#!/bin/sh

# Script to build a defined set of definitions

set -ex

system_name="$1"
system_arch="$2"

definitions_dir="$(pwd)/definitions"
ybd_dir="$(pwd)/ybd"

# Experimentally we have seen no benefit to a single build with greater
# than max-jobs: 10, though 8 divides up more nicely, so we previously
# had 5 builders with 8 cores each for the parallel build on the meaty
# x86 VPS, but we'd like to see some parallelism on the ARM builders,
# which have 8 CPUs total, so we'd need to have 4 to see any parallelism.
cpus_per_instance=4

# Determine the number of instances to have such that each has at least
# the specified number of CPUs but not more than double it.
# STYLE NOTE: Substitutions are intentionally not quoted here, since in
# some shells arithmetic expansion doesn't follow the traditional POSIX
# word splitting, so quotes aren't removed.
instances="$(( $(nproc) / $cpus_per_instance == 0 ? 1 : $(nproc) / $cpus_per_instance ))"
sudo sed -i "/^instances: /c\\instances: $instances" "$ybd_dir"/ybd.conf

# will this build things - No. 
# "$ybd_dir"/ybd.py "$definitions_dir"/systems/"$system_name" 

# try changing to the definitions dir then building
# ybd seems to set the "target" to be current dir, regardless

cd "$definitions_dir"

sudo "$ybd_dir"/ybd.py systems/"$system_name" "$system_arch"