Building multi-file modules

[Yuva Raj]

Hi Stephens,

Try this below one.

obj-$(CONFIG_FOO) +=  foo.o
foo-y := bar.o baz.o

This compiles module foo.ko from the foo.c , bar,c baz.c

Refer this for more information on Kbuild.

https://www.kernel.org/doc/Documentation/kbuild/modules.txt

Regards,
Yuva



On Tue, Apr 30, 2013 at 1:48 AM, Arlie Stephens <arlie at worldash.org> wrote:

> Hi Folks,
>
> I've got a module, call it foo, presently built from a single source
> file, drivers/char/foo.c It's gotten enormous, so I want to split it.
> Ideally I'd keep the original name for one of the source files. So
> what I want is a module named foo, build from source files foo.c,
> bar.c and baz.c
>
> kbuild is being uncooperative.
>
> The following works:
>
> obj-$(CONFIG_FOO) += foo_renamed.o
> foo_renamed-objs := foo.o bar.o baz.o
>
> I'd just prefer not to rename either the module or the original source
> file. Is this supposed to be possible, and if so, how?
>
> I'm on RHEL 6.1, aka kernel 2.6.32, in case that matters.  Also, in
> case that matters, I'm building the module into the kerenl ("y" not
> "m" in the config.)
>
>
> ----what I've tried----
> The following gives me warnings from make:
>
> obj-$(CONFIG_FOO) += foo.o
> foo-objs := foo.o bar.o baz.o
>
>
> The following never compiles foo.c:
>
> obj-$(CONFIG_FOO) += foo.o
> foo-objs := bar.o baz.o
>
>
> Thanks for any insight,
>
> --
> Arlie
>
> (Arlie Stephens                                 arlie at worldash.org)
>
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