build: add locking for downloads (fixes race conditions with multiple variants)

Signed-off-by: Felix Fietkau <nbd@openwrt.org>
git-svn-id: svn://svn.openwrt.org/openwrt/trunk@48416 3c298f89-4303-0410-b956-a3cf2f4a3e73

diff --git a/include/download.mk b/include/download.mk
index ca5eee4..ffde522 100644 (file)
--- a/include/download.mk
+++ b/include/download.mk
@@ -182,6 +182,6 @@ define Download
 
   $(DL_DIR)/$(FILE):
        mkdir -p $(DL_DIR)
-       $(if $(DownloadMethod/$(call dl_method,$(URL),$(PROTO))),$(DownloadMethod/$(call dl_method,$(URL),$(PROTO))),$(DownloadMethod/unknown))
+       $(call locked,$(if $(DownloadMethod/$(call dl_method,$(URL),$(PROTO))),$(DownloadMethod/$(call dl_method,$(URL),$(PROTO))),$(DownloadMethod/unknown)),$(FILE))
 
 endef