[Buildroot] [PATCH] pkgconf: make wrapper relocatable

[Peter Korsgaard <peter@korsgaard.com>]

>>>>> "Thomas" == Thomas Petazzoni <thomas.petazzoni@free-electrons.com> writes:

 > Hello,
 > On Wed, 9 Mar 2016 10:51:52 -0300, Gustavo Zacarias wrote:

 >> Indeed it does, but you can't have the cake and eat it at once can you?
 >> Arnout in the famous vala-wrapper thread pointed that we shouldn't 
 >> hardcode the staging directory in it and i've adjusted accordingly, so 
 >> which way is it? (same logic would apply to both cases). Re:
 >> http://lists.busybox.net/pipermail/buildroot/2016-February/153671.html

 > What about doing this relatively to the wrapper location?

 > WRAPPER_DIR=$(dirname $0)

That relies on argv[0] containing the full path, which it normally will
do when you run it from the shell, but isn't guaranteed to work. If we
want to support that then we should use /proc/self/exe

> STAGING_DIR=$(readlink -f ${WRAPPER_DIR}/../../../staging/)

This will only work if you keep the entire buildroot output around (or
rather output/staging) and don't customize the BR2_HOST_DIR.

-- 
Venlig hilsen,
Peter Korsgaard