文章首发:http://user.qzone.qq.com/276546441/gift?target=send_5th&senduin=58720861
环境:ubuntu 8.04
硬盘空间:40G
QT代码:4.6.2 (下载地址:http://qt.nokia.com/downloads)
步骤:
A. Embedded版
1、修改路径为[qt-install-dir]/mkspecs/qws/linux-arm-g++/qmake.conf的文件:
#
# qmake configuration for building with arm-linux-g++
#
include(../../common/g++.conf)
include(../../common/linux.conf)
include(../../common/qws.conf)
# 修改g++里的宏定义
#设置使用ARM高级特性的编译标志
QMAKE_CFLAGS_RELEASE = -O3 -march=armv7-a
-mtune=cortex-a8
-mfpu=neon
-mfloat-abi=softfp
QMAKE_CXXFLAGS_RELEASE = -O3 -march=armv7-a
-mtune=cortex-a8 -mfpu=neon -mfloat-abi=softfp
# 设置交叉编译工具链
# 本项目中使用的交叉编译工具下载地址为
# http://www.codesourcery.com/sgpp/lite/arm
#
QMAKE_CC = arm-none-linux-gnueabi-gcc
QMAKE_CXX = arm-none-linux-gnueabi-g++
QMAKE_LINK = arm-none-linux-gnueabi-g++
QMAKE_LINK_SHLIB = arm-none-linux-gnueabi-g++
# 修改linux.conf中的宏定义
QMAKE_AR = arm-none-linux-gnueabi-ar cqs
QMAKE_OBJCOPY = arm-none-linux-gnueabi-objcopy
QMAKE_STRIP = arm-none-linux-gnueabi-strip
load(qt_config)
#
# qmake configuration for building with arm-linux-g++
#
include(../../common/g++.conf)
include(../../common/linux.conf)
include(../../common/qws.conf)
# 修改g++里的宏定义
#设置使用ARM高级特性的编译标志
QMAKE_CFLAGS_RELEASE = -O3 -march=armv7-a
-mtune=cortex-a8
-mfpu=neon
-mfloat-abi=softfp
QMAKE_CXXFLAGS_RELEASE = -O3 -march=armv7-a
-mtune=cortex-a8 -mfpu=neon -mfloat-abi=softfp
# 设置交叉编译工具链
# 本项目中使用的交叉编译工具下载地址为
# http://www.codesourcery.com/sgpp/lite/arm
#
QMAKE_CC = arm-none-linux-gnueabi-gcc
QMAKE_CXX = arm-none-linux-gnueabi-g++
QMAKE_LINK = arm-none-linux-gnueabi-g++
QMAKE_LINK_SHLIB = arm-none-linux-gnueabi-g++
# 修改linux.conf中的宏定义
QMAKE_AR = arm-none-linux-gnueabi-ar cqs
QMAKE_OBJCOPY = arm-none-linux-gnueabi-objcopy
QMAKE_STRIP = arm-none-linux-gnueabi-strip
load(qt_config)
2、配置QT脚编译选项
控制台进入QT代码根目录,执行./configure -prefix <PATH_TO_NFS> -embedded arm -platform /qws/linux-x86-g++
-xplatform /qws/linux-omap3-g++ -depths 16,24,32 -no-mmx
-no-3dnow -no-sse -no-sse2 -
no-glib -no-cups
-no-largefile -no-accessibility -no-openssl -
no-gtkstyle -qt-mouse-pc -qt-mouse-linuxtp
-qt-mouse-linuxinput -plugin-mouse-linuxtp -plugin-mouse-pc -fast
注:1,这些配置选项为TI的参考配置,自己可以随意增减来测试效果,
2,参数的具体作用可以通过./configure --help来查看
3, <PATH_TO_NFS>是QT被安装的到板子上的全路径,用来保存编译生成的各种文件。
3、排除错误的方法
配置出错时,可以到tmp目录下,进入长得像的配置QT的临时文件夹,找config.log文件,此文件中有出错的详细信息。如果没出错,执行make 与make install,都没有错误,则编译成功,把<PATH_TO_NFS>中的文件同名同目录拷贝到板子上的SD卡中便可以使用QT了。
4、版本说明
