build: log package dump failures to logs to avoid forcing user to write cryptic commands to figure out what's going on

SVN-Revision: 26499

include/scan.mk

@@ -27,7 +27,12 @@ define PackageDir
 	{ \
 		$$(call progress,Collecting $(SCAN_NAME) info: $(SCAN_DIR)/$(2)) \
 		echo Source-Makefile: $(SCAN_DIR)/$(2)/Makefile; \
-		$(NO_TRACE_MAKE) --no-print-dir -r DUMP=1 -C $(SCAN_DIR)/$(2) $(SCAN_MAKEOPTS) 2>/dev/null || { $$(call progress,ERROR: please fix $(SCAN_DIR)/$(2)/Makefile\n) rm -f $$@; }; \
+		$(NO_TRACE_MAKE) --no-print-dir -r DUMP=1 -C $(SCAN_DIR)/$(2) $(SCAN_MAKEOPTS) 2>/dev/null || { \
+			mkdir -p "$(TOPDIR)/logs/$(SCAN_DIR)/$(2)"; \
+			$(NO_TRACE_MAKE) --no-print-dir -r DUMP=1 -C $(SCAN_DIR)/$(2) $(SCAN_MAKEOPTS) > $(TOPDIR)/logs/$(SCAN_DIR)/$(2)/dump.txt 2>&1; \
+			$$(call progress,ERROR: please fix $(SCAN_DIR)/$(2)/Makefile - see logs/$(SCAN_DIR)/$(2)/dump.txt for details\n) \
+			rm -f $$@; \
+		}; \
 		echo; \
 	} > $$@ || true
 endef