- 環境介紹
主機操作系統：Ubuntu18.04 64位
目標平臺：致遠電子的M6708U 芯片：imx6
交叉工具：arm-poky-linux-gnueabi 版本gcc4.9.1
- 解壓並安裝
把從官網下載的qt-everywhere-opensource-src-5.9.1.tar.xz，
放到Ubuntu18.04下的/opt
運行以下命令解壓Qt5.9.1源碼
/opt# tar -xvf qt-everywhere-opensource-src-5.9.1.tar.xz
把致遠電子提供的文件系統rootfs.tar.gz，放到Ubuntu18.04下的/opt，運行以下命令解壓，並刪除Qt相關文件庫
/opt# tar -xvf rootfs.tar.gz
/opt# rm rootfs/usr/lib/libQt*
把致遠電子提供的交叉編譯工具鏈放在/opt下，執行以下命令安裝
/opt#./poky-glibc-x86_64-meta-toolchain-qt5-cortexa9hf-vfp-neon-toolchain-1.7.sh
把文件系統rootfs下的相關庫鏈接到Ubuntu的/lib和/usr/lib目錄中：
/opt# ln -s /opt/rootfs/lib/libpthread.so.0 /lib/libpthread.so.0
/opt# ln -s /opt/rootfs/lib/libc.so.6 /lib/libc.so.6
/opt# ln –s/opt/rootfs/usr/lib/libpthread_nonshared.a /usr/lib/libpthread_nonshared.a
/opt# ln-s /opt/rootfs/usr/lib/libc_nonshared.a /usr/lib/libc_nonshared.a
/opt# ln-s /opt/rootfs /lib/ld-2.20.so/lib/ld-linux-armhf.so.3
把致遠電子提供的觸摸驅動tslib-1.21-new.tar.gz放在/opt下，執行以下命令安裝：
/opt#tar-xvf tslib-1.21-new.tar.gz
- 修改源碼實現界面可旋轉顯示的功能
把/qtbase/src/plugins/platforms/linuxfb目錄下的qlinuxfbscreen.cpp和qlinuxfbscreen.h兩個文件進行修改，修改的源碼如下所示：
qlinuxfbscreen.h：
/****************************************************************************
**
** Copyright (C) 2016 The Qt Company Ltd.
** Contact: https://www.qt.io/licensing/
**
** This file is part of the plugins of the Qt Toolkit.
**
** $QT_BEGIN_LICENSE:LGPL$
** Commercial License Usage
** Licensees holding valid commercial Qt licenses may use this file in
** accordance with the commercial license agreement provided with the
** Software or, alternatively, in accordance with the terms contained in
** a written agreement between you and The Qt Company. For licensing terms
** and conditions see https://www.qt.io/terms-conditions. For further
** information use the contact form at https://www.qt.io/contact-us.
**
** GNU Lesser General Public License Usage
** Alternatively, this file may be used under the terms of the GNU Lesser
** General Public License version 3 as published by the Free Software
** Foundation and appearing in the file LICENSE.LGPL3 included in the
** packaging of this file. Please review the following information to
** ensure the GNU Lesser General Public License version 3 requirements
** will be met: https://www.gnu.org/licenses/lgpl-3.0.html.
**
** GNU General Public License Usage
** Alternatively, this file may be used under the terms of the GNU
** General Public License version 2.0 or (at your option) the GNU General
** Public license version 3 or any later version approved by the KDE Free
** Qt Foundation. The licenses are as published by the Free Software
** Foundation and appearing in the file LICENSE.GPL2 and LICENSE.GPL3
** included in the packaging of this file. Please review the following
** information to ensure the GNU General Public License requirements will
** be met: https://www.gnu.org/licenses/gpl-2.0.html and
** https://www.gnu.org/licenses/gpl-3.0.html.
**
** $QT_END_LICENSE$
**
****************************************************************************/
#ifndef QLINUXFBSCREEN_H
#define QLINUXFBSCREEN_H
#include <QtFbSupport/private/qfbscreen_p.h>
QT_BEGIN_NAMESPACE
class QPainter;
class QFbCursor;
class QLinuxFbScreen : public QFbScreen
{
Q_OBJECT
public:
QLinuxFbScreen(const QStringList &args);
~QLinuxFbScreen();
bool initialize() override;
QPixmap grabWindow(WId wid, int x, int y, int width, int height) const override;
QRegion doRedraw() override;
private:
QStringList mArgs;
int mFbFd;
int mTtyFd;
int mRotation; //add by qingjie 20200424
QImage mFbScreenImage;
int mBytesPerLine;
int mOldTtyMode;
struct {
uchar *data;
int offset, size;
} mMmap;
QPainter *mBlitter;
};
