#!/bin/bash

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

PREFIX_PATH=`pwd`/../install

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

CROSSTOOL=/opt/crosstool/cortex-a7/bin/arm-linux-gnueabi-

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=${CROSSTOOL}gcc
    export CXX=${CROSSTOOL}g++
    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_libevent()
{
    SRC_NAME=libevent-2.1.11-stable
    PACK_SUFIX=tar.gz

    if [ -f ${PREFIX_PATH}/lib/libevent.so ] ; then
        return 0;
    fi

    msg_banner "Start cross compile $SRC_NAME "

    if [ ! -f ${SRC_NAME}.${PACK_SUFIX} ] ; then
        #wget https://github.com/libevent/libevent/releases/download/release-2.1.11-stable/${SRC_NAME}.${PACK_SUFIX}
        wget ${LYFTP_SRC}/${SRC_NAME}.${PACK_SUFIX}

        check_result "ERROR: download ${SRC_NAME} failure"
    fi

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

    ./configure --prefix=${PREFIX_PATH} ${CONFIG_CROSS}  --enable-thread-support --enable-openssl --enable-function-sections
    check_result "ERROR: configure ${SRC_NAME} failure"

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

    cd -
}


export_cross

compile_libevent