Qt5.5.1移植到freescale imx6

一、環境

HOST：ubuntu12.04-LTS

Embedded：freescale imx6 linux-3.0.35

CROSS_COMPILE：freescale提供的gcc-4.6.2-glibc-2.13-linaro-multilib-2011.12/fsl-linaro-toolchain/bin/arm-fsl-linux-gnueabi-

 

二、下載源碼

http://mirrors.ustc.edu.cn/qtproject/archive/qt/5.5/5.5.1/single/qt-everywhere-opensource-src-5.5.1.tar.gz

 

三、解壓

unzip qt-everywhere-opensource-src-5.5.1.tar.gz

cd qt-everywhere-opensource-src-5.5.1

 

四、指定arm架構、交叉編譯器、包含的文件系統頭文件、部分編譯參數

vi qtbase/mkspecs/devices/linux-imx6-g++/qmake.conf

以下為全部內容，其他平台qtbase/mkspecs/devices/下要是沒有單獨提供，可以使用qtbase/mkspecs/linux-arm-gnueabi-g++/qmake.conf，需根據自己平台做相應修改。

 

#
# qmake configuration for the Freescale iMX6 boards (single, dual and quad)
#
#export CROSS_COMPILE=/opt/freescale/usr/local/gcc-4.6.2-glibc-2.13-linaro-multilib-2011.12/fsl-linaro-toolchain/bin/arm-fsl-linux-gnueabi-
MAKEFILE_GENERATOR      = UNIX   #宏定義，代碼中有判斷
CONFIG                 += incremental
QMAKE_INCREMENTAL_STYLE = sublib

QT_QPA_DEFAULT_PLATFORM = linuxfb #eglfs    #顯示使用linuxfb或eglfs
IMX6_CFLAGS             = -march=armv7-a -mfpu=neon -DLINUX=1 -DEGL_API_FB=1    #處理器架構
IMX6_CFLAGS_RELEASE     = -O2 $$IMX6_CFLAGS
QMAKE_CFLAGS_RELEASE   += $$IMX6_CFLAGS_RELEASE
QMAKE_CXXFLAGS_RELEASE += $$IMX6_CFLAGS_RELEASE
QMAKE_CFLAGS           += $$IMX6_CFLAGS
QMAKE_CXXFLAGS         += $$IMX6_CFLAGS

include(../common/linux_device_pre.conf)
include(../../common/linux.conf)
include(../../common/gcc-base-unix.conf)
include(../../common/g++-unix.conf)

# modifications to g++.conf
QMAKE_CC                = /opt/freescale/usr/local/gcc-4.6.2-glibc-2.13-linaro-multilib-2011.12/fsl-linaro-toolchain/bin/arm-fsl-linux-gnueabi-gcc
QMAKE_CXX               = /opt/freescale/usr/local/gcc-4.6.2-glibc-2.13-linaro-multilib-2011.12/fsl-linaro-toolchain/bin/arm-fsl-linux-gnueabi-g++
QMAKE_LINK              = /opt/freescale/usr/local/gcc-4.6.2-glibc-2.13-linaro-multilib-2011.12/fsl-linaro-toolchain/bin/arm-fsl-linux-gnueabi-g++
QMAKE_LINK_SHLIB        = /opt/freescale/usr/local/gcc-4.6.2-glibc-2.13-linaro-multilib-2011.12/fsl-linaro-toolchain/bin/arm-fsl-linux-gnueabi-g++

# modifications to linux.conf
QMAKE_AR                = /opt/freescale/usr/local/gcc-4.6.2-glibc-2.13-linaro-multilib-2011.12/fsl-linaro-toolchain/bin/arm-fsl-linux-gnueabi-ar cqs
QMAKE_OBJCOPY           = /opt/freescale/usr/local/gcc-4.6.2-glibc-2.13-linaro-multilib-2011.12/fsl-linaro-toolchain/bin/arm-fsl-linux-gnueabi-objcopy
QMAKE_STRIP             = /opt/freescale/usr/local/gcc-4.6.2-glibc-2.13-linaro-multilib-2011.12/fsl-linaro-toolchain/bin/arm-fsl-linux-gnueabi-strip