QT_END_NAMESPACE
#endif // QLINUXFBSCREEN_H
qlinuxfbscreen.cpp：
/****************************************************************************
**
** Copyright (C) 2016 The Qt Company Ltd.
** Contact: https://www.qt.io/licensing/
**
** This file is part of the plugins of the Qt Toolkit.
**
** $QT_BEGIN_LICENSE:LGPL$
** Commercial License Usage
** Licensees holding valid commercial Qt licenses may use this file in
** accordance with the commercial license agreement provided with the
** Software or, alternatively, in accordance with the terms contained in
** a written agreement between you and The Qt Company. For licensing terms
** and conditions see https://www.qt.io/terms-conditions. For further
** information use the contact form at https://www.qt.io/contact-us.
**
** GNU Lesser General Public License Usage
** Alternatively, this file may be used under the terms of the GNU Lesser
** General Public License version 3 as published by the Free Software
** Foundation and appearing in the file LICENSE.LGPL3 included in the
** packaging of this file. Please review the following information to
** ensure the GNU Lesser General Public License version 3 requirements
** will be met: https://www.gnu.org/licenses/lgpl-3.0.html.
**
** GNU General Public License Usage
** Alternatively, this file may be used under the terms of the GNU
** General Public License version 2.0 or (at your option) the GNU General
** Public license version 3 or any later version approved by the KDE Free
** Qt Foundation. The licenses are as published by the Free Software
** Foundation and appearing in the file LICENSE.GPL2 and LICENSE.GPL3
** included in the packaging of this file. Please review the following
** information to ensure the GNU General Public License requirements will
** be met: https://www.gnu.org/licenses/gpl-2.0.html and
** https://www.gnu.org/licenses/gpl-3.0.html.
**
** $QT_END_LICENSE$
**
****************************************************************************/
#include "qlinuxfbscreen.h"
#include <QtFbSupport/private/qfbcursor_p.h>
#include <QtFbSupport/private/qfbwindow_p.h>
#include <QtCore/QFile>
#include <QtCore/QRegularExpression>
#include <QtGui/QPainter>
#include <private/qcore_unix_p.h> // overrides QT_OPEN
#include <qimage.h>
#include <qdebug.h>
#include <unistd.h>
#include <stdlib.h>
#include <sys/ioctl.h>
#include <sys/types.h>
#include <sys/stat.h>
#include <sys/mman.h>
#include <linux/kd.h>
#include <fcntl.h>
#include <errno.h>
#include <stdio.h>
#include <limits.h>
#include <signal.h>
#include <linux/fb.h>
QT_BEGIN_NAMESPACE
static int openFramebufferDevice(const QString &dev)
{
int fd = -1;
if (access(dev.toLatin1().constData(), R_OK|W_OK) == 0)
fd = QT_OPEN(dev.toLatin1().constData(), O_RDWR);
if (fd == -1) {
if (access(dev.toLatin1().constData(), R_OK) == 0)
fd = QT_OPEN(dev.toLatin1().constData(), O_RDONLY);
}
return fd;
}
static int determineDepth(const fb_var_screeninfo &vinfo)
{
int depth = vinfo.bits_per_pixel;
if (depth== 24) {
depth = vinfo.red.length + vinfo.green.length + vinfo.blue.length;
if (depth <= 0)
depth = 24; // reset if color component lengths are not reported
} else if (depth == 16) {
depth = vinfo.red.length + vinfo.green.length + vinfo.blue.length;
if (depth <= 0)
depth = 16;
}
return depth;
}
static QRect determineGeometry(const fb_var_screeninfo &vinfo, const QRect &userGeometry)
{
int xoff = vinfo.xoffset;
int yoff = vinfo.yoffset;
int w, h;
if (userGeometry.isValid()) {
w = userGeometry.width();
h = userGeometry.height();
if ((uint)w > vinfo.xres)
w = vinfo.xres;
