--- /dev/null
+# Makefile for the kernel ISDN subsystem and device drivers.
+
+# Each configuration option enables a list of files.
+
+obj-$(CONFIG_ISDN_I4L) += isdn.o
+obj-$(CONFIG_ISDN_PPP_BSDCOMP) += isdn_bsdcomp.o
+obj-$(CONFIG_ISDN_HDLC) += isdnhdlc.o
+
+# Multipart objects.
+
+isdn-y := isdn_net.o isdn_tty.o isdn_v110.o isdn_common.o
+
+# Optional parts of multipart objects.
+
+isdn-$(CONFIG_ISDN_PPP) += isdn_ppp.o
+isdn-$(CONFIG_ISDN_X25) += isdn_concap.o isdn_x25iface.o
+isdn-$(CONFIG_ISDN_AUDIO) += isdn_audio.o
+isdn-$(CONFIG_ISDN_TTY_FAX) += isdn_ttyfax.o
+