Guidance for setting up Qt for Cross Compilation

gmahan

Hi,

I am trying to cross compile for my target application on my host machine, but I'm not sure how to go about it. I have read a few blogs, but I am not able to connect the pieces. Here is my configuration details:

Qt : 5.4.0 (Qt Creator 3.3.0)
Host Machine: x86 Fedora 19 (64 bit)
Target Machine: Intel x86 Debian Linux

I have Qt5 installed on my target device and can build on the target or build on my host using the root file system of my target device by using chroot.

I want to be able to cross compile from QtCreator and launch the application on my target device. I have no problem in setting up the SSH and the sending the application over to the target, but I am not sure how to configure the compiler and the tool chain.

I have the entire root file system of my target on my host machine, so I should have access to all of the Qt5 libraries and compiler for my target, but I'm not sure how to set this up. Here are my questions:

Where should I get the compiler for my target? Should I use /usr/bin/g++ (target rfs)
Where do I get qmake for the target? The following failed to load TargetRFS#/usr/local/Qt-5.4.0/bin/qmake
Do I need to obtain a tool chain for this ?
Anything else I might need to do?

Thanks in advance for any help on this.

SGaist

Hi,

Did I read correctly that you have one 32bit and one 64bit machine ?

gmahan

They are both 64 bit machines.

SGaist

Then why cross-compile ? The only big difference is then the distribution

gmahan

Okay, that's what I thought. But when I used the native compilers on my host machine and loaded the application on my target I got an error stdin is not a tty when the application ran.

SGaist

How are you calling your application in the target ? Do you have a window manager ?