if ((uint)h > vinfo.yres)
h = vinfo.yres;
int xxoff = userGeometry.x(), yyoff = userGeometry.y();
if (xxoff != 0 || yyoff != 0) {
if (xxoff < 0 || xxoff + w > (int)(vinfo.xres))
xxoff = vinfo.xres - w;
if (yyoff < 0 || yyoff + h > (int)(vinfo.yres))
yyoff = vinfo.yres - h;
xoff += xxoff;
yoff += yyoff;
} else {
xoff += (vinfo.xres - w)/2;
yoff += (vinfo.yres - h)/2;
}
} else {
w = vinfo.xres;
h = vinfo.yres;
}
if (w == 0 || h == 0) {
qWarning("Unable to find screen geometry, using 320x240");
w = 320;
h = 240;
}
return QRect(xoff, yoff, w, h);
}
static QSizeF determinePhysicalSize(const fb_var_screeninfo &vinfo, const QSize &mmSize, const QSize &res)
{
int mmWidth = mmSize.width(), mmHeight = mmSize.height();
if (mmWidth <= 0 && mmHeight <= 0) {
if (vinfo.width != 0 && vinfo.height != 0
&&vinfo.width != UINT_MAX && vinfo.height != UINT_MAX) {
mmWidth = vinfo.width;
mmHeight = vinfo.height;
} else {
const int dpi = 100;
mmWidth = qRound(res.width() * 25.4 / dpi);
mmHeight = qRound(res.height() * 25.4 / dpi);
}
} else if (mmWidth > 0 && mmHeight <= 0) {
mmHeight = res.height() * mmWidth/res.width();
} else if (mmHeight > 0 && mmWidth <= 0) {
mmWidth = res.width() * mmHeight/res.height();
}
return QSize(mmWidth, mmHeight);
}
static QImage::Format determineFormat(const fb_var_screeninfo &info, int depth)
{
const fb_bitfield rgba[4] = { info.red, info.green,
info.blue, info.transp };
QImage::Format format = QImage::Format_Invalid;
switch (depth) {
case 32: {
const fb_bitfield argb8888[4] = {{16, 8, 0}, {8, 8, 0},
{0, 8, 0}, {24, 8, 0}};
const fb_bitfield abgr8888[4] = {{0, 8, 0}, {8, 8, 0},
{16, 8, 0}, {24, 8, 0}};
if (memcmp(rgba, argb8888, 4 * sizeof(fb_bitfield)) == 0) {
format = QImage::Format_ARGB32;
} else if (memcmp(rgba, argb8888, 3 * sizeof(fb_bitfield)) == 0) {
format = QImage::Format_RGB32;
} else if (memcmp(rgba, abgr8888, 3 * sizeof(fb_bitfield)) == 0) {
format = QImage::Format_RGB32;
// pixeltype = BGRPixel;
}
break;
}
case 24: {
const fb_bitfield rgb888[4] = {{16, 8, 0}, {8, 8, 0},
{0, 8, 0}, {0, 0, 0}};
const fb_bitfield bgr888[4] = {{0, 8, 0}, {8, 8, 0},
{16, 8, 0}, {0, 0, 0}};
if (memcmp(rgba, rgb888, 3 * sizeof(fb_bitfield)) == 0) {
format = QImage::Format_RGB888;
} else if (memcmp(rgba, bgr888, 3 * sizeof(fb_bitfield)) == 0) {
format = QImage::Format_RGB888;
// pixeltype = BGRPixel;
}
break;
}
case 18: {
const fb_bitfield rgb666[4] = {{12, 6, 0}, {6, 6, 0},
{0, 6, 0}, {0, 0, 0}};
if (memcmp(rgba, rgb666, 3 * sizeof(fb_bitfield)) == 0)
format = QImage::Format_RGB666;
break;
}
case 16: {
const fb_bitfield rgb565[4] = {{11, 5, 0}, {5, 6, 0},
{0, 5, 0}, {0, 0, 0}};
const fb_bitfield bgr565[4] = {{0, 5, 0}, {5, 6, 0},
{11, 5, 0}, {0, 0, 0}};
if (memcmp(rgba, rgb565, 3 * sizeof(fb_bitfield)) == 0) {
format = QImage::Format_RGB16;
} else if (memcmp(rgba, bgr565, 3 * sizeof(fb_bitfield)) == 0) {
format = QImage::Format_RGB16;
// pixeltype = BGRPixel;
}
break;
}
case 15: {
const fb_bitfield rgb1555[4] = {{10, 5, 0}, {5, 5, 0},
{0, 5, 0}, {15, 1, 0}};
const fb_bitfield bgr1555[4] = {{0, 5, 0}, {5, 5, 0},
{10, 5, 0}, {15, 1, 0}};
if (memcmp(rgba, rgb1555, 3 * sizeof(fb_bitfield)) == 0) {
format = QImage::Format_RGB555;
} else if (memcmp(rgba, bgr1555, 3 * sizeof(fb_bitfield)) == 0) {
format = QImage::Format_RGB555;
// pixeltype = BGRPixel;
}
break;
}
case 12: {
const fb_bitfield rgb444[4] = {{8, 4, 0}, {4, 4, 0},
{0, 4, 0}, {0, 0, 0}};
if (memcmp(rgba, rgb444, 3 * sizeof(fb_bitfield)) == 0)
format = QImage::Format_RGB444;
break;
}
case 8:
break;
case 1:
format = QImage::Format_Mono; //###: LSB???
