build: clean up stale files from a previous build when installing a package build to the staging dir

Signed-off-by: Felix Fietkau <nbd@openwrt.org>

git-svn-id: svn://svn.openwrt.org/openwrt/trunk@36755 3c298f89-4303-0410-b956-a3cf2f4a3e73

include/package.mk

@@ -171,6 +171,11 @@ define Build/DefaultTargets
 	$(foreach hook,$(Hooks/InstallDev/Post),\
 		$(call $(hook),$(TMP_DIR)/stage-$(PKG_NAME),$(TMP_DIR)/stage-$(PKG_NAME)/host)$(sep)\
 	)
+	if [ -f $(STAGING_DIR)/packages/$(STAGING_FILES_LIST) ]; then \
+		$(SCRIPT_DIR)/clean-package.sh \
+			"$(STAGING_DIR)/packages/$(STAGING_FILES_LIST)" \
+			"$(STAGING_DIR)"; \
+	fi
 	if [ -d $(TMP_DIR)/stage-$(PKG_NAME) ]; then \
 		(cd $(TMP_DIR)/stage-$(PKG_NAME); find ./ > $(TMP_DIR)/stage-$(PKG_NAME).files); \
 		$(call locked, \

scripts/clean-package.sh

@@ -0,0 +1,24 @@
+#!/usr/bin/env bash
+[ -n "$1" -a -n "$2" ] || {
+	echo "Usage: $0 <file> <directory>"
+	exit 1
+}
+[ -f "$1" -a -d "$2" ] || {
+	echo "File/directory not found"
+	exit 1
+}
+cat "$1" | (
+	cd "$2"
+	while read entry; do
+		[ -n "$entry" ] || break
+		[ -f "$entry" ] && rm -f $entry
+	done
+)
+cat "$1" | (
+	cd "$2"
+	while read entry; do
+		[ -n "$entry" ] || break
+		[ -d "$entry" ] && rmdir "$entry" > /dev/null 2>&1
+	done
+)
+true