##!/bin/bash
#
# scripts/build.sh
# (c) Copyright 2013
# Allwinner Technology Co., Ltd. <www.allwinnertech.com>
# James Deng <csjamesdeng@allwinnertech.com>
#
# This program is free software; you can redistribute it and/or modify
# it under the terms of the GNU General Public License as published by
# the Free Software Foundation; either version 2 of the License, or
# (at your option) any later version.

set -e

build_buildroot()
{
    if [ ! -f ${LICHEE_BR_OUT}/.config ] ; then
        printf "\nUsing default config ...\n\n"
        make O=${LICHEE_BR_OUT} -C ${LICHEE_BR_DIR} ${LICHEE_BR_DEFCONF}
    fi

    make O=${LICHEE_BR_OUT} -C ${LICHEE_BR_DIR} LICHEE_GEN_ROOTFS=n \
        BR2_JLEVEL=${LICHEE_JLEVEL}
}

build_toolchain()
{
    local tooldir="${LICHEE_BR_OUT}/external-toolchain"
    mkdir -p ${tooldir}
    if [ -f ${tooldir}/.installed ] ; then
        printf "external toolchain has been installed\n"
    else
        printf "installing external toolchain\n"
        printf "please wait for a few minutes ...\n"
        tar --strip-components=1 \
            -jxf ${LICHEE_BR_DIR}/dl/gcc-linaro.tar.bz2 \
            -C ${tooldir}
        [ $? -eq 0 ] && touch ${tooldir}/.installed
    fi

    export PATH=${tooldir}/bin:${PATH}
}

EXTERNAL_DIR=${LICHEE_BR_DIR}/external-packages
DESTDIR=${LICHEE_BR_DIR}/images
STAGING_DIR=${LICHEE_BR_OUT}/staging
INCDIR=${STAGING_DIR}/usr/include
TARGET_DIR=${LICHEE_BR_OUT}/target
TARGET_SYSROOT_OPT="--sysroot=${STAGING_DIR}"

CROSS_COMPILE=arm-linux-gnueabi-

TARGET_AR=${CROSS_COMPILE}ar
TARGET_AS=${CROSS_COMPILE}as
TARGET_CC="${CROSS_COMPILE}gcc ${TARGET_SYSROOT_OPT}"
TARGET_CPP="${CROSS_COMPILE}cpp ${TARGET_SYSROOT_OPT}"
TARGET_CXX="${CROSS_COMPILE}g++ ${TARGET_SYSROOT_OPT}"
TARGET_FC="${CROSS_COMPILE}gfortran ${TARGET_SYSROOT_OPT}"
TARGET_LD="${CROSS_COMPILE}ld ${TARGET_SYSROOT_OPT}"
TARGET_NM="${CROSS_COMPILE}nm"
TARGET_RANLIB="${CROSS_COMPILE}ranlib"
TARGET_OBJCOPY="${CROSS_COMPILE}objcopy"
TARGET_OBJDUMP="${CROSS_COMPILE}objdump"
TARGET_CFLAGS="-pipe -Os  -mtune=cortex-a7 -march=armv7-a -mabi=aapcs-linux -msoft-float -D_LARGEFILE_SOURCE -D_LARGEFILE64_SOURCE -D_FILE_OFFSET_BITS=64 -I${INCDIR}"

BUILD_OPTIONS="DESTDIR=${DESTDIR} CROSS_COMPILE=${CROSS_COMPILE} \
    STAGING_DIR=${STAGING_DIR} TARGET_DIR=${TARGET_DIR} CC=\"${TARGET_CC}\" \
    AR=${TARGET_AR} AS=${TARGET_AS} CPP=\"${TARGET_CPP}\" CXX=\"${TARGET_CXX}\" \
    FC=\"${TARGET_FC}\" LD=\"${TARGET_LD}\" NM=${TARGET_NM} RANLIB=${TARGET_RANLIB} \
    OBJCOPY=${TARGET_OBJCOPY} OBJDUMP=${TARGET_OBJDUMP} CFLAGS=\"${TARGET_CFLAGS}\""

build_external()
{
    for dir in ${EXTERNAL_DIR}/* ; do
        if [ -f ${dir}/Makefile ]; then
            BUILD_COMMAND="make -C ${dir} ${BUILD_OPTIONS} all"
            eval $BUILD_COMMAND
            BUILD_COMMAND="make -C ${dir} ${BUILD_OPTIONS} install"
            eval $BUILD_COMMAND
        fi
    done
}

case "$1" in
    clean)
        rm -rf ${LICHEE_BR_OUT}
        ;;
    *)
        if [ "x${LICHEE_PLATFORM}" = "xlinux" ] ; then
            build_buildroot
            export PATH=${LICHEE_BR_OUT}/external-toolchain/bin:$PATH
            build_external
        else
            build_toolchain
        fi
        ;;
esac