QMAKE_INCDIR            += /imx_disk/gq/qt/rootfs/usr/include
QMAKE_LIBDIR            += /imx_disk/gq/qt/rootfs/usr/lib

QMAKE_INCDIR            += /imx_disk/gq/qt/rootfs/usr/include/dbus-1.0
QMAKE_INCDIR            += /imx_disk/gq/qt/rootfs/usr/lib/dbus-1.0/include
QMAKE_LIBDIR            += /imx_disk/gq/qt/rootfs/usr/lib

QMAKE_INCDIR_OPENGL_ES2 = /imx_disk/gq/qt/rootfs/usr/include
QMAKE_LIBDIR_OPENGL_ES2 = /imx_disk/gq/qt/rootfs/usr/lib

QMAKE_INCDIR_EGL = /imx_disk/gq/qt/rootfs/usr/include
QMAKE_LIBDIR_EGL = /imx_disk/gq/qt/rootfs/usr/lib

QMAKE_LIBS_OPENGL_ES1       += -lGLESv1_CM -lEGL -lGAL
QMAKE_LIBS_OPENGL_ES1CL     += -lGLES_CL -lEGL -lGAL
QMAKE_LIBS_EGL         += -lEGL
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

include(../common/linux_arm_device_post.conf)

load(qt_config)

五、根據自己實際需求配置QT

 

 

#!/bin/sh
./configure \
        -v -opensource -confirm-license -no-pch -no-xcb -no-openssl -no-opengl -opengl es2 \
        -dbus \
        -qt-zlib \
        -no-sse2 \
        -no-iconv \
        -tslib \
        -release \
        -make libs -device imx6 \
        -device-option CROSS_COMPILE=/opt/freescale/usr/local/gcc-4.6.2-glibc-2.13-linaro-multilib-2011.12/fsl-linaro-toolchain/bin/arm-fsl-linux-gnueabi- \
        -sysroot /imx_disk/gq/qt/ -no-gcc-sysroot \
        -prefix /qt5.5.1 \
        -make examples -nomake tools -nomake tests

配置結果如下：

 

 

Build options:
  Configuration .......... accessibility alsa audio-backend c++11 clock-gettime clock-monotonic compile_examples concurrent cross_compile dbus eglfs_viv enable_new_dtags evdev eventfd freetype full-config getaddrinfo getifaddrs harfbuzz inotify ipv6ifname large-config largefile linuxfb medium-config minimal-config mremap neon nis no-pkg-config opengl opengles2 openvg pcre png posix_fallocate qpa qpa reduce_exports release rpath shared small-config system-jpeg tslib zlib
  Build parts ............  libs examples
  Mode ................... release
  Using sanitizer(s)...... none
  Using C++11 ............ yes
  Using gold linker....... no
  Using new DTAGS ........ yes
  Using PCH .............. no
  Target compiler supports:
    Neon ................. yes

Qt modules and options:
  Qt D-Bus ............... yes (loading dbus-1 at runtime)
  Qt Concurrent .......... yes
  Qt GUI ................. yes
  Qt Widgets ............. yes
  Large File ............. yes
  QML debugging .......... yes
  Use system proxies ..... no

