#!/bin/bash
# Build Dependencies Checker
# ToAruOS Kernel / Userspace

function INFO {
    echo -e "\033[34;1minfo\033[0m $1" >&2
}

function WARN {
    echo -e "\033[33;1mwarning\033[0m $1" >&2
}

function ERROR {
    echo -e "\033[31;1merror\033[0m $1" >&2
}

function BAIL {
    exit 1
}

INFO "Checking for required tools (one-time check)..."

if [ -z `which clang` ] ; then
    WARN "Missing clang"
    if [ -z `which gcc` ] ; then
        WARN "Missing gcc"
        if [ -z `which cc` ] ; then
            ERROR "No compiler found"
            BAIL
        fi
    fi
fi

if [ -z `which genext2fs` ] ; then
    ERROR "Missing genext2fs"
    INFO  "You can probably get it from a package of the same name."
    BAIL
fi

if [ -z `which qemu` ] ; then
    if [ -z `which qemu-system-i386` ] ; then
        ERROR "Missing qemu"
        INFO  "You can probably install it from a package of the same name."
    fi
    ERROR "qemu is installed, but not as 'qemu'"
    INFO  "You have a version of qemu which does not provide the 'qemu' binary."
    INFO  "You should run 'ln -s ~/bin/qemu \`which qemu-system-i386\` or similar to correct this."
fi