+PARENL :=(
+PARENR :=)
+
+dep_split=$(subst :,$(space),$(1))
+dep_rem=$(subst !,,$(subst $(strip $(PARENL)),,$(subst $(strip $(PARENR)),,$(word 1,$(call dep_split,$(1))))))
+dep_confvar=$(strip $(foreach cond,$(subst ||, ,$(call dep_rem,$(1))),$(CONFIG_$(cond))))
+dep_pos=$(if $(call dep_confvar,$(1)),$(call dep_val,$(1)))
+dep_neg=$(if $(call dep_confvar,$(1)),,$(call dep_val,$(1)))
+dep_if=$(if $(findstring !,$(1)),$(call dep_neg,$(1)),$(call dep_pos,$(1)))
+dep_val=$(word 2,$(call dep_split,$(1)))
+strip_deps=$(strip $(subst +,,$(filter-out @%,$(1))))
+filter_deps=$(foreach dep,$(call strip_deps,$(1)),$(if $(findstring :,$(dep)),$(call dep_if,$(dep)),$(dep)))
+
+define AddDependency
+ $$(if $(1),$$(if $(2),$$(foreach pkg,$(1),$$(IPKG_$$(pkg))): $$(foreach pkg,$(2),$$(IPKG_$$(pkg)))))
+endef
+
+define FixupReverseDependencies
+ DEPS := $$(filter %:$(1),$$(IDEPEND))
+ DEPS := $$(patsubst %:$(1),%,$$(DEPS))
+ DEPS := $$(filter $$(DEPS),$$(IPKGS))
+ $(call AddDependency,$$(DEPS),$(1))
+endef
+
+define FixupDependencies
+ DEPS := $$(filter $(1):%,$$(IDEPEND))
+ DEPS := $$(patsubst $(1):%,%,$$(DEPS))
+ DEPS := $$(filter $$(DEPS),$$(IPKGS))
+ $(call AddDependency,$(1),$$(DEPS))
+endef
+
+ifneq ($(PKG_NAME),toolchain)
+ define CheckDependencies
+ @( \
+ rm -f $(PKG_INFO_DIR)/$(1).missing; \
+ ( \
+ export READELF=$(TARGET_CROSS)readelf XARGS="$(XARGS)"; \
+ $(SCRIPT_DIR)/gen-dependencies.sh "$$(IDIR_$(1))"; \
+ ) | while read FILE; do \
+ grep -q "$$$$FILE" $(PKG_INFO_DIR)/$(1).provides || \
+ echo "$$$$FILE" >> $(PKG_INFO_DIR)/$(1).missing; \
+ done; \
+ if [ -f "$(PKG_INFO_DIR)/$(1).missing" ]; then \
+ echo "Package $(1) is missing dependencies for the following libraries:"; \
+ cat "$(PKG_INFO_DIR)/$(1).missing"; \
+ false; \
+ fi; \
+ )
+ endef
+endif
+