Makefile for a single source file

Makefile for a single source file

[Kevin Wilson]

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 ?)

Regards,
Kevin

Makefile for a single source file

[Kristofer Hallin]

Is this part of the Eudyptula Challenge?
On 13 Sep 2014 16:35, "Kevin Wilson" <wkevils@gmail.com> 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 ?)
>
> Regards,
> Kevin
>
> _______________________________________________
> Kernelnewbies mailing list
> Kernelnewbies at kernelnewbies.org
> http://lists.kernelnewbies.org/mailman/listinfo/kernelnewbies
>
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Makefile for a single source file

[Kevin Wilson]

Hi,
No.
This is a newbie question, and I believe this is the right mailing
list to get help.

Regards,
Kevin

On Sat, Sep 13, 2014 at 5:36 PM, Kristofer Hallin
<kristofer.hallin@gmail.com> wrote:
> Is this part of the Eudyptula Challenge?
>
> On 13 Sep 2014 16:35, "Kevin Wilson" <wkevils@gmail.com> 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 ?)
>>
>> Regards,
>> Kevin
>>
>> _______________________________________________
>> Kernelnewbies mailing list
>> Kernelnewbies at kernelnewbies.org
>> http://lists.kernelnewbies.org/mailman/listinfo/kernelnewbies

Makefile for a single source file

[Greg KH]

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

Makefile for a single source file

[Bruno Guedes Souto]

Kevin Wilson <wkevils <at> gmail.com> writes:

 
> 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 ?)
> 
> Regards,
> Kevin
> 

Have you tested it? Test exactly what you are asking and see what happens. 
That's the best way to learn.

Regards

BGS