#!/usr/bin/env php
Error: Missing environment variables.
You must define the environment variable DESTIBETARC and DESTISTABLE to point to the
directories where you want to save the generated packages.
build. aborted.

You can set them with
On Linux:
export DESTIBETARC='/tmp'; export DESTISTABLE='/tmp';
On Windows:
set DESTIBETARC=c:/tmp
set DESTISTABLE=c:/tmp

Example: DESTIBETARC='/media/HDDATA1_LD/Mes Sites/Web/Dolibarr/dolibarr.org/files/lastbuild'
Example: DESTISTABLE='/media/HDDATA1_LD/Mes Sites/Web/Dolibarr/dolibarr.org/files/stable'