error check autoconf.mk generation

If any of the steps for generating autoconf.mk fail currently, they go
unnoticed.  To fix, we can simply add 'set -e' to the long list of commands.
This is simpler and more robust than placing '|| exit $$?' after every line.

Signed-off-by: Mike Frysinger <vapier@gentoo.org>

diff --git a/Makefile b/Makefile
index 82d3ab4..7d35d14 100644 (file)
--- a/Makefile
+++ b/Makefile
@@ -414,6 +414,7 @@ $(obj)System.map:   $(obj)u-boot
 # to regenerate the autoconf.mk file.
 $(obj)include/autoconf.mk: $(obj)include/config.h $(VERSION_FILE)
        @$(XECHO) Generating include/autoconf.mk ; \
+       set -e ; \
        : Generate the dependancies ; \
        $(CC) -M $(HOST_CFLAGS) $(CPPFLAGS) -MQ $@ include/common.h > $@.dep ; \
        : Extract the config macros ; \