Debugging is broken, GDB looks for the source file in the build dir

[illwieckz]

Thread 1 "daemon" received signal SIGSEGV, Segmentation fault.
0x00005b2ca98f640b in TextureData::operator== (this=0x5b2cd4b732a8, other=...) at src/engine/renderer/Material.h:195
warning: 195	src/engine/renderer/Material.h: No such file or directory

And debuginfod prints that, showing it finds the source in the build dir, not in the source dir:

Downloading source file /path/to/build/src/engine/renderer/Material.h

[slipher]

FWIW you can use a command to tell GDB the root path for the source.

[illwieckz]

Very likely, but we better not do such stripping in the back.

[slipher]

Done. #1802