Support enabled for:
  Accessibility .......... yes
  ALSA ................... yes
  CUPS ................... no
  Evdev .................. yes
  FontConfig ............. no
  FreeType ............... yes (bundled copy)
  Glib ................... no
  GStreamer .............. no
  GTK theme .............. no
  HarfBuzz ............... yes (bundled copy)
  Iconv .................. no
  ICU .................... no
  Image formats:
    GIF .................. yes (plugin, using bundled copy)
    JPEG ................. yes (plugin, using system library)
    PNG .................. yes (in QtGui, using bundled copy)
  journald ............... no
  libinput................ no
  mtdev .................. no
  Networking:
    getaddrinfo .......... yes
    getifaddrs ........... yes
    IPv6 ifname .......... yes
    libproxy.............. no
    OpenSSL .............. no
  NIS .................... yes
  OpenGL / OpenVG:
    EGL .................. no
    OpenGL ............... yes (OpenGL ES 2.0+)
    OpenVG ............... yes-auto
  PCRE ................... yes (bundled copy)
  pkg-config ............. no
  PulseAudio ............. no
  QPA backends:
    DirectFB ............. no
    EGLFS ................ no
      EGLFS i.MX6....... . yes
      EGLFS KMS .......... no
      EGLFS Mali ......... no
      EGLFS Raspberry Pi . no
      EGLFS X11 .......... no
    LinuxFB .............. yes
    XCB .................. no
  Session management ..... yes
  SQL drivers:
    DB2 .................. no
    InterBase ............ no
    MySQL ................ no
    OCI .................. no
    ODBC ................. no
    PostgreSQL ........... no
    SQLite 2 ............. no
    SQLite ............... yes (plugin, using bundled copy)
    TDS .................. no
  tslib .................. yes
  udev ................... no
  xkbcommon-x11........... no
  xkbcommon-evdev......... no
  zlib ................... yes (bundled copy)

六、編譯安裝

 

1、make

2、make install

 

七、copy到開發板設置環境變量

1、將qt5.5.1打包拷貝到文件系統/usr/local/下，其中包含了qt5的examples，可以刪除。

2、添加QT系統環境變量

vi /etc/profile添加
#for QT
export QT_ROOT=/usr/local/qt5.5.1
export LD_LIBRARY_PATH=$LD_LIBRARY_PATH:/lib:/usr/lib:$QT_ROOT/lib
export QT_QPA_PLATFORM_PLUGIN_PATH=$QT_ROOT/plugins
export QT_QPA_PLATFORM=linuxfb:tty=/dev/fb0
export QT_QPA_FONTDIR=$QT_ROOT/lib/fonts
export QT_QPA_GENERIC_PLUGINS=evdevtouch:/dev/input/event0
export PATH=/bin:/sbin:/usr/bin/:/usr/sbin

export QML2_IMPORT_PATH=$QT_ROOT/qml

#export QT_QPA_GENERIC_PLUGINS=tslib:$TSLIB_TSDEVICE//如果觸摸使用TSlib支持則修改為該句。

#export QT_QPA_EGLFS_FB=/dev/fb1

注：QT觸摸屏支持可以不使用tslib。

3、tslib移植及支持請看http://blog.csdn.net/xishuang_gongzi/article/details/49422879

 

八、運行例子

注：圖懶得截了，從別人處拷貝的。

examples/touch/pinchzoom/pinchzoom

examples/svg/embedded/fluidlauncher/fluidlauncher

九、編譯及運行問題記錄

1、編譯錯誤：opengles2.cpp:37:25: fatal error: GLES2/gl2.h: No such file or directory

vi qtbase/mkspecs/devices/linux-imx6-g++/qmake.conf

解決：

QMAKE_INCDIR_OPENGL_ES2 = /imx_disk/gq/qt/rootfs/usr/include
QMAKE_LIBDIR_OPENGL_ES2 = /imx_disk/gq/qt/rootfs/usr/lib

2、編譯錯誤：In function `png_reset_crc': png.c: undefined reference to `z_crc32'等，qtbase/src/3rdparty/libpng編譯時出現大量z_開頭的zlib庫函數找不到定義。

解決：

./configure 后添加編譯-qt-zlib
qt為了防止自己的zlib庫與系統的zlib庫沖突。Since Qt Core must export these symbols, define Z_PREFIX to avoid clashes system zlib */

