Nios-V C++ Debug Problem

Balerion · ‎09-26-2025

Hi all,

I am trying to debug a simple nios-v C++ app but I am getting an error while debugging. The problem is when I create a project with the following commands

niosv-bsp -c -p=niosv.qpf -s=niosv.qsys -t=hal software/bsp/settings.bsp

niosv-app -b=software/bsp -a=software/app -s=software/app/hello.cpp

it gives an error as "Launching app Default has encountered a problem. Error in services launch sequence GDB prompt not read." However, when I execute the following commands to create a project

niosv-bsp -c -p=niosv.qpf -s=niosv.qsys -t=hal software/bsp/settings.bsp

niosv-app -b=software/bsp -a=software/app -s=software/app/hello.c

I can debug it without a problem.

Could you please help me about how to debug a cpp application?

Thanks, Balerion

KalenB_Altera · ‎09-26-2025

Hi Balerion,

Sorry to hear you are having issues. Can you help provide me some additional details?

What version of Quartus are you using?

What OS are you using?

Does the error occur when you are running niosv-app, or is it from the debugger?

Balerion · ‎09-26-2025

Hi,

I am using Quartus 24.3 Pro and Windows 10. I added some ss to the attachment. The first one c.png shows the app project that is created with niosv-app command and hello.c. It is working I can debug it. However the second one cpp.png is not working I am not able to debug it. I created that with same command niosv-app but the source file was hello.cpp. I need to debug a cpp project. Could you please help me?

Thanks,

Balerion

KalenB_Altera · ‎09-26-2025

Hi Balerion,

Can you confirm that when you build your C++ App it has compiled correctly to generate an .elf and .hex file? Here I'm just looking to confirm that your CMake file correctly identifies c++ as the language, but also that your settings.bsp file was configured to enable c++.

Thanks.

Balerion · ‎09-27-2025

Hi,

I just verified that my .elf file and .out file generated successfully. It says "Build Finished. 0 errors, 0 warnings. (took 10s.598ms). İt didn't generate .hex by default. It generated a .out and a .elf file.

Thanks, Balerion