[U-Boot] [PATCH v2 03/15] kbuild: move asm-offsets.h rules to ./Kbuild

[Wolfgang Denk]

Dear Masahiro,

In message <1393207943-3725-4-git-send-email-yamada.m at jp.panasonic.com> you wrote:
>
> +define cmd_generic-offsets
> +	(set -e; \
> +	 echo "#ifndef __GENERIC_ASM_OFFSETS_H__"; \
> +	 echo "#define __GENERIC_ASM_OFFSETS_H__"; \
> +	 echo "/*"; \
> +	 echo " * DO NOT MODIFY."; \
> +	 echo " *"; \
> +	 echo " * This file was generated by Kbuild"; \
> +	 echo " *"; \
> +	 echo " */"; \
> +	 echo ""; \
> +	 sed -ne $(sed-y) $<; \
> +	 echo ""; \
> +	 echo "#endif" ) > $@
> +endef

Can we use here documents in cases like this, so the number of
shell command executions could be greatly reduced?

Does something like this work?

define cmd_generic-offsets		\
	cat <<_END_ > $@		\
#ifndef __GENERIC_ASM_OFFSETS_H__	\
#define __GENERIC_ASM_OFFSETS_H__	\
/*					\
 * DO NOT MODIFY			\
 *					\
 * This file was generated by Kbuild	\
 */					\
$$(sed -ne $(sed-y) $<)			\
#endif					\
_END_

?

[I'm not sure how to mark the continuation lines here...]

Best regards,

Wolfgang Denk

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