netdev - Re: [PATCH] Allow building iwl3945 without iwl4965.

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Date:	Tue, 29 Apr 2008 19:36:35 -0700 (PDT)
From:	"Randy.Dunlap" <rdunlap@...otime.net>
To:	Zhu Yi <yi.zhu@...el.com>
cc:	"John W. Linville" <linville@...driver.com>,
	Jason Riedy <jason@....org>,
	"David S. Miller" <davem@...emloft.net>, netdev@...r.kernel.org
Subject: Re: [PATCH] Allow building iwl3945 without iwl4965.

On Wed, 30 Apr 2008, Zhu Yi wrote:

> On Tue, 2008-04-29 at 09:27 -0400, John W. Linville wrote:
> > 
> > > Do we have a way to make "select IWLWIFI" generate CONFIG_IWLWIFI
> > with
> > > the same state as CONFIG_IWLCORE (or CONFIG_IWL3945)? AFAICS,
> > > CONFIG_IWLWIFI is always 'y' whenever CONFIG_IWLCORE is 'y' or 'm'.
> > If
> > > the latter is 'm', the Makefile will generate a empty built-in.o
> > which
> > > requires vmlinux to update unnecessarily every time we only compile
> > > iwl3945/4965 modules.
> > 
> > Can you do something like  "default IWLCORE'?  Untested, off the top
> > of my head...
> 
> I just realized the kernel now updates vmlinux when I type 'make' even
> if nothing is changed in the source code. Is this a bug or feature?

I see files in arch/x86/kernel/acpi/realmode/ always being built.
Is that what you see or is it something else?

You can do
  make V=2 all >build.log 2>&1
to see what is being rebuilt and hopefully why.
Then post that and maybe we can fix it (with the right people helping).

-- 
~Randy
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