3、編譯錯誤：

運行時出現錯誤提示

QIconvCodec::convertToUnicode: using Latin-1 for conversion,iconv_open failed
QIconvCodec::convertFromUnicode: using Latin-1 for conversion,iconv_open failed
解決：

./configure 后添加編譯 -no-iconv

4、編譯錯誤qtwebkit/lib/libQt5WebKit.so: undefined reference to `jpeg_input_complete'

解決：

./configure 后添加編譯-qt-libjpeg

 

5、編譯錯誤：arm-fsl-linux-gnueabi/bin/ld: warning: libjpeg.so.62, needed by /.....qtwebkit/lib/libQt5WebKit.so, not found (try using -rpath or -rpath-link)

解決：
vi qtbase/mkspecs/devices/linux-imx6-g++/qmake.conf添加
QMAKE_LIBS             += -ljpeg
http://blog.sina.com.cn/s/blog_616fb0880100xrjj.html

 

6、編譯錯誤：

qibusplatforminputcontext.cpp: In member function 'virtual void QIBusPlatformInputContext::reset()':
qibusplatforminputcontext.cpp:117:17: error: 'class QIBusInputContextProxy' has no member named 'Reset'
qibusplatforminputcontext.cpp: In member function 'virtual void QIBusPlatformInputContext::commit()':
qibusplatforminputcontext.cpp:140:17: error: 'class QIBusInputContextProxy' has no member named 'Reset'

解決：

qt編譯./configuer 后加上-dbus 

 

7、配置錯誤：

The Qt D-Bus module cannot be enabled because libdbus-1 version 1.2 was not found.
解決：

參考:找到-prefix目錄下的lib文件下的pkgconfig文件夾，打開dbus-1.pc
vi qtbase/mkspecs/devices/linux-imx6-g++/qmake.conf

QMAKE_INCDIR            += /imx_disk/gq/qt/rootfs/usr/include/dbus-1.0
QMAKE_INCDIR            += /imx_disk/gq/qt/rootfs/usr/lib/dbus-1.0/include
QMAKE_LIBDIR            += /imx_disk/gq/qt/rootfs/usr/lib

若rootfs中沒有dbus庫，則需要移植dbus1.2版本copy到文件系統，添加參數如下

QMAKE_INCDIR            += /imx_disk/gq/qt/dbus/dbusinstall_1.2.30/include/dbus-1.0
QMAKE_INCDIR            += /imx_disk/gq/qt/dbus/dbusinstall_1.2.30/lib/dbus-1.0/include
QMAKE_LIBDIR            += /imx_disk/gq/qt/dbus/dbusinstall_1.2.30/lib
其中dbusinstall_1.2.30是交叉編譯dbus1.2后的安裝目錄。
編譯dbus前需要先交叉編譯dbus的依賴庫expat-2.1.0

 

8、運行錯誤./examples/touch/pinchzoom/pinchzoom 
Cannot find libdbus-1 in your system to resolve symbol 'dbus_get_local_machine_id'.
Aborted
qt編譯./configuer 后加上-dbus

 

9、編譯錯誤：

/imx_disk/gq/qt/dbus/dbusinstall_1.2.30/lib/libdbus-1.a(dbus-sysdeps-pthread.o): In function `_dbus_pthread_condvar_wait_timeout':
/imx_disk/gq/qt/dbus/dbus-1.2.30/dbus/dbus-sysdeps-pthread.c:273: undefined reference to `clock_gettime'
/imx_disk/gq/qt/dbus/dbusinstall_1.2.30/lib/libdbus-1.a(dbus-sysdeps-pthread.o): In function `_dbus_pthread_condvar_new':
/imx_disk/gq/qt/dbus/dbus-1.2.30/dbus/dbus-sysdeps-pthread.c:206: undefined reference to `pthread_condattr_setclock'
/imx_disk/gq/qt/dbus/dbusinstall_1.2.30/lib/libdbus-1.a(dbus-sysdeps-pthread.o): In function `check_monotonic_clock':
/imx_disk/gq/qt/dbus/dbus-1.2.30/dbus/dbus-sysdeps-pthread.c:353: undefined reference to `clock_getres'
/imx_disk/gq/qt/dbus/dbusinstall_1.2.30/lib/libdbus-1.a(dbus-sysdeps-unix.o): In function `_dbus_get_current_time':
/imx_disk/gq/qt/dbus/dbus-1.2.30/dbus/dbus-sysdeps-unix.c:2071: undefined reference to `clock_gettime'

