[Buildroot] [PATCH 1/3] Makefile: use absolute paths to BR2_EXTERNAL

[Arnout Vandecappelle <arnout@mind.be>]

On 22/01/14 21:59, Yann E. MORIN wrote:
> +  _BR2_EXTERNAL = $(shell cd $(BR2_EXTERNAL) >/dev/null 2>&1 && pwd)
> +  ifeq ($(_BR2_EXTERNAL),)
> +    ifeq ($(patsubst /%,/,$(BR2_EXTERNAL)),/)
> +      $(error BR2_EXTERNAL='$(BR2_EXTERNAL)' does not exist)
> +    else
> +      $(error BR2_EXTERNAL='$(BR2_EXTERNAL)' does not exist, relatively to $(TOPDIR))

  I don't think the limited explanation "relatively to $(TOPDIR)" 
warrants the additional complexity of patsubsting stuff.

> +    endif
> +  endif
> +  BR2_EXTERNAL := $(_BR2_EXTERNAL)

  AFAICS there is no need to have a separate _BR2_EXTERNAL, since we'll 
anyway error out if it is empty.

  So, I'd propose:

override BR2_EXTERNAL := $(shell cd $(BR2_EXTERNAL) >/dev/null 2>&1 && pwd)
ifeq ($(BR2_EXTERNAL),)
	$(error BR2_EXTERNAL directory '$(BR2_EXTERNAL)' does not exist)
endif


  Regards,
  Arnout

-- 
Arnout Vandecappelle                          arnout at mind be
Senior Embedded Software Architect            +32-16-286500
Essensium/Mind                                http://www.mind.be
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