buildroot: add BR2_BACKUP_SITE and DOWNLOAD helper

This is the long requested backup mirror support. So far only enabled
for Makefile.autotools.in, but there's no reason why we cannot use
DOWNLOAD everywhere.

Notice, I'm still syncing http://buildroot.uclibc.org/downloads/sources/

1 files changed, 28 insertions, 9 deletions

diff --git a/package/Makefile.autotools.in b/package/Makefile.autotools.in
index 6ed9c31fe..bd8bed4bb 100644
--- a/package/Makefile.autotools.in
+++ b/package/Makefile.autotools.in
@@ -119,6 +119,30 @@ MESSAGE = @echo "$(TERM_BOLD)>>> $($(PKG)_NAME) $($(PKG)_VERSION) $(1)$(TERM_RES
 TERM_BOLD := $(shell tput smso)
 TERM_RESET := $(shell tput rmso)
 
+################################################################################
+# DOWNLOAD -- Download helper. Will try to download source from:
+# 1) BR2_PRIMARY_SITE if enabled
+# 2) Download site
+# 3) BR2_BACKUP_SITE if enabled
+#
+# Argument 1 is the source location
+# Argument 2 is the source filename
+#
+# E.G. use like this:
+# $(call DOWNLOAD,$(FOO_SITE),$(FOO_SOURCE))
+################################################################################
+
+# support make source-check/external-deps
+ifneq ($(SPIDER),)
+DOWNLOAD:=$(WGET) -P $(DL_DIR) $(1)/$(2)
+else
+define DOWNLOAD
+	$(Q)test -e $(DL_DIR)/$(2) || \
+	for site in $(strip $(subst ",,$(BR2_PRIMARY_SITE))) $(1) $(strip $(subst ",,$(BR2_BACKUP_SITE))); \
+	do $(WGET) -P $(DL_DIR) $$site/$(2) && exit; done
+endef
+endif
+
 # Utility programs used to build packages
 TAR ?= tar
 #ACLOCAL_STAGING_DIR ?= $(STAGING_DIR)/usr/share/aclocal
@@ -136,17 +160,12 @@ TAR_STRIP_COMPONENTS := $(shell $(TAR) --help | grep strip-path > /dev/null ; if
 # Retrieve and unpack the archive
 $(BUILD_DIR)/%/.stamp_downloaded:
 # support make source-check/external-deps
-ifneq ($(SPIDER),)
-	$(WGET) -P $(DL_DIR) $($(PKG)_SITE)/$($(PKG)_SOURCE)
-	$(if $($(PKG)_PATCH),$(WGET) -P $(DL_DIR) $($(PKG)_SITE)/$($(PKG)_PATCH))
-else
+ifeq ($(SPIDER),)
 	$(call MESSAGE,"Downloading")
-ifneq ($(strip $(subst ",,$(BR2_PRIMARY_SITE))),)
-#"))
-	-$(Q)test -e $(DL_DIR)/$($(PKG)_SOURCE) || $(WGET) -P $(DL_DIR) $(BR2_PRIMARY_SITE)/$($(PKG)_SOURCE)
 endif
-	$(Q)test -e $(DL_DIR)/$($(PKG)_SOURCE) || $(WGET) -P $(DL_DIR) $($(PKG)_SITE)/$($(PKG)_SOURCE)
-	$(if $($(PKG)_PATCH),$(Q)test -e $(DL_DIR)/$($(PKG)_PATCH) || $(WGET) -P $(DL_DIR) $($(PKG)_SITE)/$($(PKG)_PATCH))
+	$(call DOWNLOAD,$($(PKG)_SITE),$($(PKG)_SOURCE))
+	$(if $($(PKG)_PATCH),$(call DOWNLOAD,$($(PKG)_SITE),$($(PKG)_PATCH)))
+ifeq ($(SPIDER),)
 	$(Q)mkdir -p $(@D)
 	$(Q)touch $@
 endif