Hi all.
I’m encountering some issues when remote debugging a Qt application using QtCreator 2.6.1.
My scenario:
Target: ARM embedded Linux with Qt4.7 and gdbserver
Host: x86 running QtCreator 2.6.1 and gdb
My settings:
On QtCreator, I have added compiler, Qt libraries, device and kit on Tools->Options->Build&Run:
Device:
Name: mytarget
Type: Generic Linux
Machine type: Physical Device
Authentication Type: Password
Host name: <target IP address>
Free Ports: 1000-10100
SSH port: 22
Timeout: 5s
Username: root
Password: <my password>
Kit:
Name: myboard
Device type: Generic Linux Device
Device: mytarget
Sysroot: (empty)
Compiler: link to the compiler I have added
Debugger: link to the cross gdb (i.e., arm-linux-gdb)
Qt version: link to the new Qt I have added
Qt mkspec: link to a specific mkspec that I have created starting from linux-g++
With these settings, I have been able of successfully cross-compiling my application.
When trying remote debugging, the only viable method seems to be “Attach to Running Application”, since:
“Start and Debug external application” doesn’t let select my kit (i.e., only “Desktop” is available)
“Attach to Remote Debug Server” doesn’t let select my kit (i.e., only “Desktop” is available)
“Start Remote Debug Server Attached to Process” does nothing
Therefore, I have started my remote application and used “Attach to Running Application” to start remote debugging.
The result of “Attach to Running Application”, however, changes based on kit’s sysroot setting:
If I leave sysroot empty, then remote debugging complains with the error message “Cannot find ABI for remote process”
If I set sysroot equal to a copy of the remote filesystem, then remote debugging complains with the error message “Cannot find local executable for remote process”
Finally, if I set sysroot equal to the build directory of the project, remote debugging works
I would really appreciate if someone can answer one or more of the following questions:
1. What is the purpose of kit’s sysroot field and what it should contain ?
2. I assume that the kit should be a property independent by the specific project. So, why remote debugging works only if I set sysroot equal to the application build directory ?
3. What is the right method for remote debugging of a Qt application in my scenario ? “Attach to Running Application ?
4. Why “Start and Debug external application” and “Attach to Remote Debug Server” don’t let me select my kit ?
Many thanks for your help.
↧