readme split

hello_host/Makefile

@@ -0,0 +1,12 @@
+obj-m += hello.o
+ccflags-y := -Wno-declaration-after-statement -std=gnu99
+
+.PHONY: all clean
+
+all: hello.ko
+
+hello.ko: hello.c
+	$(MAKE) -C '/lib/modules/$(shell uname -r)/build' M='$(PWD)' modules
+
+clean:
+	$(MAKE) -C '/lib/modules/$(shell uname -r)/build' M='$(PWD)' clean

hello_host/README.md

@@ -0,0 +1,3 @@
+# Hello host
+
+Minimal host build system sanity check example.

hello_host/hello.c

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+#include <linux/module.h>
+#include <linux/kernel.h>
+
+static int myinit(void)
+{
+	pr_info("hello init\n");
+	return 0;
+}
+
+static void myexit(void)
+{
+	pr_info("hello exit\n");
+}
+
+module_init(myinit)
+module_exit(myexit)
+MODULE_LICENSE("GPL");