For generating compiler flag database for makefile projects.

https://pypi.org/project/compiledb/


For ale:
https://github.com/dense-analysis/ale


For YCM:
https://github.com/ycm-core/YouCompleteMe?tab=readme-ov-file#option-2-provide-the-flags-manually
https://github.com/ycm-core/YouCompleteMe?tab=readme-ov-file#commands


For asciidoctor writer guide:
https://asciidoctor.org/docs/asciidoc-writers-guide/
