linux-kernel - Re: /usr/include/linux/errno.h:1:23: fatal error: asm/errno.h: No such file or directory

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Message-ID: <CAAJw_Zun1Ax1jf4C8wyfvHQHCo5gE869bjD3Ck1cRWuDkPr7bw@mail.gmail.com>
Date:	Sun, 16 Dec 2012 10:06:16 +0800
From:	Jeff Chua <jeff.chua.linux@...il.com>
To:	Al Viro <viro@...iv.linux.org.uk>
Cc:	lkml <linux-kernel@...r.kernel.org>
Subject: Re: /usr/include/linux/errno.h:1:23: fatal error: asm/errno.h: No
 such file or directory

On Sun, Dec 16, 2012 at 9:53 AM, Al Viro <viro@...iv.linux.org.uk> wrote:
> On Sun, Dec 16, 2012 at 09:39:01AM +0800, Jeff Chua wrote:
>> On Sun, Dec 16, 2012 at 9:28 AM, Al Viro <viro@...iv.linux.org.uk> wrote:
>> > On Sun, Dec 16, 2012 at 09:23:38AM +0800, Jeff Chua wrote:
>> >> How should the symbolic links be setup to compile the latest kernel?
>> >>
>> >>
>> >> Currently I had these links and kernels compiled fine until 2 days ago.
>> >>
>> >>          asm -> /usr/src/linux/include/uapi/asm-generic/
>> >>          asm-generic -> /usr/src/linux/include/uapi/asm-generic
>> >>          linux -> /usr/src/linux/include/uapi/linux
>> >
>> > What symlinks?  /usr/include/* should not contain any symlinks into
>> > the kernel source.  At all.
>>
>> Al,
>>
>> Oh, perhaps I'm having the right setup. Where should I get the kernel
>> headers.
>
> From your libc.  Which ought to have its own copies, normally coming from
> make headers_install in kernel source.  And yes, it had been that way
> for many years by now.  Userland should *not* blindly grab the kernel
> headers.
>
> Incidentally, your 'asm' is obviously bogus - the headers that should end
> up there ought to come from arch/<whatever>/include/uapi/asm (and _not_
> by pointing a symlink to it); yours points to the place where asm-generic
> ones ought to have been copied from.

Al,

Thanks for the pointers. Will try as what you suggested:)

Merry Christmas.

Jeff
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