From: Matthias Schiffer <mschiffer@universe-factory.net>
Date: Wed, 18 Mar 2015 20:07:22 +0100
Subject: build: define STAMP_CONFIGURED recursively

Defining STAMP_CONFIGURED statically caused it not to reflect changes to
PKG_CONFIG_DEPENDS made after including package.mk, like the additional options
added by feeds.mk for all packages.

Furthermore, as STAMP_CONFIGURED_WILDCARD was already defined recursively, the
patsubst in its definition would never match, and in consequence, the stamps
were never removed. This caused packages not to be rebuilt when they should have
been.

diff --git a/include/package.mk b/include/package.mk
index 53ca6de..402fb1a 100644
--- a/include/package.mk
+++ b/include/package.mk
@@ -60,7 +60,7 @@ ifneq ($(PREV_STAMP_PREPARED),)
 else
   STAMP_PREPARED=$(PKG_BUILD_DIR)/.prepared$(if $(QUILT)$(DUMP),,_$(shell $(call find_md5,${CURDIR} $(PKG_FILE_DEPENDS),))$(call confvar,$(PKG_PREPARED_DEPENDS)))
 endif
-STAMP_CONFIGURED:=$(PKG_BUILD_DIR)/.configured$(if $(DUMP),,_$(call confvar,$(PKG_CONFIG_DEPENDS)))
+STAMP_CONFIGURED=$(PKG_BUILD_DIR)/.configured$(if $(DUMP),,_$(call confvar,$(PKG_CONFIG_DEPENDS)))
 STAMP_CONFIGURED_WILDCARD=$(patsubst %_$(call confvar,$(PKG_CONFIG_DEPENDS)),%_*,$(STAMP_CONFIGURED))
 STAMP_BUILT:=$(PKG_BUILD_DIR)/.built
 STAMP_INSTALLED:=$(STAGING_DIR)/stamp/.$(PKG_NAME)_installed