From 623825103e17a975f36854b362f17f8d26557828 Mon Sep 17 00:00:00 2001
From: Felix Fietkau <nbd@openwrt.org>
Date: Sun, 23 Feb 2014 17:32:04 +0000
Subject: build: allow packages to declare ABI versions to detect necessary
 package rebuilds

If a package directly depends on another package that recently changed
its ABI version, it will be cleaned up and rebuilt (assuming quilt is
not used).

This helps with packages that have no stable ABI, e.g. libubox, ubus,
etc.

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

SVN-Revision: 39720
---
 include/package.mk | 12 ++++++++++++
 1 file changed, 12 insertions(+)

(limited to 'include/package.mk')

diff --git a/include/package.mk b/include/package.mk
index 79066fe1e2..d14c525506 100644
--- a/include/package.mk
+++ b/include/package.mk
@@ -39,6 +39,15 @@ include $(INCLUDE_DIR)/host.mk
 include $(INCLUDE_DIR)/unpack.mk
 include $(INCLUDE_DIR)/depends.mk
 
+find_library_dependencies = $(wildcard $(patsubst %,$(STAGING_DIR)/pkginfo/%.version, \
+	$(filter-out $(BUILD_PACKAGES),$(foreach dep, \
+		$(filter-out @%, $(patsubst +%,%,$(1))), \
+		$(if $(findstring :,$(dep)), \
+			$(word 2,$(subst :,$(space),$(dep))), \
+			$(dep) \
+		) \
+	))))
+
 STAMP_NO_AUTOREBUILD=$(wildcard $(PKG_BUILD_DIR)/.no_autorebuild)
 PREV_STAMP_PREPARED:=$(if $(STAMP_NO_AUTOREBUILD),$(wildcard $(PKG_BUILD_DIR)/.prepared*))
 ifneq ($(PREV_STAMP_PREPARED),)
@@ -227,6 +236,9 @@ define Package/$(1)/description
 endef
 endif
 
+  BUILD_PACKAGES += $(1)
+  $(STAMP_PREPARED): $$(if $(QUILT)$(DUMP),,$(call find_library_dependencies,$(DEPENDS)))
+
   $(foreach FIELD, TITLE CATEGORY SECTION VERSION,
     ifeq ($($(FIELD)),)
       $$(error Package/$(1) is missing the $(FIELD) field)
-- 
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