[Buildroot] [PATCH 02/13 v2] core/pkg-utils: add macro to hardlink-or-copy

[Arnout Vandecappelle <arnout@mind.be>]

On 13-12-15 19:35, Yann E. MORIN wrote:
> Signed-off-by: "Yann E. MORIN" <yann.morin.1998@free.fr>
> Cc: Luca Ceresoli <luca@lucaceresoli.net>
> Reviewed-by: Luca Ceresoli <luca@lucaceresoli.net>
> Tested-by: Luca Ceresoli <luca@lucaceresoli.net>

Reviewed-by: Arnout Vandecappelle (Essensium/Mind) <arnout@mind.be>

 Regards,
 Arnout

> 
> ---
> Changes RFC -> v1:
>   - move to pkg-utils  (Luca)
> ---
>  package/pkg-utils.mk | 18 ++++++++++++++++++
>  1 file changed, 18 insertions(+)
> 
> diff --git a/package/pkg-utils.mk b/package/pkg-utils.mk
> index 44bd2c9..41799b0 100644
> --- a/package/pkg-utils.mk
> +++ b/package/pkg-utils.mk
> @@ -113,6 +113,24 @@ $$(error Package error: use $(2) instead of $(1). Please fix your .mk file)
>  endif
>  endef
>  
> +################################################################################
> +# hardlink-copy -- hardlink source and destination if possible, otherwise
> +# do a simple copy
> +#
> +# argument 1 is the source *file*
> +# argument 2 is the destination *directory*
> +#
> +# example:
> +#   $(call hardlink-copy,/path/to/source/file,/path/to/destination/dir/)
> +#
> +# Note: we make that a single command, so se can:
> +#  - use '$(Q)' in front of it and properly silence the whole macro,
> +#  - use '|| exit 1' after it, so we can exit on error in compound commands.
> +################################################################################
> +define hardlink-copy
> +	{ mkdir -p $(2) && { cp -l $(1) $(2) 2>/dev/null || cp $(1) $(2); } }
> +endef
> +
>  #
>  # legal-info helper functions
>  #
> 


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