Preprocess fails about emacs-ccls

[MaskRay]

This may be a somewhat ugly solution:

(nbutlast (gethash "args" (ccls-file-info)) 3)

But -working-directory= is also important. It gives the "directory": ... information.

[MaskRay]

-working-directory and -resource-dir are clang-specific options not known to GCC. When the first argument (compiler driver) is gcc, there might be some unavoidable processing to make up a runnable command line, but I'm not sure how this should be done.

[myrgy]

I think there are 2 options - use gcc with original command line or perform call using clang, embedded into ccls.
UPD: here is rtags solution: https://github.com/Andersbakken/rtags/blob/4747d5b695bee40c3b0a2e3591ac8897571edd66/src/Preprocessor.cpp

[myrgy]

Better than nothing! will give a try! Thanks!

[MaskRay]

Since this can be easily fixed I am closing this