build: allow packages to declare ABI versions to detect necessary package rebuilds

[openwrt.git] / include / package.mk

diff --git a/include/package.mk b/include/package.mk
index 79066fe..d14c525 100644 (file)
--- 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)