解決：
vi qtbase/mkspecs/devices/linux-imx6-g++/qmake.conf
QMAKE_LIBS             += -lrt

 

10、編譯錯誤：

qsgvivantevideonode.cpp: In static member function 'static const QMap<QVideoFrame::PixelFormat, unsigned int>& QSGVivanteVideoNode::getVid   eoFormat2GLFormatMap()':
qsgvivantevideonode.cpp:64:77: error: 'GL_VIV_I420' was not declared in this scope

解決：方式兩種，選一種，我們選第二種
①、
vi ./qtmultimedia/src/plugins/videonode/imx6/qsgvivantevideonode.cpp
const QMap<QVideoFrame::PixelFormat, GLenum>& QSGVivanteVideoNode::getVideoFormat2GLFormatMap()
{
    if (static_VideoFormat2GLFormatMap.isEmpty()) {
//        static_VideoFormat2GLFormatMap.insert(QVideoFrame::Format_YUV420P,  GL_VIV_I420);
//this video format needs to be commented because it will have support with kernel 3.10 but not with actual one
        static_VideoFormat2GLFormatMap.insert(QVideoFrame::Format_YV12,     GL_VIV_YV12);
        static_VideoFormat2GLFormatMap.insert(QVideoFrame::Format_NV12,     GL_VIV_NV12);
        static_VideoFormat2GLFormatMap.insert(QVideoFrame::Format_NV21,     GL_VIV_NV21);
        static_VideoFormat2GLFormatMap.insert(QVideoFrame::Format_UYVY,     GL_VIV_UYVY);
        static_VideoFormat2GLFormatMap.insert(QVideoFrame::Format_YUYV,     GL_VIV_YUY2);
        static_VideoFormat2GLFormatMap.insert(QVideoFrame::Format_RGB32,    GL_BGRA_EXT);
        static_VideoFormat2GLFormatMap.insert(QVideoFrame::Format_ARGB32,   GL_BGRA_EXT);
        static_VideoFormat2GLFormatMap.insert(QVideoFrame::Format_BGR32,    GL_RGBA);
        static_VideoFormat2GLFormatMap.insert(QVideoFrame::Format_BGRA32,   GL_RGBA);
        static_VideoFormat2GLFormatMap.insert(QVideoFrame::Format_RGB565,   GL_RGB565);
    }


    return static_VideoFormat2GLFormatMap;
}


②
vi rootfs/usr/include/GLES2/gl2ext.h
/* GL_VIV_direct_texture */
#ifndef GL_VIV_direct_texture
#define GL_VIV_YV12                     0x8FC0
#define GL_VIV_NV12                     0x8FC1
#define GL_VIV_YUY2                     0x8FC2
#define GL_VIV_UYVY                     0x8FC3
#define GL_VIV_NV21                     0x8FC4
#define GL_VIV_I420                     0x8FC5 //新增
#endif
值來自於這個patch    https://lists.yoctoproject.org/pipermail/meta-freescale/2014-June/008709.html

