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To: Thomas Monjalon <thomas.monjalon@6wind.com>, dev@dpdk.org
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From: Olivier Matz <olivier.matz@6wind.com>
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Date: Fri, 24 Jun 2016 16:06:18 +0200
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Subject: Re: [dpdk-dev] [PATCH v2] mk: fix parallel build of test resources
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Hi Thomas,

On 06/24/2016 01:22 PM, Thomas Monjalon wrote:
> --- a/app/test/Makefile
> +++ b/app/test/Makefile
> @@ -43,14 +43,14 @@ define linked_resource
>  SRCS-y += $(1).res.o
>  $(1).res.o: $(2)
>  	@  echo '  MKRES $$@'
> -	$Q ln -fs $$< resource.tmp
> +	$Q [ "$$(<D)" = . ] || ln -fs $$<

Maybe the symbolic link file in the build directory could be prefixed
with "lnk_"... (see following below)

>  	$Q $(OBJCOPY) -I binary -B $(RTE_OBJCOPY_ARCH) -O $(RTE_OBJCOPY_TARGET) \
>  		--rename-section                                         \
>  			.data=.rodata,alloc,load,data,contents,readonly  \
> -		--redefine-sym _binary_resource_tmp_start=beg_$(1)       \
> -		--redefine-sym _binary_resource_tmp_end=end_$(1)         \
> -		--redefine-sym _binary_resource_tmp_size=siz_$(1)        \
> -		resource.tmp $$@ && rm -f resource.tmp
> +		--redefine-sym _binary_$$(subst .,_,$$(<F))_start=beg_$(1) \
> +		--redefine-sym _binary_$$(subst .,_,$$(<F))_end=end_$(1)   \
> +		--redefine-sym _binary_$$(subst .,_,$$(<F))_size=siz_$(1)  \
> +		$$(<F) $$@
>  endef
>  
>  ifeq ($(CONFIG_RTE_APP_TEST_RESOURCE_TAR),y)
> @@ -76,7 +76,9 @@ SRCS-$(CONFIG_RTE_LIBRTE_CMDLINE) := commands.c
>  SRCS-y += test.c
>  SRCS-y += resource.c
>  SRCS-y += test_resource.c
> -$(eval $(call linked_resource,test_resource_c,resource.c))
> +test_resource.res: test_resource.c
> +	@ cp $< $@
> +$(eval $(call linked_resource,test_resource_c,test_resource.res))
>  $(eval $(call linked_tar_resource,test_resource_tar,test_resource.c))
>  SRCS-$(CONFIG_RTE_APP_TEST_RESOURCE_TAR) += test_pci.c
>  $(eval $(call linked_tar_resource,test_pci_sysfs,test_pci_sysfs))

...this would avoid to rename the resource file and make the patch
easier to understand.

Olivier