Makefile: fix "error: version_autogenerated.h: No such file or directory"

Signed-off-by: Wolfgang Denk <wd@denx.de>

Makefile

@@ -424,13 +424,19 @@ $(obj)System.map:	$(obj)u-boot
 # This target actually generates 2 files; autoconf.mk and autoconf.mk.dep.
 # the dep file is only include in this top level makefile to determine when
 # to regenerate the autoconf.mk file.
-$(obj)include/autoconf.mk: $(obj)include/config.h
-	@$(XECHO) Generating include/autoconf.mk ; \
+$(obj)include/autoconf.mk.dep: $(obj)include/config.h include/common.h
+	@$(XECHO) Generating $@ ; \
 	set -e ; \
 	: Generate the dependancies ; \
-	$(CC) -x c -M $(HOST_CFLAGS) $(CPPFLAGS) -MQ $@ include/common.h > $@.dep ; \
+	$(CC) -x c -DDO_DEPS_ONLY -M $(HOST_CFLAGS) $(CPPFLAGS) \
+		-MQ $(obj)include/autoconf.mk include/common.h > $@
+
+$(obj)include/autoconf.mk: $(obj)include/config.h
+	@$(XECHO) Generating $@ ; \
+	set -e ; \
 	: Extract the config macros ; \
-	$(CPP) $(CFLAGS) -dM include/common.h | sed -n -f tools/scripts/define2mk.sed > $@
+	$(CPP) $(CFLAGS) -DDO_DEPS_ONLY -dM include/common.h | \
+		sed -n -f tools/scripts/define2mk.sed > $@
 
 sinclude $(obj)include/autoconf.mk.dep
 

include/version.h

@@ -24,6 +24,8 @@
 #ifndef	__VERSION_H__
 #define	__VERSION_H__
 
+#ifndef DO_DEPS_ONLY
 #include "version_autogenerated.h"
+#endif
 
 #endif	/* __VERSION_H__ */