Embedded版本的QT,自己实现了X-Server与X-Client,故不能与已有的桌面环境共存,在OpenEmbedded的开源项目中,许多可以使用于X11环境中的工具,在QT的Embedded环境中暂时没发现能使用,要想使用它们只能把QT编译成基ARM体系的X11版本,具体步骤参考B。
B. X11版[2]
1、编译angstrom
我们板子中使用的桌面环境为angstrom, 编译QT X11需要把此桌面环境编译出来,按照[5]提供的步骤进行angstrom的编译,其中MACHINE ?= "beagleboard" bitbake base-image ; bitbake console-image x11-image后增加beagleboard-demo-image,可能直接bitbake beagleboard-demo-image就可以。网速快的话十几个小时应该可以完成编译过程。
2、设置Scratchbox2的环境
先安装Scratchbox2,执行sudo apt-get install help2man texi2html texinfo 然后执行sudo apt-get install Scratchbox2,便可安装成功;安装成功后,修改/usr/bin/sb2-build-libtool中的配置值
- ./configure –prefix=$HOME/.scratchbox2/$TARGET –build=$(uname -m)-unknown-linux-gnu
+ ./configure –host=x86 –prefix=$HOME/.scratchbox2/$TARGET –build=$(uname -m)-unknown-linux-gnu
- ./configure –prefix=$HOME/.scratchbox2/$TARGET –build=$(uname -m)-unknown-linux-gnu
+ ./configure –host=x86 –prefix=$HOME/.scratchbox2/$TARGET –build=$(uname -m)-unknown-linux-gnu
sudo dpkg-reconfigure dash 选择否,修改/bin/sh指向为安全指向,否则sb2-init执行不了。
在 /etc/sysctl.conf中设置vm.mmap_min_addr = 0,设置完成后需要重启,否则sb2-init执行不了。
在~/OE/angstrom-dev/staging/armv7a-angstrom-linux-gnueabi目录中执行sb2-init -c /usr/bin/qemu-arm angstrom-beagle ~/OE/angstrom-dev/cross/armv7a/bin/arm-angstrom-linux-gnueabi-gcc 。最后一个参数为编译器工具链路径,可以使用/opt/codesourcery/arm-none-linux-gnueabi/arm-2007q3/bin/arm-angstrom-linux-gnueabi-gcc(这个是我机已经配置好交叉编译的工具路径)
3、编译QT X11
修改/qws/linux-arm-g++/qmake.conf为
#
# qmake configuration for linux-g++
#
MAKEFILE_GENERATOR = UNIX
TEMPLATE = app
CONFIG += qt warn_on release incremental link_prl
QT += core gui
QMAKE_INCREMENTAL_STYLE = sublib
include(../../common/g++.conf)
include(../../common/linux.conf)
# modifications to g++.conf
QMAKE_CC = sb2 gcc
QMAKE_CXX = sb2 g++
QMAKE_LINK = sb2 g++
QMAKE_LINK_SHLIB = sb2 g++
# modifications to linux.conf
QMAKE_AR = sb2 ar cqs
QMAKE_OBJCOPY = sb2 objcopy
QMAKE_STRIP = sb2 strip
load(qt_config)
#
# qmake configuration for linux-g++
#
MAKEFILE_GENERATOR = UNIX
TEMPLATE = app
CONFIG += qt warn_on release incremental link_prl
QT += core gui
QMAKE_INCREMENTAL_STYLE = sublib
include(../../common/g++.conf)
include(../../common/linux.conf)
# modifications to g++.conf
QMAKE_CC = sb2 gcc
QMAKE_CXX = sb2 g++
QMAKE_LINK = sb2 g++
QMAKE_LINK_SHLIB = sb2 g++
# modifications to linux.conf
QMAKE_AR = sb2 ar cqs
QMAKE_OBJCOPY = sb2 objcopy
QMAKE_STRIP = sb2 strip
load(qt_config)
修改QT根目录下的configure脚本文件,其中行号不正确,具体行号位置以
if [ -n "$PKG_CONFIG" ] && $PKG_CONFIG –exists fontconfig 2>/dev/null; then
