Unknown argument "-mlongcalls"; did you mean "-mlong-calls" when indexing ESP32 project

[erusyd]

When I use Sourcetrail to index an ESP32 CMake project, I get serveral hundreds of ERRORs:

"-mlongcalls" is from compile_commands.json which is generated using bear, for example:

I know this is because Sourcetrail use Clang to parse C/C++ files. Clang uses "-mlong-calls", but GCC uses "-mlongcalls".
So how to set Sourcetrail to recognize GCC's "-mlongcalls" argument?