Need help setting up local cross compile and debug on remote

[jchl]

I’m new to using VisualGDB (or GDB in general). I created a Linux project using the “Linux Project Wizard”. During the setup I choose the “Build the project locally with a cross-compiler” option. For the cross-toolchain setup, I set it up to use the cross tools I got from the cygwin ports (http://sourceware.org/cygwinports/) and made sure I updated the GCC/G++/AR/OBJCOPY executable to point to the x86_64-pc-linux-gnu-XXX.exe versions. I also set it up to deploy to a Linux Virtual Machine. After I clicked next, it did some self test and everything seems to went through fine. Then I continue to create the project.

After the project is created, it built fine. But when I tried to set a break point and click debug, I get a warning dialog box from VisualGDB saying:
“Warning: The gdbserver has exited with code 1. Do you want to abort debugging?”
If I clicked no, I just get another error dialog box saying:
Failed to start debugging session. GDB has reported the following error: ^error.msg=”The program is not being run.”

On the GDB Session window, I see:
E:utilscygwin64bingdb.exe –interpreter mi “C:TmpLinuxTestProject/Debug/LinuxTestProject”
Remote register badly formatted: T0506:0000000000000000;07:f0ebffffff7f0000;10:b0b6ddf7ff7f0000;thread:p30d0.30d0;core:0;
here: 00000000;07:f0ebffffff7f0000;10:b0b6ddf7ff7f0000;thread:p30d0.30d0;core:0;
The program is not being run.
Invalid thread id: 1
No registers.

And the gdbserver windows has:
Process /tmp/LinuxTestProject created; pid = 21927
Can’t bind address: Address already in use.
Killing process(es): 21927

Does anyone know what is going on?

From my Visual Studio’s “VisualGDB Launcher Output” window, I do see that the built binary is successfully deployed (and I confirmed that the file do exists on my Linux VM on the indicated path):
VisualGDB: Executing predebug actions
VisualGDB: Deploying C:TmpLinuxTestProject/Debug/LinuxTestProject to /tmp/LinuxTestProject on testlinuxvm…
VisualGDB: Copy file C:TmpLinuxTestProject/Debug/LinuxTestProject on local computer to /tmp/LinuxTestProject on testlinuxvm
VisualGDB: Launching gdbserver
VisualGDB: Run “gdbserver :2000 “$(DeployPath)” ” in directory “$(DeployDir)” on testusr@testlinuxvm (SSH)
VisualGDB: Launching custom program console
VisualGDB: Launching gdb

Can we do local cross compile build and debug on remote machine at all?

Just as a quick test to see if it is an issue with using a Linux virtual machine, I did tried creating a new identical default project to build on remote using the same Linux VM. That works fine.

If anyone knows what I did wrong, please let me know. Any help is appreciated.

John

[jchl]

After I submitted this post, I just realized that I the gdb.exe that I have was targeted for x86_64-pc-cygwin and that might be my problem. I’ll see if I can get one that is target for x86_64-pc-linux-gnu.

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