break;
default:
break;
}
return format;
}
static int openTtyDevice(const QString &device)
{
const char *const devs[] = { "/dev/tty0", "/dev/tty", "/dev/console", 0 };
int fd = -1;
if (device.isEmpty()) {
for (const char * const *dev = devs; *dev; ++dev) {
fd = QT_OPEN(*dev, O_RDWR);
if (fd != -1)
break;
}
} else {
fd = QT_OPEN(QFile::encodeName(device).constData(), O_RDWR);
}
return fd;
}
static void switchToGraphicsMode(int ttyfd, bool doSwitch, int *oldMode)
{
// Do not warn if the switch fails: the ioctl fails when launching from a
// remote console and there is nothing we can do about it. The matching
// call in resetTty should at least fail then, too, so we do no harm.
if (ioctl(ttyfd, KDGETMODE, oldMode) == 0) {
if (doSwitch && *oldMode != KD_GRAPHICS)
ioctl(ttyfd, KDSETMODE, KD_GRAPHICS);
}
}
static void resetTty(int ttyfd, int oldMode)
{
ioctl(ttyfd, KDSETMODE, oldMode);
QT_CLOSE(ttyfd);
}
static void blankScreen(int fd, bool on)
{
ioctl(fd, FBIOBLANK, on ? VESA_POWERDOWN : VESA_NO_BLANKING);
}
QLinuxFbScreen::QLinuxFbScreen(const QStringList &args)
: mArgs(args), mFbFd(-1),mTtyFd(-1), mRotation(0),mBlitter(0)//add qingjie 20200424
{
mMmap.data = 0;
}
QLinuxFbScreen::~QLinuxFbScreen()
{
if (mFbFd != -1) {
if (mMmap.data)
munmap(mMmap.data - mMmap.offset, mMmap.size);
close(mFbFd);
}
if (mTtyFd != -1)
resetTty(mTtyFd, mOldTtyMode);
delete mBlitter;
}
bool QLinuxFbScreen::initialize()
{
QRegularExpression ttyRx(QLatin1String("tty=(.*)"));
QRegularExpression fbRx(QLatin1String("fb=(.*)"));
QRegularExpression mmSizeRx(QLatin1String("mmsize=(\\d+)x(\\d+)"));
QRegularExpression sizeRx(QLatin1String("size=(\\d+)x(\\d+)"));
QRegularExpression offsetRx(QLatin1String("offset=(\\d+)x(\\d+)"));
QRegularExpression rotationRx(QLatin1String("roration=(0|90|180|270)"));//add qingjie 20200424
QString fbDevice, ttyDevice;
QSize userMmSize;
QRect userGeometry;
bool doSwitchToGraphicsMode = true;
// Parse arguments
for (const QString &arg : qAsConst(mArgs)) {
QRegularExpressionMatch match;
if (arg == QLatin1String("nographicsmodeswitch"))
doSwitchToGraphicsMode = false;
else if (arg.contains(mmSizeRx, &match))
userMmSize = QSize(match.captured(1).toInt(), match.captured(2).toInt());
else if (arg.contains(sizeRx, &match))
userGeometry.setSize(QSize(match.captured(1).toInt(), match.captured(2).toInt()));
else if (arg.contains(offsetRx, &match))
userGeometry.setTopLeft(QPoint(match.captured(1).toInt(), match.captured(2).toInt()));
else if (arg.contains(ttyRx, &match))
ttyDevice = match.captured(1);
else if (arg.contains(fbRx, &match))
fbDevice = match.captured(1);
else if (arg.contains(rotationRx,&match))//add qingjie 20200424
mRotation = match.captured(1).toInt();//add qingjie 20200424
}
if (fbDevice.isEmpty()) {
fbDevice = QLatin1String("/dev/fb0");
if (!QFile::exists(fbDevice))
fbDevice = QLatin1String("/dev/graphics/fb0");
if (!QFile::exists(fbDevice)) {
qWarning("Unable to figure out framebuffer device. Specify it manually.");
return false;
}
}
// Open the device
mFbFd = openFramebufferDevice(fbDevice);
if (mFbFd == -1) {
qErrnoWarning(errno, "Failed to open framebuffer %s", qPrintable(fbDevice));
return false;
}
// Read the fixed and variable screen information
