[Buildroot] [RESEND PATCH v3 1/1] package/iputils: add configs to select which binaries are built

[Thomas Petazzoni]

On Sun, 15 Sep 2019 12:05:46 +0200
Alejandro González <alejandro.gonzalez.correo at gmail.com> wrote:

> By default, the iputils build script might build binaries which are
> useless for certain applications, like tftpd or ninfod. Those binaries
> will add to the target filesystem size unless a post-build script removes
> them manually, which is cumbersome and doesn't shorten build times.
> 
> In particular, in a certain aarch64 Buildroot project with musl selected
> as a C library, this patch allowed to shrink the full iputils package from
> 219 KiB (if every option is selected) to 63 KiB (with only the ping
> binary selected) - a 71.2% relative size decrease.
> 
> Moreover, upstream recently introduced a commit that disabled tftpd from
> building by default, like rarpd. In the current state of things, this change
> will introduce inconveniences for Buildroot users which prefer to use the
> tftpd implementation provided by this package. With this patch, however, that
> decision and similar future ones won't be a concern, because they will
> have complete control of what binaries are built.
> 
> These changes add Kconfig options which let the user select what
> binaries are built with ease.
> 
> Signed-off-by: Alejandro González <alejandro.gonzalez.correo at gmail.com>
> ---
> Changes v2 -> v3:
> 	- Several style revisions (suggested by Arnout)
> 	- Simplify ninfod crypto dependencies logic (suggested by
> 	  Arnout)
> 	- Better explain the rationale for this patch in the commit
> 	  message

I have finally applied to master. The ninfod situation is now simpler
because iputils no longer needs any external crypto library.

Thanks!

Thomas
-- 
Thomas Petazzoni, CTO, Bootlin
Embedded Linux and Kernel engineering
https://bootlin.com