Makefile: Do not create empty autoconf.mk on error

The build rules of
  - include/autoconf.mk.dep
  - include/autoconf.mk
  - include/spl-autoconf.mk
  - include/tpl-autoconf.mk
were not nice.

They created empty files (which are never updated)
if an error occurs during preprocessing.

Signed-off-by: Masahiro Yamada <yamada.m@jp.panasonic.com>

diff --git a/Makefile b/Makefile
index c83cf3e8c9ee2e5fffb656bd94e3774ee34b2844..6401fc933c080fb420a601a88ca3803f016b1de0 100644 (file)
--- a/Makefile
+++ b/Makefile
@@ -638,36 +638,33 @@ checkdtc:
 # to regenerate the autoconf.mk file.
 $(obj)include/autoconf.mk.dep: $(obj)include/config.h include/common.h
        @$(XECHO) Generating $@ ; \
-       set -e ; \
        : Generate the dependancies ; \
        $(CC) -x c -DDO_DEPS_ONLY -M $(CFLAGS) $(CPPFLAGS) \
-               -MQ $(obj)include/autoconf.mk include/common.h > $@
+               -MQ $(obj)include/autoconf.mk include/common.h > $@ || \
+               rm $@
 
 $(obj)include/autoconf.mk: $(obj)include/config.h
        @$(XECHO) Generating $@ ; \
-       set -e ; \
        : Extract the config macros ; \
-       $(CPP) $(CFLAGS) -DDO_DEPS_ONLY -dM include/common.h | \
-               sed -n -f tools/scripts/define2mk.sed > $@.tmp && \
-       mv $@.tmp $@
+       $(CPP) $(CFLAGS) -DDO_DEPS_ONLY -dM include/common.h > $@.tmp && \
+               sed -n -f tools/scripts/define2mk.sed $@.tmp > $@; \
+       rm $@.tmp
 
 # Auto-generate the spl-autoconf.mk file (which is included by all makefiles for SPL)
 $(obj)include/tpl-autoconf.mk: $(obj)include/config.h
        @$(XECHO) Generating $@ ; \
-       set -e ; \
        : Extract the config macros ; \
        $(CPP) $(CFLAGS) -DCONFIG_TPL_BUILD  -DCONFIG_SPL_BUILD\
-                       -DDO_DEPS_ONLY -dM include/common.h | \
-       sed -n -f tools/scripts/define2mk.sed > $@.tmp && \
-       mv $@.tmp $@
+                       -DDO_DEPS_ONLY -dM include/common.h > $@.tmp && \
+               sed -n -f tools/scripts/define2mk.sed $@.tmp > $@; \
+       rm $@.tmp
 
 $(obj)include/spl-autoconf.mk: $(obj)include/config.h
        @$(XECHO) Generating $@ ; \
-       set -e ; \
        : Extract the config macros ; \
-       $(CPP) $(CFLAGS) -DCONFIG_SPL_BUILD -DDO_DEPS_ONLY -dM include/common.h | \
-       sed -n -f tools/scripts/define2mk.sed > $@.tmp && \
-       mv $@.tmp $@
+       $(CPP) $(CFLAGS) -DCONFIG_SPL_BUILD -DDO_DEPS_ONLY -dM include/common.h > $@.tmp && \
+               sed -n -f tools/scripts/define2mk.sed $@.tmp > $@; \
+       rm $@.tmp
 
 $(obj)include/generated/generic-asm-offsets.h: $(obj)include/autoconf.mk.dep \
        $(obj)include/spl-autoconf.mk \