fb_fix_screeninfo finfo;
fb_var_screeninfo vinfo;
memset(&vinfo, 0, sizeof(vinfo));
memset(&finfo, 0, sizeof(finfo));
if (ioctl(mFbFd, FBIOGET_FSCREENINFO, &finfo) != 0) {
qErrnoWarning(errno, "Error reading fixed information");
return false;
}
if (ioctl(mFbFd, FBIOGET_VSCREENINFO, &vinfo)) {
qErrnoWarning(errno, "Error reading variable information");
return false;
}
mDepth = determineDepth(vinfo);
mBytesPerLine = finfo.line_length;
QRect geometry = determineGeometry(vinfo, userGeometry);
//add qingjie 20200424 start
QRect originalGeometry = geometry;
if(90 == mRotation ||270==mRotation)
{
int tmp = geometry.width();
geometry.setWidth(geometry.height());
geometry.setHeight(tmp);
}
//add qingjie 20200424 end
mGeometry = QRect(QPoint(0, 0), geometry.size());
mFormat = determineFormat(vinfo, mDepth);
//mPhysicalSize = determinePhysicalSize(vinfo, userMmSize, geometry.size()); //modify qingjie 20200424
mPhysicalSize = determinePhysicalSize(vinfo, userMmSize, originalGeometry.size()); //modify qingjie 20200424
// mmap the framebuffer
mMmap.size = finfo.smem_len;
uchar *data = (unsigned char *)mmap(0, mMmap.size, PROT_READ | PROT_WRITE, MAP_SHARED, mFbFd, 0);
if ((long)data == -1) {
qErrnoWarning(errno, "Failed to mmap framebuffer");
return false;
}
//mMmap.offset = geometry.y() * mBytesPerLine + geometry.x() * mDepth / 8; //modify qingjie 20200424
mMmap.offset = originalGeometry.y() * mBytesPerLine + originalGeometry.x() * mDepth / 8; //modify qingjie 20200424
mMmap.data = data + mMmap.offset;
QFbScreen::initializeCompositor();
//mFbScreenImage = QImage(mMmap.data, geometry.width(), geometry.height(), mBytesPerLine, mFormat); //modify qingjie 20200424
mFbScreenImage = QImage(mMmap.data, originalGeometry.width(), originalGeometry.height(), mBytesPerLine, mFormat);//modify qingjie 20200424
mCursor = new QFbCursor(this);
mTtyFd = openTtyDevice(ttyDevice);
if (mTtyFd == -1)
qErrnoWarning(errno, "Failed to open tty");
switchToGraphicsMode(mTtyFd, doSwitchToGraphicsMode, &mOldTtyMode);
blankScreen(mFbFd, false);
return true;
}
QRegion QLinuxFbScreen::doRedraw()
{
QRegion touched = QFbScreen::doRedraw();
if (touched.isEmpty())
return touched;
if (!mBlitter)
mBlitter = new QPainter(&mFbScreenImage);
mBlitter->setCompositionMode(QPainter::CompositionMode_Source);
//for (const QRect &rect : touched) //modify qingjie 20200424
// mBlitter->drawImage(rect, mScreenImage, rect); //modify qingjie 20200424
const QVector<QRect> rects = touched.rects();
//add qingjie 20200424 start
for (int i = 0; i < rects.size(); ++i)
{
if( 90 == mRotation || 270 == mRotation )
{
mBlitter->translate(mGeometry.height()/2, mGeometry.width()/2);
qDebug()<<"mRotation:"<<90;
}
else if(180 == mRotation)
{
mBlitter->translate(mGeometry.width()/2, mGeometry.height()/2);
qDebug()<<"mRotation:"<<180;
}
if( mRotation != 0 )
{
mBlitter->rotate(mRotation);
mBlitter->translate(-mGeometry.width()/2, -mGeometry.height()/2);
}
mBlitter->drawImage(rects[i], mScreenImage, rects[i]);
mBlitter->resetTransform();
}
//add qingjie 20200424 end
return touched;
}
// grabWindow() grabs "from the screen" not from the backingstores.
// In linuxfb's case it will also include the mouse cursor.
