Suppose that the driver snd-xyz have several source files. They are located in the new subdirectory, pci/xyz.
Add a new directory (xyz) in
alsa-driver/pci/Makefile as below
obj-$(CONFIG_SND) += xyz/
Under the directory xyz, create a Makefile
Example 15.1. Sample Makefile for a driver xyz
ifndef SND_TOPDIR
SND_TOPDIR=../..
endif
include $(SND_TOPDIR)/toplevel.config
include $(SND_TOPDIR)/Makefile.conf
snd-xyz-objs := xyz.o abc.o def.o
obj-$(CONFIG_SND_XYZ) += snd-xyz.o
include $(SND_TOPDIR)/Rules.make
Create the Kconfig entry
This procedure is as same as in the last section.
Run cvscompile script to re-generate the configure script and build the whole stuff again.