[Buildroot] [PATCH v3 1/5] Makefile: don't depend on the umask

[Yann E. MORIN]

Guido, All,

On 2014-11-17 14:19 -0300, Guido Martínez spake thusly:
> Some packages and BR itself create files and directories on the target
> with cp/mkdir/etc which depend on the umask at the time of building.
> 
> To fix this, use a trick inside the Makefile which wraps all rules when
> the umask is not 0022. This sets the umask at the top level, and then
> the building process continues as usual.
> 
> Signed-off-by: Guido Martínez <guido at vanguardiasur.com.ar>
> ---
>  Makefile | 15 +++++++++++++++
>  1 file changed, 15 insertions(+)
> 
> diff --git a/Makefile b/Makefile
> index 471edf9..5ad8235 100644
> --- a/Makefile
> +++ b/Makefile
> @@ -24,6 +24,19 @@
>  # You shouldn't need to mess with anything beyond this point...
>  #--------------------------------------------------------------
>  
> +# Trick for always running with a fixed umask
> +UMASK=0022
> +ifneq ($(shell umask),$(UMASK))
> +.PHONY:*
> +
> +all:
> +	@umask $(UMASK) && make --no-print-directory

You should use $(MAKE) instead of just 'make'.

I'm not too fond of --no-print-directory, because it is gonna be
inherited by all sub-makes, and especially the sub-makes that actually
build the packages. I don't care we have an extra "Entering directory"
message.

Also, did you check how that plays with top-level parallel builds? I'm
not too fond of it, but some users want to use it. See the comment a bit
further in the Makefile.

> +
> +%:
> +	@umask $(UMASK) && make --no-print-directory $@

Ditto.

Regards,
Yann E. MORIN.

> +else # umask
> +
>  # This is our default rule, so must come first
>  all:
>  
> @@ -932,3 +945,5 @@ include docs/manual/manual.mk
>  -include $(BR2_EXTERNAL)/docs/*/*.mk
>  
>  .PHONY: $(noconfig_targets)
> +
> +endif #umask
> -- 
> 2.1.3
> 

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