#!/bin/bash

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

PREFIX_PATH=`pwd`/install
OPENSSL_PATH=`pwd`/../openssl/install/

if [ -z $CROSSTOOL ] ; then
   CROSSTOOL=/opt/rpi/arm-bcm2708/arm-linux-gnueabihf/bin/arm-linux-gnueabihf-
fi

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_paho()
{
    SRC_NAME=paho.mqtt.c-1.2.1
    PACK_SUFIX=tar.gz

    if [ -f ${PREFIX_PATH}/ethtool ] ; then
        return 0;
    fi

    msg_banner "Start cross compile $SRC_NAME "

    if [ ! -f ${SRC_NAME}.${PACK_SUFIX} ] ; then
        wget https://github.com/eclipse/paho.mqtt.c/archive/v1.2.1.tar.gz -O ${SRC_NAME}.${PACK_SUFIX}
        check_result "ERROR: download ${SRC_NAME} failure"
    fi

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

    export CFLAGS=-I${OPENSSL_PATH}/include
    export LDFLAGS=-L${OPENSSL_PATH}/lib

    mkdir -p ${PREFIX_PATH}/usr/local/{bin,include,lib}
    make && make install DESTDIR=${PREFIX_PATH}
    
    cp -af build/output/samples/ ${PREFIX_PATH}/

    cd ${PREFIX_PATH}/usr/local/lib
      ln -s libpaho-mqtt3a.so.1.0 libpaho-mqtt3a.so.1
      ln -s libpaho-mqtt3as.so.1.0  libpaho-mqtt3as.so.1
      ln -s libpaho-mqtt3c.so.1.0  libpaho-mqtt3c.so.1
      ln -s  libpaho-mqtt3cs.so.1.0 libpaho-mqtt3cs.so.1
      tar -cf libpaho-mqtt.tar *
      mv libpaho-mqtt.tar ${PREFIX_PATH}
    cd -


    check_result "ERROR: compile ${SRC_NAME} failure"

    cd -
}


export_cross

if [ ! -d ${OPENSSL_PATH}/include ] ; then
   cd ../openssl
   ./build.sh
   cd -
fi

compile_paho