initial commit

this is a simple try of unuseful code in kernel space, debugfs is
used to create a dir and a file

1 files changed, 23 insertions, 0 deletions

diff --git a/Makefile b/Makefile
new file mode 100644
index 0000000..4104b64
--- /dev/null
+++ b/Makefile
@@ -0,0 +1,23 @@
+#ccflags-y += -g
+
+# Makfile assignments:
+#  := value at right is expanded and assigned at declaration time
+#   = value at right is expanded only when it is used, hence it is a reference
+#  ?= value at right is assigned only if the variable doesn't have a value
+#
+#
+
+# objects that are part of hello module (hello.o)
+hello-y += main.o debug.o
+
+# .ko module to be created
+obj-m := hello.o
+
+# '-C' changes the dir
+# '-M' causes the the kernel's toplevel Makefile to move back into this dir
+#      before trying to build 'modules' target
+all:
+	make -C /lib/modules/$(shell uname -r)/build KCPPFLAGS="-I$(CURDIR)" M=$(PWD) modules
+
+clean:
+	make -C /lib/modules/$(shell uname -r)/build M=$(PWD) clean