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Bug#185933: marked as done (libc6-dev: sys/io.h disappeared on ppc)

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and subject line Bug#185933: libc6-dev: sys/io.h disappeared on ppc
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Received: (at submit) by bugs.debian.org; 23 Mar 2003 02:02:48 +0000
>From dilinger@voxel.net Sat Mar 22 20:02:48 2003
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From: Andres Salomon <dilinger@voxel.net>
To: Debian Bug Tracking System <submit@bugs.debian.org>
Subject: libc6-dev: sys/io.h disappeared on ppc
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Package: libc6-dev
Version: 2.3.1-15
Severity: normal

Somewhere between -14 and -15, /usr/include/sys/io.h seems to have
disappeared for ppc (and possibly other archs).

On an i386 machine:
dilinger@pinky:~$ dpkg -L libc6-dev|grep "sys/io.h" || echo "nada."

On a ppc machine:
dilinger@nrop:~/gst-plugins-0.6.0.bak$ dpkg -L libc6-dev|grep "sys/io.h" || echo "nada."

I encountered a problem w/ missing sys/io.h while attempting to build
gst-plugins with -15:

In file included from qcam-lib.c:47:
 qcam-os.c:38:20: sys/io.h: No such file or directory
 qcam-lib.c: In function `qc_scan':
 qcam-lib.c:743: warning: comparison is always true due to limited range
 of data type
 make[4]: *** [libgstqcam_la-qcam-lib.lo] Error 1

Note that it builds just fine w/ -14:


-- System Information:
Debian Release: testing/unstable
Architecture: powerpc
Kernel: Linux nrop 2.4.20-ben7 #15 Sat Mar 1 15:37:39 EST 2003 ppc

Versions of packages libc6-dev depends on:
ii  libc6                         2.3.1-15   GNU C Library: Shared libraries an

-- no debconf information

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Date: Fri, 28 Mar 2003 23:54:30 +0900
Message-ID: <80r88rv8wp.wl@oris.opensource.jp>
From: GOTO Masanori <gotom@debian.or.jp>
To: Andres Salomon <dilinger@voxel.net>
Cc: GOTO Masanori <gotom@debian.or.jp>, 185933-done@bugs.debian.org
Subject: Re: Bug#185933: libc6-dev: sys/io.h disappeared on ppc
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At 27 Mar 2003 14:40:21 -0500,
Andres Salomon wrote:
> I have no problem w/ closing the bug; I've entered a bug in gstreamer's
> buzilla.

Thanks!  Now I close this bug.  But I remind (and maybe my todo) that
ppc has no sys/io.h.

> I would, however, like to see this documented somewhere, if
> it's not already done (maybe at the top of sys/*.h, a big fat "/*
> WARNING: this file does not exist on all architectures! */", or perhaps
> "#ifndef __<some symbol in asm/io.h>__ Warning: do not include this file
> directly!  Use the appropriate file in /usr/include/asm".)  But, I'm
> completely fine w/ you closing this.

Hmm, asm/io.h is kernel's header, and sys/io.h is glibc's header.  So
it can't be described as "some symbol in asm/io.h".  "this file does
not exist on all architectures" issue is caused by actually the
laziness of glibc, I think.

In addition, asm/io.h is normally provided, but it's also ok not to
exist (because it's for user convenient header to use IO directly, but
indeed I can't imagine it's not provided)...

-- gotom

> On Thu, 2003-03-27 at 09:14, GOTO Masanori wrote:
> > Hi,
> > 
> > At 23 Mar 2003 17:48:52 -0500,
> > Andres Salomon wrote:
> > > 
> > > Indeed:
> > > 
> > > ./sys/qcam/qcam-os.c:#include <sys/io.h>
> > > ./sys/qcam/qcam-Linux.c:#include <sys/io.h>
> > > 
> > > This appears to be some sort of quickcam driver (or something that
> > > prods i/o addresses directly).  I guess it should be using asm/io.h.
> > > It's using functions/macros like inb(), outb(), etc.  I shall follow
> > > up w/ gstreamer upstream on this.
> > 
> > Well, please do that.  If quickcam interface is the part of your
> > application, then unless architecture non-specific way is provided
> > from kernel driver, it becomes architecture dependend package...
> > 
> > So how to deal with this bug?  Exactly sys/io.h is not provided on
> > powerpc, but I think it does not cause your program; moreover, if the
> > sane non-architecture dependent program does not need to include
> > sys/io.h...  Do you think about this bug, and should we act about this
> > bug?

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