From 0ee738e9c91c49739798ac5ff8dd4a12c06bb82f Mon Sep 17 00:00:00 2001
From: px4dev <px4@purgatory.org>
Date: Sun, 12 May 2013 10:51:25 -0700
Subject: [PATCH] Fix ROMFS dependency scan, add a warning if ROMFS_ROOT
 appears to be empty.

---
 makefiles/firmware.mk | 18 +++++++++++-------
 1 file changed, 11 insertions(+), 7 deletions(-)

diff --git a/makefiles/firmware.mk b/makefiles/firmware.mk
index e6a45a4e8a..6fa0ae3eb0 100644
--- a/makefiles/firmware.mk
+++ b/makefiles/firmware.mk
@@ -269,13 +269,17 @@ endif
 #
 
 # Add dependencies on anything in the ROMFS root
-ROMFS_DEPS		+= $(wildcard \
-			     (ROMFS_ROOT)/* \
-			     (ROMFS_ROOT)/*/* \
-			     (ROMFS_ROOT)/*/*/* \
-			     (ROMFS_ROOT)/*/*/*/* \
-			     (ROMFS_ROOT)/*/*/*/*/* \
-			     (ROMFS_ROOT)/*/*/*/*/*/*)
+ROMFS_FILES		+= $(wildcard \
+			     $(ROMFS_ROOT)/* \
+			     $(ROMFS_ROOT)/*/* \
+			     $(ROMFS_ROOT)/*/*/* \
+			     $(ROMFS_ROOT)/*/*/*/* \
+			     $(ROMFS_ROOT)/*/*/*/*/* \
+			     $(ROMFS_ROOT)/*/*/*/*/*/*)
+ifeq ($(ROMFS_FILES),)
+$(error ROMFS_ROOT $(ROMFS_ROOT) specifies a directory containing no files)
+endif
+ROMFS_DEPS		+= $(ROMFS_FILES)
 ROMFS_IMG		 = $(WORK_DIR)romfs.img
 ROMFS_CSRC		 = $(ROMFS_IMG:.img=.c)
 ROMFS_OBJ		 = $(ROMFS_CSRC:.c=.o)