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Makefile: fix dependency problem with parallel builds

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Parallel builds (using "make -jN") would occasionally fail with error
messages like
	include/autoconf.mk:212: *** missing separator.  Stop.
Line numbers and affected boards were changing. Obviously some
Makefiles included autoconf.mk while it was still being written to.
As a fix, we now write to a temporary file first and then rename it,
so that it is really ready to use as soon as it appears.

Signed-off-by: Wolfgang Denk <wd@denx.de>
This commit is contained in:
Wolfgang Denk 2008-12-16 14:41:02 +01:00
parent 455ae7e87f
commit 4a0f7538c5
1 changed files with 2 additions and 1 deletions
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3
Makefile
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@ -463,7 +463,8 @@ $(obj)include/autoconf.mk: $(obj)include/config.h
set -e ; \
: Extract the config macros ; \
$(CPP) $(CFLAGS) -DDO_DEPS_ONLY -dM include/common.h | \
sed -n -f tools/scripts/define2mk.sed > $@
sed -n -f tools/scripts/define2mk.sed > $@.tmp && \
mv $@.tmp $@
sinclude $(obj)include/autoconf.mk.dep