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#!/bin/bash

MAKE=make

#
# Check if a list of deps are installed on the host machine
#
# $@: Dep list to check
#
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
}

#
# Ensure that the build environment is sane
#
build_check() {
    if [ -z "${GLOBAL_BUILD_SOURCED}" ]
    then
        echo "fatal: Please run '. dev/build.env'"
        exit 1
    fi

    check_deps  \
        rdar    \
        clang   \
        git     \
        make
}

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

#
# Kick off the entire build proccess
#
build() {
    mkdir -p artifacts/

    build_dir   \
        boot    \
        "bootloader"
}

build_check
build