原文地址：http://www.kuche361.com/ht/view/id-39165

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這是個臭名昭著的問題，試了很多方法，也沒有解決。

7月15日~16日加起來搞了一天，把4.6.3重新編譯了兩次，還是沒有解決，而且還證明用mini6410提供的4.5.1版本的gcc，能夠編譯成功，但是QT4.6.3下載到開發板運行Demo程序，提示錯誤，不兼容，郁悶啊，因此一定要用4.4.3版本的gcc。

其中，網上有一篇英文寫的很好的文章，編譯前修改了QT源碼目錄內兩個.conf文件，尤其是后面紅字部分特別提到了avoid some illegal instruction，以為可以類似解決：

Qt 4.6.2 installation procedure for FriendlyARM mini 2440 Linux

2011年03月21日 星期一 18:51

Qt 4.6.2 installation procedure for FriendlyARM mini 2440 Linux

Submitted by paolo on Sun 07/25/2010 - 03:44

This tutorial will provide a simple list of steps necessary to compile and install Qt 4.6.2 on Mini 2440 friendly ARM board. Italian speaking people can read this tutorial on Qt-Italia community website.

The board is equipped with the default GNU/Linux operating system (kernel 2.6.29)

This guide has been tested on following GNU/Linux host distributions:

CentOS 5.4

Fedora 12

Ubuntu 9.10

Some problems were found on following host distributions:

Ubuntu 9.04

OpenSUSE 11.2

First of all you have to download the GCC toolchain provided by the supplier:

Now untar the tgz file:

tar -xzf arm-linux-gcc-4.3.2.tgz

and then copy the directory tree under

/usr/local/

Remember to export this path on your shell

export PATH=/usr/local/arm/4.3.2/bin:$PATH

Now we can download Qt

and untar and unzip the file on a local directory (example: /home/user)

Now before running the configure tool you have to modify the qmake.conf file to inform Qt about your toolchain as described here:

File: mkspecs/qws/linux-arm-g++/qmake.conf

Now change following lines:

#QMAKE_CC = arm-linux-gcc

#QMAKE_CXX = arm-linux-g++

#QMAKE_LINK = arm-linux-g++

#QMAKE_LINK_SHLIB = arm-linux-g++

with:

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++

Also change the following lines:

#QMAKE_AR = arm-linux-ar cqs

#QMAKE_OBJCOPY = arm-linux-objcopy

#QMAKE_STRIP = arm-linux-strip

with:

QMAKE_AR = arm-none-linux-gnueabi-ar cqs

QMAKE_OBJCOPY = arm-none-linux-gnueabi-objcopy

QMAKE_RANLIB = arm-none-linux-gnueabi–ranlib

In order toavoid some illegal instruction on your ARM compiled application binaries you have to deactivate compiler optimization:

File: /mkspecs/common/g++.conf

Change this line

QMAKE_CFLAGS_RELEASE += -O2

With:

QMAKE_CFLAGS_RELEASE += -O0

Now we are ready; in the Qt root subdirectory we run this command:

./configure -embedded arm -xplatform qws/linux-arm-g++ -prefix \

/usr/local/Qt -qt-mouse-tslib -little-endian -no-webkit -no-qt3support \

-no-cups -no-largefile -optimized-qmake -no-openssl -nomake tools

And then we can run the command

make

If everything is ok now we can do

make install

In order to run our ARM compiled applications we have to set following environment variables on the mini2440 board:

export TSLIB_TSEVENTTYPE=INPUT

export TSLIB_CONSOLEDEVICE=none

export TSLIB_FBDEVICE=/dev/fb0

export TSLIB_TSDEVICE=/usr/input/ts

export TSLIB_CALIBFILE=/usr/etc/pointercal

export TSLIB_CONFFILE=/usr/etc/ts.conf

export TSLIB_PLUGINDIR=/usr/lib/ts

export LD_LIBRARY_PATH=/usr/local/Qt/lib

export QTDIR=/usr/local/Qt

export QWS_MOUSE_PROTO=tslib:/usr/input/ts

export QWS_DISPLAY=LinuxFB:mmWidth=310:mmHeight=190

The Qt library binary (and fonts subdir) shall be placed on a user defined directory of the mini 2440m board and then it is necessary to set LD_LIBRARY_PATH to this directory.

Qt binary application must be run with –qws command line argument to inform Qt that we are working on a Linux embedded system.

Using the described procedure I was able to compile Qt qwt library and embedded widgets example.

YouTube Video demo: Embedded Widgets example

YouTube Video demo: Qwt examples

If you have questions you can leave a comment to this post or better you can post to this forum

Good Luck!

mini-2440-board

折騰半天，還是沒有用，沒有解決Illegal instruction錯誤問題。

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