allow package directories to override the path to configure

SVN-Revision: 5722

include/package.mk

@@ -14,6 +14,7 @@ include $(INCLUDE_DIR)/prereq.mk
 include $(INCLUDE_DIR)/host.mk
 include $(INCLUDE_DIR)/unpack.mk
 
+PKG_CONFIG_PATH:=.
 export CONFIG_SITE:=$(INCLUDE_DIR)/site/$(REAL_GNU_TARGET_NAME)
 
 define Build/DefaultTargets
@@ -297,7 +298,7 @@ define Build/Configure/Default
 		LDFLAGS="-L$(STAGING_DIR)/usr/lib -L$(STAGING_DIR)/lib" \
 		PKG_CONFIG_PATH="$(STAGING_DIR)/usr/lib/pkgconfig" \
 		$(2) \
-		./configure \
+		$(PKG_CONFIG_PATH)/configure \
 		--target=$(GNU_TARGET_NAME) \
 		--host=$(GNU_TARGET_NAME) \
 		--build=$(GNU_HOST_NAME) \