From mboxrd@z Thu Jan  1 00:00:00 1970
From: greg@kroah.com (Greg KH)
Date: Sat, 13 Sep 2014 08:13:20 -0700
Subject: Makefile for a single source file
In-Reply-To: <CAGXs5wUizbPNOVXmO6AeUHhQO6ha7oWaGX4QqbWL4qTss1X2Rg@mail.gmail.com>
References: <CAGXs5wUizbPNOVXmO6AeUHhQO6ha7oWaGX4QqbWL4qTss1X2Rg@mail.gmail.com>
Message-ID: <20140913151320.GA1705@kroah.com>
To: kernelnewbies@lists.kernelnewbies.org
List-Id: kernelnewbies.lists.kernelnewbies.org

On Sat, Sep 13, 2014 at 05:34:11PM +0300, Kevin Wilson wrote:
> Hi,
> I have a single source file which I wrote, implementing a kernel
> module: helloworld.c
> 
> In order to built it, I prepared the following Makefile:
> 
> obj-m += helloworld.o
> 
> all:
>      make -C /lib/modules/$(shell uname -r)/build M=$(PWD) modules
> 
> clean:
>      make -C /lib/modules/$(shell uname -r)/build M=$(PWD) clean
> 
> 
> 
> Is it ok ? or should the obj-m parameter be *different* than the the
> source file (without the *.o suffix)
> (something like obj-m += hello.o ?)

Does the above work for you?

Have you read the kernel documentation about how to write stand-alone
Makefiles?  It should answer this question for you, right?

thanks,

greg k-h