[Buildroot] [RFC 1/1] docs/adding-packages-generic.txt: Add note if package does not use source

[Arnout Vandecappelle]

On 17/04/2019 09:17, Vadim Kochan wrote:
> Add some description how to allow to add package which does not need
> any source code.
> 
> Signed-off-by: Vadim Kochan <vadim4j at gmail.com>
> ---
>  docs/manual/adding-packages-generic.txt | 9 +++++++--
>  1 file changed, 7 insertions(+), 2 deletions(-)
> 
> diff --git a/docs/manual/adding-packages-generic.txt b/docs/manual/adding-packages-generic.txt
> index 7be1754f54..96a57a519a 100644
> --- a/docs/manual/adding-packages-generic.txt
> +++ b/docs/manual/adding-packages-generic.txt
> @@ -223,8 +223,13 @@ not and can not work as people would expect it should:
>    which Buildroot will use to download the tarball from
>    +LIBFOO_SITE+. If +HOST_LIBFOO_SOURCE+ is not specified, it defaults
>    to +LIBFOO_SOURCE+. If none are specified, then the value is assumed
> -  to be +libfoo-$(LIBFOO_VERSION).tar.gz+. +
> -  Example: +LIBFOO_SOURCE = foobar-$(LIBFOO_VERSION).tar.bz2+
> +  to be +libfoo-$(LIBFOO_VERSION).tar.gz+.
> +  In case when the package does not use any source code (e.g. only performs
> +  some target/host altering), then +LIBFOO_SOURCE+ should be specified
> +  with empty value. +
> +  Examples:
> +    +LIBFOO_SOURCE = foobar-$(LIBFOO_VERSION).tar.bz2+
> +    +LIBFOO_SOURCE =

 I'm probably stupid, but when is this needed? E.g. skeleton-init-sysv doesn't
have any code, and it doesn't set _SOURCE to empty...

 Regards,
 Arnout

>  
>  * +LIBFOO_PATCH+ may contain a space-separated list of patch file
>    names, that Buildroot will download and apply to the package source
>