@@ -637,36 +637,33 @@ 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 \
The build rules of - include/autoconf.mk.dep - include/autoconf.mk - include/spl-autoconf.mk - include/tpl-autoconf.mk were wrong. They created empty files (which are never updated) if an error occurrs during preprocessing. Signed-off-by: Masahiro Yamada <yamada.m@jp.panasonic.com> --- Before this commit, Makefile created empty files such as - include/autoconf.mk - include/spl-autoconf.mk - include/tpl-autoconf.mk - include/autoconf.mk.dep on error. For example, try "make" with a wrong CROSS_COMPILE like this: $ make mrproper $ make omap4_panda_config Configuring for omap4_panda board... $ make CROSS_COMPILE=foobar- all ---<snip>--- /bin/bash: foobar-gcc: command not found make[1]: *** [lib/asm-offsets.s] Error 127 Of cource, make failed. And just check include/autoconf.mk, include/spl-autoconf.mk, etc. They exist and are all empty. And then, try "make" with a correct CROSS_COMPILE: $ make CROSS_COMPILE=arm-linux-gnueabi- all make will proceed with empty include/autoconf.mk and fail. A build rule of include/autoconf.mk is absolutely wrong: $(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 $@ This code does not work as we expect on error because it does not detect the error of $(CPP). An error usually occurrs during $(CPP), whereas sed always succeeds. ( "set -e" is also meaningless, here. ) A empty include/autoconf.mk is created on error. (And it is never updated because it is newer than include/config.h) FYI: A pipe return the exit status of the last command. For example, $ command1 | command2 returns exit status of "command2", not "command1". Makefile | 25 +++++++++++-------------- 1 file changed, 11 insertions(+), 14 deletions(-)