Exporting a project on Linux using a C++ GDExtension with debug symbols.

Help Programming
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1

Godot Version

4.4.1

Question

Hi,

I asked this on discord, but did not manage to fix my issue, so I try here.

TLDR

I want to export a project that uses a GDExtension in C++ with debug symbols. How to do that?

Context

A bit more context and what I tried so far:
I am trying to debug a strange crash on my project, it seems to happen sometimes when some C++ code from my GDExtension is called. When this happens, the backtrace shows only the address of the functions. I tried to export the project with debug symbols, but so far, I did not manage to do that. I managed to compile the GDExtension with debug information, but it seems that during the export the debug symbols are striped. The SConstruct file comes from the tutorial on GDExtension, and I compiled the extension with scons target=template_debug dev_build=yes debug_symbols=yes compiledb=true platform=linux. I tried with many variations of this command line, but none worked.
I also tried to build Godot with debug symbols, it worked, now in the backtrace, I have the symbols for the engine, but still no symbols for the GDExtension part. Furthermore, I tried to compile the export template also with debug symbols. But so far, no luck.

2

You need to have debug symbols for the plugin, do you have those? This is usually defined in the <plugin name>.gdextensionfile

3

I am not sure I understand fully. I checked, the library produced seems to have the debug symbols, (the file libinstance.linux.template_debug.dev.x86_64.so has debug symbols) and my .gdextension file contains linux.debug.x86_64 = "res://bin/libinstance.linux.template_debug.dev.x86_64.so". It seems to me that somehow, when exporting the project, the debug symbols seem to be stripped.

4

Debug build has a dubug option that is not obvious when you provide the name.

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You can also specify a debug feature tag.

5

The debug option you mention, is it the “Export With Debug” checked box? If this is the case, I checked and it is on when I export the project. On your screenshot, you seem to be in the “Export PKS/ZIP” case, but I use “Export Project” to be able to run the game outside the editor as so far it is the only way I have found to get the backtrace when a crash occurs.

I read the page on feature tag, but I don’t see how that can help me.