linux-kernel - Re: Re: how about KBUILD

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Message-ID: <20100803101220.GI5129@cr0.nay.redhat.com>
Date:	Tue, 3 Aug 2010 18:12:20 +0800
From:	Américo Wang <xiyou.wangcong@...il.com>
To:	hacklu <embedway.linux@...il.com>
Cc:	Américo Wang <xiyou.wangcong@...il.com>,
	linux-kernel <linux-kernel@...r.kernel.org>
Subject: Re: Re: how about KBUILD_MODNAME

On Tue, Aug 03, 2010 at 05:35:40PM +0800, hacklu wrote:
>
>I am compiling the boardcom's driver now.
>the driver had defined EXTRA_CFLAGS = -D"KBUILD_STR(s)=\#s" $(basename_flags) $(modname_flags) 
>in the a.makefile.
>and the a.makefile was included by b.makefile.
>when in the b.makefile,
>there is this command.
> $(CC) $(DEPS_OPT) $(CFLAGS) $(EXTRA_CFLAGS) -o $@ -c $< ;) 
>
>I had add "echo $(EXTRA_CFLAGS)" before this line;but returns NULL;
>
>so I suspicion the $(EXTRA_CFLAGS) hasn't been work.
>


You don't need to write this line by yourself, you just
need to provide a correct: obj-$(XXXXX) += your_module.o,
kbuild will automatically compile it with proper flags.
(If not, try CFLAGS_MODULE.)

If you insist to do this, I think you can just append
-D"KBUILD_MODNAME=your_module" to that line by hand.

Hope this helps.
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