11、編譯錯誤：

ssl/qsslcontext_openssl.cpp:444:52: error: 'SSL_SESSION' has no member named 'tlsext_tick_lifetime_hint'
解決：

configure編譯時添加-no-openssl，即不編譯openssl

12、運行錯誤：

./examples/quick/demos/samegame/samegame 
qrc:///demos/samegame/samegame.qml:41:1: module "QtQuick" is not installed
qrc:///demos/samegame/samegame.qml:42:1: module "QtQuick.Particles" is not installed
qrc:///demos/samegame/samegame.qml:41:1: module "QtQuick" is not installed
qrc:///demos/samegame/samegame.qml:42:1: module "QtQuick.Particles" is not installed

解決：

在環境里添加：export QML2_IMPORT_PATH=$QT_ROOT/qml，就能解決qrc:///main.qml:1 module "QtQuick" is not installed這樣類似的問題，

$QT_ROOT/qml是你編譯安裝后會有個文件夾的。

13、運行錯誤：./examples/quick/demos/samegame/samegame 

This plugin does not support createPlatformOpenGLContext!
Failed to create OpenGL context for format QSurfaceFormat(version 2.0, options QFlags(), depthBufferSize 24, redBufferSize -1, greenBufferSize -1, blueBufferSize -1, alphaBufferSize -1, stencilBufferSize 8, samples -1, swapBehavior 2, swapInterval 1, profile  0) 
Aborted
回答：

The problem is likely that you are using qt quick 2, which requires OpenGL. OpenGL does not support the frame buffer used for the small display.

14、編譯錯誤：

../WTF/wtf/unicode/wchar/UnicodeWchar.h: In function 'bool WTF::Unicode::isAlphanumeric(UChar)':

../WTF/wtf/unicode/wchar/UnicodeWchar.h:136:58: error: 'iswalnum' was not declared in this scope
../WTF/wtf/unicode/wchar/UnicodeWchar.h: In function 'bool WTF::Unicode::isDigit(UChar)':
../WTF/wtf/unicode/wchar/UnicodeWchar.h:137:51: error: 'iswdigit' was not declared in this scope
../WTF/wtf/unicode/wchar/UnicodeWchar.h: In function 'bool WTF::Unicode::isLetter(UChar)':

解決：
vi ./qtwebkit/Source/WTF/wtf/unicode/wchar/UnicodeWchar.h
#ifndef Android
/*add by gq start*/
#include <wctype.h>
typedef unsigned short int UChar;
/*add by gq end*/
//# include <wchar.h>
// typedef wchar_t UChar;
#else
 typedef unsigned short int UChar;
#endif

15、編譯錯誤：cc1plus: error: unrecognized command line option '-fuse-ld=gold'
解決：

這是Qt的一個bug：https://bugs.webkit.org/show_bug.cgi?id=89312
在裝有gold linker的系統里，編譯腳本會加入-fuse-ld=gold選項，但這個選項gcc是不支持的。解決辦法是移除該選項，
vi qtbase/configure
CFG_USE_GOLD_LINKER=no

16、編譯錯誤3、arm-fsl-linux-gnueabi/bin/ld: error: arch.o uses VFP register arguments, arch does not

解決：

vi./qtbase/mkspecs/devices/linux-imx6-g++/qmake.conf
#DISTRO_OPTS += hard-float
屏蔽掉該句后
g++編譯器就被設置成-mfloat-abi=softfp，不使用hard，即浮點運算使用軟件不使用硬件。

17、運行錯誤：
root@freescale /opt$ ./examples/svg/embedded/fluidlauncher/fluidlauncher 
process 2622: D-Bus library appears to be incorrectly set up; failed to read machine uuid: Failed to open "/usr/var/lib/dbus/machine-id": No such file or directory
See the manual page for dbus-uuidgen to correct this issue.
  D-Bus not built with -rdynamic so unable to print a backtrace
Aborted

解決：
dbus-uuidgen > /usr/var/lib/dbus/machine-id

十、主要參考：

https://community.freescale.com/docs/DOC-94066

http://www.myir-tech.com/bbs/thread-7174-1-1.html