3 RULLES:

1) Every order folder MUST have its build_all.sh file inside. 
Its the same for all...no edit needed, just to be there.
2) Every SlackBuild MUST have its own 00-build_package-name.sh in the /order folder also.
If 00-build_package-name.sh have the .sh extension then Slackbuild will be builded, if not (00-build_package-name) then SlackBuild will not be beuilded.

3) Every SlackBuild (meson,auto-tooles,python,etc) MUST have this:
TMP=${TMP:-/tmp/gfs}
OUTPUT=${OUTPUT:-$CWD}