Handling of difficult and miscellaneous problems during the installation and configuration of qt5.5.1 desktop version (configuring arm compilation Kit)

Recorded in red hat 6.3 Installation under system QT5.5.1 Environmental time , During compilation , Solutions to various problems encountered in the process of configuring the compilation Suite . Describes how to configure Android Compile environment 、 The embedded ARM Compilation environment, etc .

QT5.5.1 Handling of difficult and miscellaneous problems during the installation and configuration of desktop version （ To configure ARM Compilation Suite ）

QT 5.5.1 Red hat compiler

red cap 6.3 install QT5.5.1 Compiler problem solving ：

Install package command ：rpm -ivh xxxxx.rpm

solve the problem 1： structure arm Compiler Suite .

Cause of error ： choice arm The software crashes when the compiler path .

terms of settlement ： Fill in by hand arm compiler g++ The path of .

benefits ： adopt QT IDE The software can directly compile the program that the development board can run directly .

Manually copy the executable file to the development board to run ！

solve the problem 2： compile PC The desktop version QT Application error .

Error problem ：

error: cannot find -lGL

error: collect2: ld returned 1 exit status

Cause of error ： The following are missing 3 Databases

mesa-libGL-devel

mesa-libGLU-devel

freeglut-devel

terms of settlement ： red cap iso The installation package comes with the virtual CD , Direct access to /media/RHEL_6.3 i386 Disc 1/Packages Install in the directory .

Be careful ： You need to click on the lower right corner of the virtual machine to display iso Mount the virtual disc to Linux In the system .

Installation steps ：

Go to through the file manager Packages Catalog , Find the corresponding installation package , Then right click to install .

After the above installation package is successfully installed , You can run it directly QT Program ：

solve the problem 3： Embedded development board qt5 Font placement problem .

Problem description ： qt5 Fonts can only be found in the installation directory specified during migration

terms of settlement ：

export QT_QPA_FONTDIR=$QTDIR/lib/fonts Set the environment variable , Solve the font path problem .

The key is to add export keyword , Otherwise the settings don't work .

solve the problem 4： red cap QT5.5 android To configure

Be careful ： To build an Android environment, you need to download Android Version of QT.

solve the problem 5： Report errors gtk Library link error

take QT Install under directory libqgtk2.so Delete the library .

Example ：

/opt/Qt5.5.1.1/5.5/gcc/plugins/platformthemes/libqgtk2.so

After solving this problem ,QT The program can open the local file system , Browse file path . Otherwise, you need to operate the file system , Or when you need to select a path , The program will crash .

The following code will not work properly until it is resolved ：

void Widget::on_pushButton_clicked() { QFileDialog::getOpenFileName(this, tr("Open File"), "/", tr("Images (*.png *.xpm *.jpg)")); }

solve the problem 6：

QT5.5.1 In the red hat, just click the options related to browsing the file system , The software will crash .

Error message ：

./qtcreator: symbol lookup error: /opt/Qt5.5.1.1/Tools/QtCreator/bin/plugins/platformthemes/libqgtk2.so: undefined symbol: gtk_dialog_get_widget_for_response

Question why ：QT Self contained GTK Incompatible library version .

terms of settlement ： take QT Install under directory libqgtk2.so Delete it to solve the problem .

Solution steps ：

rm /opt/Qt5.5.1.1/Tools/QtCreator/bin/plugins/platformthemes/libqgtk2.so

Be careful ： The red part is self QT Installation path for .