driver compilation

Hi
I need to compile only the rpspi driver to modify it.
Is it possible to compile only the driver or do i need to recompile linuxcnc integraly ?
 

I think that you _probably_ need to compile in-tree just to get the environment set up right.

You can _try_ compiling and installing with halcompile. It's an easy experiment, but one that I suspect will fail.

sudo halcompile --install rpspi.c

thanks it works
but it needs the complete hostmot2 directory to compile
i added some custom fpga boards (artix 7)
thanks again