I was not able to compile with 19 gpu's, i've got a lot of errors. 16 gpu's version compiled without any troubles.
I htink tpruvot must check this situation.

You need to modify 2 more files...... check here....
https://github.com/tpruvot/ccminer/pull/54It build without any error for me..... But i don't have 19 GPU rig to test....

Please try and let us know.