGS -$arg $OPTARG" ;;
     esac
 done
@@ -90,6 +91,7 @@
 
 echo "moving build files to chroot"
 [ -d "$uniondir/build" ] || mkdir "$uniondir/build"
+[ "$REBUILD" = "1" ] || rm -rf "$uniondir/build/*"
 chown -R nobody "$uniondir/build"
 
 source PKGBUILD
@@ -129,7 +131,6 @@
 else	
     source ${WORKDIR}/PKGBUILD
     mv ${chrootdir}/rw/build/${pkgname}-${pkgver}-*.pkg.tar.gz ${WORKDIR}
-    rm -rf ${chrootdir}/rw/build/*
     echo "Build complete"
 fi