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

Click on Connect to connect to the DX4. Nautilus will create a SFTP network connection and
mount it for you. You can right click on the mounted folder on the left side and select Add
Bookmark to add this connection as a bookmark.
Keep in mind that you are acting as the user you selected when you created the connection. Means
that as a normal user you don't have write access to files except those in you home directory. If you
are logged in as root and create files in the home directory of an other user, the other use will not be
able to delete or modify the files you created.
7.2 Installing Qt on the DX4
To run a Qt application on the DX4 it is required to copy the Qt libraries and some other stuff to the
DX4. You should first set up the connection to copy files to the DX4 like described in chapter 7.1.
Now you have to copy the files from /usr/local/Trolltech/ on your host machine in the same
directory on the DX4. It is required to be connected as root to the DX4.
The folder /usr/local/ may not exist on the DX4, just create it.
7.3 Special libraries
If you need special libraries and special versions from ELDK which already exist on the DX4 you
need to run the application with a dynamic linker because it is not recommended to overwrite the
existing libraries. To do this copy the rootfs of ELDK to the target system in a subdirectory, for
example in /eldk. The rootfs of ELDK is located in /opt/eldk-5.2.1/armv7a/sysroots/i686-eldk-linux/
You should end up with a folder structure like /eldk/usr/lib/ on the DX4. You do not have to copy
the full rootfs. Required are only the folders /lib and /usr/lib. It is also possible to remove unneeded
libraries from this folders.
To run you application with a dynamic linker that uses special paths use the following command
(this is a single line with a space at the line break):
$ /eldk/lib/ld­linux.so.3 ­­library­path /eldk/lib:/eldk/usr/lib
/path/to/your/program
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