QT_CFLAGS_FONTCONFIG=`$PKG_CONFIG –cflags fontconfig 2>/dev/null`
QT_LIBS_FONTCONFIG=`$PKG_CONFIG –libs fontconfig 2>/dev/null`
if [ -n "$PKG_CONFIG" ] && $PKG_CONFIG –exists fontconfig 2>/dev/null; then
QT_CFLAGS_FONTCONFIG=`$PKG_CONFIG –cflags fontconfig 2>/dev/null`
QT_LIBS_FONTCONFIG=`$PKG_CONFIG –libs fontconfig 2>/dev/null`
的位置为准,此处主要用于配置字库的头文件路径。
diff –git a/configure b/configure
index 3f3e55a..54de96b 100755
---a/configure
+++ b/configure
@@ -5115,6 +5115,10 @@ if [ "$PLATFORM_X11" = "yes" ]; then
if [ -n "$PKG_CONFIG" ] && $PKG_CONFIG –exists fontconfig 2>/dev/null; then
QT_CFLAGS_FONTCONFIG=`$PKG_CONFIG –cflags fontconfig 2>/dev/null`
QT_LIBS_FONTCONFIG=`$PKG_CONFIG –libs fontconfig 2>/dev/null`
+ if $PKG_CONFIG –exists freetype2 2>/dev/null; then
+ QT_CFLAGS_FONTCONFIG="$QT_CFLAGS_FONTCONFIG `$PKG_CONFIG –cflags freetype2 2>/dev/null`"
+ QT_LIBS_FONTCONFIG="$QT_LIBS_FONTCONFIG `$PKG_CONFIG –libs freetype2 2>/dev/null`"
+ fi
else
QT_CFLAGS_FONTCONFIG=
QT_LIBS_FONTCONFIG="-lfreetype -lfontconfig"
diff –git a/configure b/configure
index 3f3e55a..54de96b 100755
---a/configure
+++ b/configure
@@ -5115,6 +5115,10 @@ if [ "$PLATFORM_X11" = "yes" ]; then
if [ -n "$PKG_CONFIG" ] && $PKG_CONFIG –exists fontconfig 2>/dev/null; then
QT_CFLAGS_FONTCONFIG=`$PKG_CONFIG –cflags fontconfig 2>/dev/null`
QT_LIBS_FONTCONFIG=`$PKG_CONFIG –libs fontconfig 2>/dev/null`
+ if $PKG_CONFIG –exists freetype2 2>/dev/null; then
+ QT_CFLAGS_FONTCONFIG="$QT_CFLAGS_FONTCONFIG `$PKG_CONFIG –cflags freetype2 2>/dev/null`"
+ QT_LIBS_FONTCONFIG="$QT_LIBS_FONTCONFIG `$PKG_CONFIG –libs freetype2 2>/dev/null`"
+ fi
else
QT_CFLAGS_FONTCONFIG=
QT_LIBS_FONTCONFIG="-lfreetype -lfontconfig"
然后执行 ./configure -prefix <PATH_TO_NFS> -arch arm -xplatform pws/linux-arm-g++ -force-pkg-config 便可以完成配置。最后执行make与make install。执行make时会出现 global/qlibraryinfo.cpp:490: error: expected primary-expression before '/' token的错误,修改出错位置的ELF_INTERPRETER,为"/lib/ld-linux.so.2"(此值可以从Makefile中的-DELF_INTERPRETER=得到)即可。
参考:
1. http://processors.wiki.ti.com/index.php/Building_Qt
2. http://labs.trolltech.com/blogs/2009/11/20/building-qt-to-make-use-of-the-beagle-boards-sgx-gpu/
3. http://labs.trolltech.com/blogs/2010/02/05/qtx11-bring-up-on-tegra2-with-full-opengl-es-2-support
4. http://labs.trolltech.com/blogs/2009/09/10/cross-compiling-qtx11/
5. http://www.angstrom-distribution.org/building-angstrom
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