Establishment of the QT Development Environment

Development Mode:

Simulate frame buffering through qvfb on the host federa

After development, use QT-embedded to re-compile and download the program to run on ARM (QT needs to be installed on arm)

Software required for development:

• Qtopia-free-1.7.0.tar.gz
• Qt-x11-2.3.2.tar.gz
• Tmake-1.11.tar.gz
• Qt-embedded-2.3.7.tar.gz

Set qvfb:./configure-qconfig-qvfb-depths, 16, 32

 

Program running method:./qvfb &

./Canvas-qws (this method is generally used for debugging)

Note: The default display window size of QT is 640 x320 pixels, and other window sizes are specified: qvfb-width 480-Height & if you need to install the self-developed qtopia, the following steps are required:

1. Create the folder Hello under the/x86-qtopia directory, write the corresponding program, and execute:

Make

After compilation, the program is generated under $ qpedir/bin.

2. Set the configuration file hello. desktop and copy the configuration file to $ pedir/apps/applications:

Configuration File Content:

[Desktop entry]

Comment = An Hello demo.

Exec = Hello

Icon = Hello

Type = Application

Name = Hello

Run the following command:

CP hello. Desktop $ pedir/apps/Applications

3. Execute the program:

Qvfb &

Qpe

4. Modify the icon:

Design a 32*32 PNG image to the <qtopia>/pics/inline directory, and then convert it with qembed.

Qembed-images $ qpeidr/pics/inline/*. *> $ qpeidr/src/librabies/qtopia/inlinepics_p.h

Installation of host QT

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Note: The following installation steps are successfully tested in the RedHat 9 system. For installation steps, refer to the magicarm2410 platform lab manual.

Create directory x86-qtopia under/zylinux all packages are copied to this directory

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1. Install tmake

Tar xzvf tmake-1.11.tar.gz

Export tmakedir =/zylinux/x86-qtopia/tmake-1.11

Export tmakepath =/zylinux/x86-qtopia/tmake-1.11/lib/qws/linux-x86-g ++

Export Path = $ path:/zylinux/x86-qtopia/tmake-1.11/bin/

Tmake configuration file: tmake. conf

Tmake template: App. t is used to generate the makefile of the application

Lib. t is used to generate the makefile of the library file.

Subdirs. t is used to create the makefile of the program in the compiled subdirectory.

2. Install QT/X11

Tar xzvf qt-x11-2.3.2.tar.gz

CD qt-2.3.2/

Export qtdir = $ pwd

Export Path = $ qtdir/bin: $ path

Export LD_LIBRARY_PATH = $ qtdir/lib: $ LD_LIBRARY_PATH

./Configure-static-no-xft-no-OpenGL

Make

Make-C tools/qvfb

MV tools/qvfb Bin

Export qtedir = $ qtdir

CP bin/UIC $ qtedir/bin

CD ..

Qt configuration is complicated./configure -- Help

Make-C tools/designer graphic designer

3. Decompress qtopia

Tar xzvf qtopia-free-1.7.0.tar.gz

Export qpedir = $ PWD/qtopia

4. Install QT/embeded

The qpe configuration file is used here.

Tar xzvf qt-embedded-2.3.7.tar.gz

CD qt-2.3.7

Export qtdir = $ pwd

Export qtedir = $ qtdir

Export Path = $ qtdir/bin: $ path

Export LD_LIBRARY_PATH = $ qtdir/lib: $ LD_LIBRARY_PATH

CP $ qpedir/src/QT/qconfig-qpe.h src/tools

(Echo yes; echo yes) |./configure-platform linux-x86-g ++-qconfig qpe-qvfb-Depths 4,8, 16, 32

Make sub-Src // make-C SRC

CD ..

5. Install qtopia

CD qtopia-1.7.0

Export qtdir = $ qtedir

Export qpedir = $ pwd

Export Path = $ qtedir/bin: $ path

CD SRC

./Configure-platform linux-x86-g ++

Make

CD ../..

