Setting up cross compiling environment & Qt/X11 ... - Bytemark Hosting

More documents

Recommendations

Info

You will have to log out and log in again for changes to take effect. 6.2 Using Qt There are tree different ways of using Qt for compilation. You can simply use the terminal to compile your Qt code, you can use the QtCreator or you can use Eclipse. For the QtCreator there are two guides, depending on which version of QtCreator you are using. It is recommended to use version 2 of QtCreator because it is much easier to set up cross compiling. 6.2.1 Using Qt in the Terminal To use Qt in the terminal you simply need to go into the folder where your sources are and run $ qmake project to create the .pro file. This is required only once for each project but it needs to be done again when you add source files. After that you can create a make file by invoking $ qmake Qt will take care of cross compilation and you just have to run $ make to compile the project. 6.2.2 Installing QtCreator Install the normal QtCreator for X86 on your desktop machine. You do not need to install the whole Qt libraries, only what is required for the QtCreator itself. To install QtCreator on a Debian based system (like Ubuntu) type this in a terminal: $ sudo aptget install qtcreator If you also want to install Qt for a local compilation invoke this command: $ sudo aptget install libqt4dev 6.2.3 Using Qt with QtCreator 1.x.x Start your QtCreator and create a simple project. Now go to Tools → Options → Debugger → Gdb and select the ARM cross gdb: /opt/eldk5.2.1/armv7a/sysroots/i686eldklinux/usr/bin/armv7avfpneonlinuxgnueabi/armlinuxgnueabigdb On the left side go to Qt4 → Qt Versions and add a new Qt version to Manual. Call it something like Qt 4.8.2 for ARM and add the qmake executable: /usr/local/Trolltech/QtarmX11/bin/qmake Now the QtCreator is ready for cross compiling. There is one issue with the ELDK which causes g+ + to complain about this: note: the mangling of 'va_list' has changed in GCC 4.4 This is a known issue and can be ignored. To tell GCC to suppress this message you can pass the argument -Wno-psabi to it. To do this in a Qt project add the following line at the end of your .pro file: 14/20
QMAKE_CXXFLAGS += Wnopsabi 6.2.4 Using Qt with QtCreator 2.x.x First create your project like you would do it for a normal desktop application. Therefore click on File → New File or Project and select the type of project you want to create. For example a Qt GUI Application like below. Click Choose to continue. After that you will be asked to choose a project name: Enter a name and click Next to continue. The next step is to select which compilers to use. Normally you should let the default setting "For Each Qt Version One Debug And One Release". This will create a build configuration for your local Qt (if you have installed it) and the cross compiling version. 15/20
Page 1 and 2: Setting up cross compiling environm
Page 3 and 4: Make sure that the installer script
Page 5 and 6: Set a name for the project, we will
Page 7 and 8: Compile the program by hitting the
Page 9 and 10: Right click on the connection and s
Page 11 and 12: Go the the Debugger tab. In the are
Page 13: Qt/embedded which doesn't need a X
Page 17 and 18: Enter a name for the project, I wil
Page 19 and 20: 7 Running an application After you

Setting up cross compiling environment & Qt/X11 ... - Bytemark Hosting

You also want an ePaper? Increase the reach of your titles

Delete template?

Save as template?