[U-Boot] [PATCH 2/2] Makefile: Add a 'checkthumb' rule

[Mike Frysinger]

On Friday 16 March 2012 11:27:48 Tom Rini wrote:
> --- a/Makefile
> +++ b/Makefile
> 
>  # Explicitly make _depend in subdirs containing multiple targets to
> prevent # parallel sub-makes creating .depend files simultaneously.
> -depend dep:	$(TIMESTAMP_FILE) $(VERSION_FILE) \
> +depend dep:	checkthumb $(TIMESTAMP_FILE) $(VERSION_FILE) \
>  		$(obj)include/autoconf.mk \
>  		$(obj)include/generated/generic-asm-offsets.h \
>  		$(obj)include/generated/asm-offsets.h
> @@ -548,6 +548,15 @@ SYSTEM_MAP = \
>  $(obj)System.map:	$(obj)u-boot
>  		@$(call SYSTEM_MAP,$<) > $(obj)System.map
> 
> +checkthumb:
> +	@if test "$(ARCH)" = "arm" -a "$(CONFIG_SYS_THUMB_BUILD)" = "y"; then \
> +		if test $(call cc-version) -lt 0404; then \
> +			echo -n '*** Your GCC does not produce working '; \
> +			echo 'binaries in THUMB mode.'; \
> +			echo '*** Your board is configured for THUMB mode.'; \
> +			false; \
> +		fi ; \
> +	fi

couldn't you do:
arch/arm/config.mk:ALL-$(CONFIG_SYS_THUMB_BUILD) += checkthumb
-mike
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