linux-kernel - Re: [patch] linux/{socket,stat}.h: change __GLIBC__ cruft to __KLIBC_

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Date:	Wed, 02 Jan 2008 10:16:55 -0800
From:	"H. Peter Anvin" <hpa@...nel.org>
To:	Mike Frysinger <vapier@...too.org>
CC:	Adrian Bunk <bunk@...nel.org>,
	Andrew Morton <akpm@...ux-foundation.org>,
	LKML <linux-kernel@...r.kernel.org>
Subject: Re: [patch] linux/{socket,stat}.h: change __GLIBC__ cruft to __KLIBC__

Mike Frysinger wrote:
>>>
>>> -#if defined(__KERNEL__) || !defined(__GLIBC__) || (__GLIBC__ < 2)
>>> +#if defined(__KERNEL__) || defined(__KLIBC__)
>>> ...
>> This changes the semantics from "!glibc" to "klibc".
> 
> that's the point
> 
>> I'm a bit worried that such changes might break some of the other
>> libc's people use on Linux.
> 
> such libc's are broken and it isnt the kernel's problem to cater to broken 
> libc's.  the problem is that these headers are breaking things *now* for 
> valid libc's that are not glibc.  removal of __GBLIC__ was already accepted 
> once but reverted for klibc.
> -mike

Either of these really is wrong... it's the userspace which should ask 
for what should be imported; the kernel shouldn't hard-code which libcs 
want what.

I just posted a patch to the netdev list which splits the top of 
<linux/socket.h> out into <linux/sockaddr.h>, userspace can choose to 
include one or the other.

	-hpa
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