QPixmap QLinuxFbScreen::grabWindow(WId wid, int x, int y, int width, int height) const
{
if (!wid) {
if (width < 0)
width = mFbScreenImage.width() - x;
if (height < 0)
height = mFbScreenImage.height() - y;
return QPixmap::fromImage(mFbScreenImage).copy(x, y, width, height);
}
QFbWindow *window = windowForId(wid);
if (window) {
const QRect geom = window->geometry();
if (width < 0)
width = geom.width() - x;
if (height < 0)
height = geom.height() - y;
QRect rect(geom.topLeft() + QPoint(x, y), QSize(width, height));
rect&= window->geometry();
return QPixmap::fromImage(mFbScreenImage).copy(rect);
}
return QPixmap();
}
QT_END_NAMESPACE
- 配置編譯文件
把qt5.9.1中的qtbase/mkspecs/linux-arm-gnueabi-g++/qmake.conf文件修改爲以下內容：
#
# qmake configuration for building with arm-linux-gnueabi-g++
#
MAKEFILE_GENERATOR = UNIX
CONFIG += incremental
QMAKE_INCREMENTAL_STYLE = sublib
#QT_QPA_DEFAULT_PLATFORM = eglfs #linuxfb
IMX6_CFLAGS = -march=armv7-a -mfpu=neon -DLINUX=1 -DEGL_API_FB=1
IMX6_CFLAGS_RELEASE = -O2 $$IMX6_CFLAGS
QMAKE_CFLAGS_RELEASE += $$IMX6_CFLAGS_RELEASE
QMAKE_CXXFLAGS_RELEASE += $$IMX6_CFLAGS_RELEASE
QMAKE_CFLAGS_DEBUG += $$IMX6_CFLAGS
QMAKE_CXXFLAGS_DEBUG += $$IMX6_CFLAGS
include(../common/linux.conf)
include(../common/gcc-base-unix.conf)
include(../common/g++-unix.conf)
# modifications to g++.conf
QMAKE_CC = /opt/poky/1.7/sysroots/x86_64-pokysdk-linux/usr/bin/arm-poky-linux-gnueabi/arm-poky-linux-gnueabi-gcc -mthumb-interwork -mfloat-abi=hard -mtune=cortex-a9
QMAKE_CXX = /opt/poky/1.7/sysroots/x86_64-pokysdk-linux/usr/bin/arm-poky-linux-gnueabi/arm-poky-linux-gnueabi-g++
-mthumb-interwork -mfloat-abi=hard -mtune=cortex-a9
QMAKE_LINK = /opt/poky/1.7/sysroots/x86_64-pokysdk-linux/usr/bin/arm-poky-linux-gnueabi/arm-poky-linux-gnueabi-g++ -mthumb-interwork -mfloat-abi=hard -mtune=cortex-a9
QMAKE_LINK_SHLIB = /opt/poky/1.7/sysroots/x86_64-pokysdk-linux/usr/bin/arm-poky-linux-gnueabi/arm-poky-linux-gnueabi-g++ -mthumb-interwork -mfloat-abi=hard -mtune=cortex-a9
# modifications to linux.conf
QMAKE_AR = /opt/poky/1.7/sysroots/x86_64-pokysdk-linux/usr/bin/arm-poky-linux-gnueabi/arm-poky-linux-gnueabi-ar cqs
QMAKE_OBJCOPY = /opt/poky/1.7/sysroots/x86_64-pokysdk-linux/usr/bin/arm-poky-linux-gnueabi/arm-poky-linux-gnueabi-objcopy
QMAKE_NM = /opt/poky/1.7/sysroots/x86_64-pokysdk-linux/usr/bin/arm-poky-linux-gnueabi/arm-poky-linux-gnueabi-nm -P
QMAKE_INCDIR = /opt/poky/1.7/sysroots/cortexa9hf-vfp-neon-poky-linux-gnueabi/usr/include
QMAKE_INCDIR += /opt/poky/1.7/sysroots/cortexa9hf-vfp-neon-poky-linux-gnueabi/usr/include/dbus-1.0
QMAKE_INCDIR += /home/vmuser/rootfs/usr/lib/dbus-1.0/include
#QMAKE_LIBDIR = /home/vmuser/rootfs/usr/lib/*.so
QMAKE_LIBDIR = /home/vmuser/rootfs/lib
QMAKE_LIBDIR += /home/vmuser/rootfs/usr/lib
