Linux Device Drivers 3 examples

1 files changed, 43 insertions, 0 deletions

diff --git a/scull/Makefile b/scull/Makefile
new file mode 100644
index 0000000..089b144
--- /dev/null
+++ b/scull/Makefile
@@ -0,0 +1,43 @@
+# Comment/uncomment the following line to disable/enable debugging
+#DEBUG = y
+
+
+# Add your debugging flag (or not) to CFLAGS
+ifeq ($(DEBUG),y)
+  DEBFLAGS = -O -g -DSCULL_DEBUG # "-O" is needed to expand inlines
+else
+  DEBFLAGS = -O2
+endif
+
+CFLAGS += $(DEBFLAGS)
+CFLAGS += -I$(LDDINC)
+
+ifneq ($(KERNELRELEASE),)
+# call from kernel build system
+
+scull-objs := main.o pipe.o access.o
+
+obj-m	:= scull.o
+
+else
+
+KERNELDIR ?= /lib/modules/$(shell uname -r)/build
+PWD       := $(shell pwd)
+
+modules:
+	$(MAKE) -C $(KERNELDIR) M=$(PWD) LDDINC=$(PWD)/../include modules
+
+endif
+
+
+
+clean:
+	rm -rf *.o *~ core .depend .*.cmd *.ko *.mod.c .tmp_versions
+
+depend .depend dep:
+	$(CC) $(CFLAGS) -M *.c > .depend
+
+
+ifeq (.depend,$(wildcard .depend))
+include .depend
+endif