[Buildroot] [PATCH 04/21 v2] core: commonalise the bundled and br2-external %_defconfig rules

[Arnout Vandecappelle <arnout@mind.be>]

On 22-10-15 22:33, Yann E. MORIN wrote:
> The code for both cases is exactly the same, and only differs in the
> location where defconfig files are looked for.
> 
> We use an intermediate macro to generate the corresponding rules,
> because directly generating the rules is ugly and needs lots of escaping
> and double-dollar-ing for the $(eval ...) and $(foreach ...) calls to
> play nicely together.
> 
> Furthermore, that will be tremendously useful when we support multiple
> br2-external trees.
> 
> Signed-off-by: "Yann E. MORIN" <yann.morin.1998@free.fr>
> Cc: Thomas Petazzoni <thomas.petazzoni@free-electrons.com>
> Cc: Peter Korsgaard <jacmet@uclibc.org>
> Cc: Thomas De Schampheleire <patrickdepinguin@gmail.com>
> Cc: Arnout Vandecappelle <arnout@mind.be>

 Bunch of small nits. I'm not giving it my reviewed-by yet because I'm not
convinced that this change really makes things clearer, so it only really
applies in function of the multi-external and for that I first have to see the
whole series.

> ---
>  Makefile | 13 ++++++-------
>  1 file changed, 6 insertions(+), 7 deletions(-)
> 
> diff --git a/Makefile b/Makefile
> index 60cea32..052f58a 100644
> --- a/Makefile
> +++ b/Makefile
> @@ -789,13 +789,12 @@ defconfig: $(BUILD_DIR)/buildroot-config/conf outputmakefile
>  	@$(COMMON_CONFIG_ENV) $< --defconfig$(if $(DEFCONFIG),=$(DEFCONFIG)) $(CONFIG_CONFIG_IN)
>  
>  # Override the BR2_DEFCONFIG from COMMON_CONFIG_ENV with the new defconfig

 This comment should go inside the define

> -%_defconfig: $(BUILD_DIR)/buildroot-config/conf $(TOPDIR)/configs/%_defconfig outputmakefile
> -	@$(COMMON_CONFIG_ENV) BR2_DEFCONFIG=$(TOPDIR)/configs/$@ \
> -		$< --defconfig=$(TOPDIR)/configs/$@ $(CONFIG_CONFIG_IN)
> -
> -%_defconfig: $(BUILD_DIR)/buildroot-config/conf $(BR2_EXTERNAL)/configs/%_defconfig outputmakefile
> -	@$(COMMON_CONFIG_ENV) BR2_DEFCONFIG=$(BR2_EXTERNAL)/configs/$@ \
> -		$< --defconfig=$(BR2_EXTERNAL)/configs/$@ $(CONFIG_CONFIG_IN)
> +define PERCENT_DEFCONFIG

 The macros we've added recently were all lowercase, and I like it that way.

 Regards,
 Arnout

> +%_defconfig: $(BUILD_DIR)/buildroot-config/conf $(1)/configs/%_defconfig outputmakefile
> +	@$$(COMMON_CONFIG_ENV) BR2_DEFCONFIG=$(1)/configs/$$@ \
> +		$$< --defconfig=$(1)/configs/$$@ $$(CONFIG_CONFIG_IN)
> +endef
> +$(eval $(foreach d,$(TOPDIR) $(BR2_EXTERNAL),$(call PERCENT_DEFCONFIG,$(d))$(sep)))
>  
>  savedefconfig: $(BUILD_DIR)/buildroot-config/conf outputmakefile
>  	@$(COMMON_CONFIG_ENV) $< \
> 


-- 
Arnout Vandecappelle                          arnout at mind be
Senior Embedded Software Architect            +32-16-286500
Essensium/Mind                                http://www.mind.be
G.Geenslaan 9, 3001 Leuven, Belgium           BE 872 984 063 RPR Leuven
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