#QMAKE_LIBDIR += /home/vmuser/rootfs/usr/lib
QMAKE_INCDIR_OPENGL_ES2 = /opt/poky/1.7/sysroots/cortexa9hf-vfp-neon-poky-linux-gnueabi/usr/include
QMAKE_LIBDIR_OPENGL_ES2 = /home/vmuser/rootfs/usr/lib
QMAKE_INCDIR_EGL = /opt/poky/1.7/sysroots/cortexa9hf-vfp-neon-poky-linux-gnueabi/usr/include
QMAKE_LIBDIR_EGL = /home/vmuser/rootfs/usr/lib
QMAKE_LIBS_OPENGL_ES1 += -lGLESv1_CM -lEGL -lGAL
QMAKE_LIBS_OPENGL_ES1CL += -lGLES_CL -lEGL -lGAL
QMAKE_LIBS_EGL += -lEGL -lGAL
QMAKE_LIBS_OPENGL_ES2 += -lGLESv2 -lEGL -lGAL
QMAKE_LIBS_OPENVG += -lOpenVG -lEGL -lGAL
QMAKE_LIBS += -ljpeg -ldbus-1 -lrt -lpthread #編譯選項
#DISTRO_OPTS += hard-float #浮點運算使用軟件不使用硬件
# Preferred eglfs backend
EGLFS_DEVICE_INTEGRATION = eglfs_viv
# /opt/rootfs/爲解壓固件 rootfs.tar.gz 所得目錄
#/opt/poky/1.7/sysroots/ 爲安裝交叉工具鏈所得目錄
load(qt_config)
在 qt 源碼頂層目錄中新建配置腳本build.sh，將相應內容填入，其中prefix爲編譯完成後的安裝路徑，xplatform後面帶的參數爲mkspec所在位置：
#########################################################################
# File Name: build.sh
# Author: hegaozhi
# mail: [email protected]
# 以下爲腳本內容
#########################################################################
#!/bin/bash
export PATH=$PATH:/opt/poky/1.7/sysroots/x86_64-pokysdk-linux/usr/bin/arm-poky-linux-gnueabi:/opt/poky/1.7/sysroots/x86_64-pokysdk-linux/usr/bin
export C_INCLUDE_PATH=XXXX:$C_INCLUDE_PATH
#export CPLUS_INCLUDE_PATH=/opt/poky/1.7/sysroots/cortexa9hf-vfp-neon-poky-linux-gnueabi/usr/include:$CPLUS_INCLUDE_PATH
#export LD_LIBRARY_PATH=/opt/poky/1.7/sysroots/cortexa9hf-vfp-neon-poky-linux-gnueabi/usr/include:$LD_LIBRARY_PATH
#export LIBRARY_PATH=/opt/rootfs/lib:/opt/rootfs/usr/lib:$LIBRARY_PATH
#export LD_LIBRARY_PATH=/opt/rootfs/lib:/opt/rootfs/usr/lib:$LD_LIBRARY_PATH
./configure -release \
-xplatform linux-arm-gnueabi-g++ \
-opengl es2 \
-no-dbus \
-no-use-gold-linker \
-prefix /opt/qt5.9.1-arm-release \
-opensource -confirm-license -make libs \
-nomake tools -nomake examples -nomake tests \
-skip qt3d -skip qtandroidextras -skip qtcanvas3d \
-skip qtconnectivity -skip qtdatavis3d -skip qtdoc \
-skip qtgamepad -skip qtimageformats -skip qtlocation \
-skip qtmacextras -skip qtmultimedia -skip qtnetworkauth -skip qtpurchasing -skip qtsensors \
-skip qtserialbus -skip qtspeech -skip qtsvg -skip qttools -skip qtwebchannel \
-skip qtwebengine -skip qtwebsockets -skip qtwebview -skip qtwinextras \
-skip qtx11extras -no-feature-iconv -no-feature-gestures -no-qml-debug \
-I/opt/poky/1.7/sysroots/cortexa9hf-vfp-neon-poky-linux-gnueabi/usr/include \
-I/opt/tslib-1.21-new /include \
-L/opt/tslib-1.21-new /lib \
-L/opt/rootfs/usr/lib \
-L/opt/rootfs/lib
完成以上設置後在 qt 源碼頂層目錄中執行以下命令
/opt/qt5.9.1-src# ./build.sh
/opt/qt5.9.1-src# make-j4
/opt/qt5.9.1-src# make install -j4
執行以上三個命令後，將完成源碼的編譯和安裝的工作，安裝在/opt/qt5.9.1-arm-release目錄下
