#!/bin/bash

#+--------------------------------------------------------------------------------------------
#|Description:  This shell script used download and compile i2c-tools for ARM
#|     Author:  GuoWenxue <guowenxue@gmail.com>
#|  ChangeLog:
#|           1, Initialize 1.0.0 on 2011.04.12
#+--------------------------------------------------------------------------------------------

PREFIX_PATH=`pwd`/../install/
mkdir -p ${PREFIX_PATH}/{bin,sbin,include,lib}

LYFTP_SRC=ftp://master.iot-yun.club/src/

CROSSTOOL=/opt/xtools/arm920t/bin/arm-linux-

function msg_banner()
{
    echo ""
    echo "+-----------------------------------------------------------------------"
    echo "|  $1 "
    echo "+-----------------------------------------------------------------------"
    echo ""
}

function check_result()
{
    if [ $? != 0 ] ; then
       echo ""
       echo "+-----------------------------------------------------------------------"
       echo "|  $1 "
       echo "+-----------------------------------------------------------------------"
       echo ""
       exit ;
    fi
}

function export_cross()
{
    # export cross toolchain
    export CC=${CROSSTOOL}gcc
    export AS=${CROSSTOOL}as
    export AR=${CROSSTOOL}ar
    export LD=${CROSSTOOL}ld
    export NM=${CROSSTOOL}nm
    export RANLIB=${CROSSTOOL}ranlib
    export OBJDUMP=${CROSSTOOL}objdump
    export STRIP=${CROSSTOOL}strip

    # export cross configure 
    export CONFIG_CROSS=" --build=i686-pc-linux --host=arm-linux "

    # Clear LDFLAGS and CFLAGS
    export LDFLAGS=
    export CFLAGS=
}

function compile_i2ctools()
{
    SRC_NAME=i2c-tools-4.1
    PACK_SUFIX=tar.xz

    if [ -f ${PREFIX_PATH}/sbin/i2cdetect ] ; then
        msg_banner "$SRC_NAME already compile and installed"
        return 0;
    fi

    msg_banner "Start cross compile $SRC_NAME "

    if [ ! -f ${SRC_NAME}.${PACK_SUFIX} ] ; then
        #wget https://mirrors.edge.kernel.org/pub/software/utils/i2c-tools/i2c-tools-4.1.tar.xz
        wget $LYFTP_SRC/$SRC_NAME.$PACK_SUFIX
        check_result "ERROR: download ${SRC_NAME} failure"
    fi

    tar -xJf ${SRC_NAME}.${PACK_SUFIX}
    cd ${SRC_NAME}

    make PREFIX=${PREFIX_PATH} && make PREFIX=${PREFIX_PATH} install
    check_result "ERROR: compile ${SRC_NAME} failure"

    cd -
}


export_cross

compile_i2ctools