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Date: Sat, 21 Aug 2004 15:45:38 -0400
From: Lei Yang <leiyang@nec-labs.com>
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To: Sam Ravnborg <sam@ravnborg.org>
CC: Kernel Newbies Mailing List <kernelnewbies@nl.linux.org>,
       linux-kernel <linux-kernel@vger.kernel.org>
Subject: Re: Problems compiling kernel modules
References: <4127A15C.1010905@nec-labs.com> <20040821214402.GA7266@mars.ravnborg.org>
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Sam Ravnborg wrote:
> On Sat, Aug 21, 2004 at 03:24:12PM -0400, Lei Yang wrote:
> 
>>Hi all,
>>
>>I was trying to compile a kernel module with kbuild. The module 'test.c' 
>>include a header file 'fred.h' and there is a "#include <stdio.h>" in 
>>'fred.h'.
>>
>>Makefile looks like:
>>
>>------------------------------------------------------------------------
>>ifneq ($(KERNELRELEASE),)
>>obj-m       := test.o
>>
>>else
>>KDIR        := /usr/src/linux
>>PWD         := $(shell pwd)
>>
>>default:
>>	$(MAKE) -C $(KDIR) SUBDIRS=$(PWD) modules
>>	
>>
>>clean:
> 
> For 2.6.7 (or 2.6.6) you do not need to specify your own clean: rule.
> 
> 
>>But upon compiling, there would be errors like this:
>>In file included from /home/lei/test.c:49:
>>/home/lei/fred.h:4:19: stdio.h: No such file or directory
> 
> The kernel does not provide you with a stdio.h header, so therefore you
> cannot find it neither use functionality from it.

You mean I can't use stdio.h at all?

But what if I really need to? Is there anything I can do?

> 	Sam