#!/bin/bash

# See this page for more details:
# http://dev.chromium.org/chromium-os/how-tos-and-troubleshooting/kernel-configuration

if [[ -z "${CHROMEOS_KERNEL_FAMILY}" ]]; then
    echo "CHROMEOS_KERNEL_FAMILY env variable not set; see crrev.com/c/3398813" 1>&2
    echo "If running manually, try CHROMEOS_KERNEL_FAMILY=chromeos" 1>&2
    exit 1
fi

family="${CHROMEOS_KERNEL_FAMILY}"

flavourconf=$(find chromeos/config/${family} -name $1.flavour.config)
if [ ! -f "${flavourconf}" ]; then
    echo "Found no flavour configuration for '$1'." 1>&2
    exit 1
fi

outputfile="${2:-.config}"

archconfdir=$(dirname ${flavourconf})
arch=$(basename ${archconfdir})

# Generate .config
cat "chromeos/config/${family}/base.config" \
    "${archconfdir}/common.config" \
    "${flavourconf}" > "${outputfile}"