在Ubuntu中的QtCreator配置交叉編譯器
第一步：打開Tools->Options->Build&Run下的Compilers界面，如下圖所示：
點擊界面中Add->Linux ICC->C++
第二步：打開Tools->Options->Build&Run下的Qt Versions界面，如下圖所示：
點擊界面中Add選擇qmake所在的路徑;
第三步：打開Tools->Options->Build&Run下的Kits界面，如下圖所示：
點擊界面中Add，填寫相關信息如下圖所示
完成以上三步的QtCreator配置後，就可以對Qt應用程序交叉編譯。
在嵌入式linux中部署qt5.9.1並配置運行腳本
1、由於編譯安裝後的目錄下沒有帶字庫，在qt5.9.1-arm-release/lib/下新建fonts目錄用於存放字庫
把Ubuntu下的/opt/qt5.9.1-arm-release目錄全部拷貝到開發板的/opt目錄下
把Ubuntu下的/opt/tslib-1.21-new目錄全部拷貝到開發板的/usr/local目錄下
2、開發板中的 QT 運行環境變量，在/etc/profile 文件中添加如下內容
#Qt
export QT_ROOT=/opt/qt5.9.1-arm-release
export PATH=$QTDIR/bin:$PATH
export LD_LIBRARY_PATH=/lib:/usr/lib:/usr/local/lib:$QT_ROOT/lib
export QT_QPA_PLATFORM_PLUGIN_PATH=$QT_ROOT/plugins
export QT_QPA_FONTDIR=$QT_ROOT/lib/fonts
export QML2_IMPORT_PATH=$QT_ROOT/qml
export QT_EGLFS_IMX6_NO_FB_MULTI_BUFFER=2
export QT_QPA_GENERIC_PLUGINS="tslib:/dev/input/touchscreen0"
export QT_QPA_EGLFS_PHYSICAL_WIDTH=245
export QT_QPA_EGLFS_PHYSICAL_HEIGHT=184
export QT_QPA_FB_TSLIB=1
export QT_QPA_EGLFS_TSLIB=1
export QT_QPA_PLATFORM=eglfs #重要實現界面旋轉顯示
export QT_QPA_EGLFS_ROTATION=90 #重要 實現界面旋轉90度顯示
#tslib
export TSLIB_ROOT=/usr/local/tslib-1.21-new
export PATH=$TSLIB_ROOT/bin:$PATH
export TSLIB_TSDEVICE=/dev/input/touchscreen0
#export TSLIB_TSDEVICE=/dev/input/event1
export TSLIB_CALIBFILE=/etc/pointercal
export POINTERCAL_FILE=/etc/pointercal
export TSLIB_CONFFILE=$TSLIB_ROOT/etc/ts.conf
export LD_LIBRARY_PATH=$LD_LIBRARY_PATH:$TSLIB_ROOT/lib
export TSLIB_PLUGINDIR=/usr/local/tslib-1.21-new/lib/ts
export TSLIB_FBDEVICE=/dev/fb0
export LD_LIBRARY_PATH=$LD_LIBRARY_PATH:$TSLIB_ROOT/lib
3、若是界面旋轉90度顯示後，觸摸同樣需旋轉90度，在開發板中的/usr/local/tslib-1.21-new/bin下執行
/usr/local/tslib-1.21-new/bin# ./ts_calibrate --help
可看到如下信息：
-r --rotate
<rotate_value> 0 ... no rotation; 0 degree (default)
1 ... clockwise orientation; 90 degrees
2 ... upside down orientation; 180 degrees
3 ... counterclockwise orientation; 270 degrees
因此需重新執行
/usr/local/tslib-1.21-new/bin#./ts_calibrate –r 1
重新校正屏幕即可實現和屏幕同樣的選擇。
遇到的問題
1、在運行./build.sh中出現“cannot find /lib/ld-linux-armhf.so.3”，需要把嵌入式linux文件系統中的rootfs/lib/ld-2.20.so下鏈接到Ubuntu下的/lib/ld-linux-armhf.so.3執行以下命令
/opt# ln-s /opt/rootfs/lib/ld-2.20.so /lib/ld-linux-armhf.so.3
2、在make過程中出現“ collect2:fatal error:cannot find ‘ld’”在build.sh中添加-no-use-gold-linker 配置項即可。
3、在Ubuntu中交叉編譯成功的應用程序放到開發板執行時出現“No such file or directory”；在在build.sh中配置中增加以下兩句配置，鏈接到嵌入式的文件系統中
-L /opt/rootfs/usr/lib \
-L /opt/rootfs/lib
4、編譯Qt5的版本時，選用編譯器的版本很關鍵，可以先查看
/opt/qt5.9.1-src/qtbase/mkspecs/目錄下的qconfig.pri文件下的推薦的gcc版本，如下所示：
QT_GCC_MAJOR_VERSION = 4
QT_GCC_MINOR_VERSION = 9
QT_GCC_PATCH_VERSION = 1
編譯時交叉編譯鏈最好比這個版本高，像Qt5.9.1選擇的gcc版本至少得gcc4.9.1以上。
5、編程時Ubuntu可能會報缺失依賴庫，缺失的庫用apt-get install安裝即可。