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Configure the script (complete installation in step 5 above, all the files need to be placed under/zylinux/x86-qtopia and run./build ):

#! /Bin/bash

Echo remove old dirs

Rm-RF tmake

Rm-RF QT

Rm-RF qt-x11

Rm-RF qtopia

Echo unpack all packages

Tar xzvf tmake-1.11.tar.gz

Tar xzvf qt-embedded-2.3.7.tar.gz

Tar xzvf qt-x11-2.3.2.tar.gz

Tar xzvf qtopia-free-1.7.0.tar.gz

Echo rename

Music tmake-1.11 tmake

Music qtopia-free-1.7.0 qtopia

Music qt-2.3.7 QT

Echo start install Qt-X11

CD qt-2.3.2

Export qtdir = $ pwd

Echo Yes |./configure-static-no-xft-no-OpenGL-no-Sm

Make-C src/MoC

CP src/MOC Bin

Make-C SRC

Make-C tools/designer

Make-C tools/qvfb

CP tools/qvfb Bin

Strip bin/UIC bin/MOC bin/designer bin/qvfb

# Cp bin/UIC $ qtedir/bin

CP bin /? * ../QT/bin

CD ..

# CP $ qtdir/bin /? * QT/bin

MV qt-2.3.2 qt-x11

Echo start setting env-VaR

Export qtdir = $ PWD/QT

Export qtedir = $ qtdir

Export qpedir = $ PWD/qtopia

Export tmakedir = $ PWD/tmake

Export tmakepath = $ tmakedir/lib/qws/Linux-generic-G ++

Export Path = $ qtdir/bin: $ qpedir/bin: $ tmakedir/bin: $ path

Export LD_LIBRARY_PATH = $ qtdir/lib: $ LD_LIBRARY_PATH

Echo start build QT/embedded

CD QT

Make clean

CP $ qpedir/src/QT/qconfig-qpe.h src/tools

(Echo yes; echo yes) |./configure-platform Linux-generic-G ++-qconfig qpe-qvfb-Depths 16,24, 32

Make-C SRC

CD ..

Echo start build qtopia

CD qtopia/src

./Configure-platform Linux-generic-G ++

Make

Echo OK

The installation path is as follows:

Qt-embedded-2.3.7.tar.gz/zylinux/x86-qtopia/QT

Qtopia-free-1.7.0.tar.gz/zylinux/x86-qtopia/qtopia

Qt-x11-2.3.2.tar.gz/zylinux/x86-qtopia/qt-x11

Tmake-1.11.tar.gz/zylinux/x86-qtopia/tmake

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After installation, export the environment variables before development:

Export qtdir = $ PWD/QT

Export qpedir = $ PWD/qtopia

Export tmakedir = $ PWD/tmake

Export tmakepath = $ tmakedir/lib/qws/Linux-generic-G ++

Export Path = $ qtdir/bin: $ qpedir/bin: $ tmakedir/bin: $ path

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NOTE: If some databases cannot be found during running, you need to set the library path:

Add the path of the QT Library to the/etc/lD. So. conf file.

/Zylinux/x86-qtopia/lib

/Zylinux/x86-qtopia/qtopia/lib

After the path is added, run ldconfig as root in the/etc directory to make the QT library take effect.

Note: Undefined reference to vtable for "XXX: XXX" SOLUTION

If q_object is added to a class, the link prompt is: Undefined reference to vtable for "XXX: XXX". No problem occurs if you delete it.

Solution: When qmake generates makefile, the Class header file does not contain q_object. Therefore, MoC XXX is not used in the corresponding makefile. H command. run qmake again to solve the problem. when searching for a solution, qmake does not handle the problem. the q_object in the CPP file. in the CPP file, undefined reference to vtable for "XXX: XXX" will also be generated ". in this case, use moc xxxx first. CPP generates the corresponding MOC file and then includes it. CPP to solve this problem.