I installed LLVM on my Windows machine. And now I want Emacs tools to use it. I changed company-clang-executable to "path/to/LLVM/bin/clang.exe". Now I think it finds Clang but somehow completions does not work. It only completes trivial things like main, double etc. I feel like I have to add some directories for company to look but I don't know how. I found ways of adding your own projet's directory but thats all.
EDIT: Here is what I did so far. I have;
(eval-after-load "company" (setq company-clang-arguments "-I/c/msys64/include"))
I also ofcourse did standard things from manual beforehand to enable company-clang. I also checked with Emacs M-! that Emacs recognize executable named clang. But still no completion.