What was the .txt file which allows clangd to understand with what compile arguments a program gets compiled in?

Question

I remember that there's a ".txt" file which allows to define link/compile-time arguments, but I've forgotten it's name.

I tried to google for answer.

Answer 1

The text file is called compile_flags.txt.

It's discussed at https://clangd.llvm.org/installation#compile_flagstxt.

Note that there are some shortcomings of compile_flags.txt compared to the more common way of configuring a project for use with clang-based tooling, compile_commands.json; most notably, clangd won't index your project with compile_flags.txt.