#!/bin/bash

#+--------------------------------------------------------------------------------------------
#|Description:  This shell script used download and compile QT5 for ARM
#|     Author:  GuoWenxue <guowenxue@gmail.com>
#|
#|   WARNNING:  QT >= 5.7 need crosstool g++ support C++11 support
#|              QT configure need host g++ support C++11, so need config g++ on ubuntu host:
#|              sudo update-alternatives --config g++
#|
#|  ChangeLog:
#|           1, Initialize 1.0.0 on 2011.04.12
#+--------------------------------------------------------------------------------------------

JOBS=`cat /proc/cpuinfo |grep "processor"|wc -l`

PRJ_PATH=`pwd`
LIBS_PATH=$PRJ_PATH/install

QT_INST_PATH=/apps/qt5_rpi

# sudo apt install gcc-arm-linux-gnueabihf g++-arm-linux-gnueabihf
CROSSTOOL=arm-linux-gnueabihf-

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

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

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

function compile_qt5()
{
    # 5.6.3 is the last version can be compiled by g++ without c++11 support
    SRC_NAME=qt-everywhere-opensource-src-5.6.3

    PACK_SUFIX=tar.xz

    #rm -rf ${QT_INST_PATH}/lib/libQt5Gui.so
    if [ -f ${QT_INST_PATH}/lib/libQt5Gui.so ] ; then
        msg_banner "Already cross compile $SRC_NAME "
        return 0;
    fi

    if [ ! -f ${SRC_NAME}.${PACK_SUFIX} ] ; then 
        msg_banner "Start download ${SRC_NAME}.${PACK_SUFIX} "
        wget ${LYFTP_SRC}/qt/${SRC_NAME}.${PACK_SUFIX}
        check_result "ERROR: download ${SRC_NAME} failure"
    fi

    msg_banner "Start decompress $SRC_NAME.${PACK_SUFIX} and patch"
    if [ ! -d ${SRC_NAME} ] ; then
        tar -xJf ${SRC_NAME}.${PACK_SUFIX}
		patch -p0 < patch/${SRC_NAME}.patch
    fi

    cd ${SRC_NAME}

    QMAKE_FILE=qtbase/mkspecs/linux-arm-gnueabi-g++/qmake.conf

    grep "`basename ${CROSSTOOL}`" ${QMAKE_FILE} > /dev/null 2>&1
    if [ $? != 0 ] ; then 
        sed -i "s|arm-linux-gnueabi-|$CROSSTOOL|" ${QMAKE_FILE}
    fi 

    ./configure -opensource -confirm-license -release -shared -strip -prefix ${QT_INST_PATH} -no-c++11 \
        -xplatform linux-arm-gnueabi-g++ -qt-freetype -no-libproxy -no-avx  -make libs \
        -qt-zlib -no-mtdev -no-gif -qt-libpng  -qt-libjpeg -no-openssl -no-cups -no-dbus -pch \
        -no-xcb -no-eglfs -no-kms -no-directfb -no-opengl -linuxfb -qpa linuxfb \
        -no-sse2 -no-sse3 -no-ssse3 -no-sse4.1 -no-sse4.2 -no-rpath -no-glib \
        -no-separate-debug-info -nomake tests -nomake tools -nomake examples \
        -tslib -I${LIBS_PATH}/include/  -L${LIBS_PATH}/lib/  -I${QT_INST_PATH}/include/  -L${QT_INST_PATH}/lib/ 

    msg_banner "Start cross compile $SRC_NAME "
    make -j${JOBS} && make install
    check_result "ERROR: compile ${SRC_NAME} failure"
    cp ./qtbase/plugins/platforms/libqlinuxfb.so  ${QT_INST_PATH}/lib
    cp -af ${LIBS_PATH}/lib/libts*so* ${QT_INST_PATH}/lib

    cd -
}

function compile_tslib()
{
    SRC_NAME=tslib-1.22
    PACK_SUFIX=tar.bz2


    if [ -f ${LIBS_PATH}/lib/libts.so ] ; then
        msg_banner "Already cross compile $SRC_NAME "
        return 0;
    fi  

	mkdir -p libs && cd libs

    msg_banner "Start cross compile $SRC_NAME "

    if [ ! -f ${SRC_NAME}.${PACK_SUFIX} ] ; then
        #tslib official download address: https://github.com/libts/tslib/tags
        wget ${LYFTP_SRC}/${SRC_NAME}.${PACK_SUFIX}
        check_result "ERROR: download ${SRC_NAME} failure"
    fi  

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

    ./configure --prefix=${LIBS_PATH} ${CONFIG_CROSS}
    make && make install

    cd ${PRJ_PATH}
}

function compile_libiconv()
{
    SRC_NAME=libiconv-1.15
    PACK_SUFIX=tar.gz

    if [ -f ${LIBS_PATH}/lib/libiconv.so ] ; then
        msg_banner "Already cross compile $SRC_NAME "
        return 0;
    fi  

	mkdir -p libs && cd libs

    msg_banner "Start cross compile $SRC_NAME "

    if [ ! -f ${SRC_NAME}.${PACK_SUFIX} ] ; then
        #wget https://ftp.gnu.org/gnu/libiconv/${SRC_NAME}.${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=${LIBS_PATH} ${CONFIG_CROSS}
    make && make install

    cd ${PRJ_PATH}
}


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 unexport_cross()
{
    # export cross toolchain
    export CC=""
    export AS=""
    export AR=""
    export LD=""
    export NM=""
    export RANLIB=""
    export OBJDUMP=""
    export STRIP=""

    # export cross configure 
    export CONFIG_CROSS=""

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

export_cross

compile_libiconv

compile_tslib

unexport_cross

compile_qt5