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#!/bin/bash
#
# Copyright (c) 2026, Apollo Telephone Laboratories.
# Provided under the BSD-3 clause.
#

MAKE=make

#
# Check if all the dependencies are installed on the host
# machine.
#
# $@: Dependencies installed on the machine
#
check_deps() {
    for dep in $@
    do
        printf "Checking if $dep is installed... "
        which $dep &>/dev/null
        if [ $? -ne 0 ]
        then
            echo "no"
            echo "fatal: Please install '$dep'!"
            exit 1
        fi
        echo "yes"
    done
}

#
# Prepare the build environment
#
build_prepare() {
    source dev/build.env

    check_deps          \
        make            \
        clang           \
        rsync           \
        llvm-objcopy    \
        ld.lld
}

#
# Build a directory
#
# $1:  Directory to build
# $2:  Subsystem name
#
build_dir() {
    pushd $1
        echo "[*] Building $2..."
        $MAKE
    popd
}

build_run() {
    mkdir -p out

    build_dir       \
        atos        \
        "kernel"
}

build_prepare
build_run