Debian Bug report logs - #661440
libexplain FTBFS on Alpha: linux/ac/sys/types.h: No such file or directory

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Message #5 received at submit@bugs.debian.org (full text, mbox, reply):

From: Michael Cree <mcree@orcon.net.nz>

To: submit@bugs.debian.org

Subject: libexplain FTBFS on Alpha: linux/ac/sys/types.h: No such file or directory

Date: Mon, 27 Feb 2012 22:18:52 +1300

Source: libexplain
Version: 0.51.D001-1
Severity: normal
User: debian-alpha@lists.debian.org
Usertags: alpha
X-Debbugs-CC: debian-alpha@lists.debian.org

libexplain FTBFS on Alpha with the following:

libtool: compile:  gcc -Wall -g -O2 -Wall -Wextra -Wl,--as-needed -I. -c
libexplain/buffer/eio.c  -fPIC -DPIC -o libexplain/buffer/.libs/eio.o
In file included from libexplain/buffer/eio.c:22:0:
./libexplain/ac/fcntl.h:35:32: fatal error: linux/ac/sys/types.h: No
such file or directory

Full build log is available at:
http://buildd.debian-ports.org/status/fetch.php?pkg=libexplain&arch=alpha&ver=0.51.D001-1&stamp=1329468418

The compilation fails because of some trickery in the file
libexplain/ac/fcntl.h, namely:

#if defined(__alpha__) && defined(HAVE_LINUX_FCNTL_H)
#include <libexplain/ac/linux/types.h> /* Ubuntu Hardy needs this first */
/* This is very strange, but numerous tests fail if we use <fcntl.h>
   because is appears to have several incorrect macro definitions */
#include <linux/ac/sys/types.h>
#include <linux/fcntl.h>
#else

I'm not sure why a compilation path unique to Alpha is present but I
found the following in the libexplain changelog which seems relevant:

libexplain  (0.35.D006-1) unstable; urgency=low
* A build problem concerning <fcntl.h> has been fixed: it turns out that
on Liunux [sic] alpha <fcntl.h> has the wrong values for O_LARGEFILE and
O_DIRECTORY, and you must use <linux/fcntl.h> instead.

I find that comment somewhat mystifying as O_LARGEFILE is defined to be
0, which I believe to be correct as _all_ files are by default and by
design O_LARGEFILE, and O_DIRECTORY is defined to be 0100000 which is
the same as is in the linux kernel source.  (They may not be the same as
x86 which is not a problem.)

I ran a test build where I had commented out the Alpha specific code in
libexplain/ac/fcntl.h so it would use the standard code that every other
architecture uses and the compilation passed that point and went on for
a lot further until it failed with:

libtool: compile:  gcc -Wall -g -O2 -Wall -Wextra -Wl,--as-needed -I. -c
libexplain/iocontrol/tiocgetp.c  -fPIC -DPIC -o
libexplain/iocontrol/.libs/tiocgetp.o
libexplain/iocontrol/tiocgetp.c:31:5: error: invalid application of
'sizeof' to incomplete type 'struct sgttyb'

That is due to use of the TIOCGETP macro.  It appears that <termios.h>
only declares 'struct sgttyb' but does not define it so the sizeof
operator on struct sgttyb fails.  Struct sgttyb is defined in:

/usr/include/alpha-linux-gnu/asm/termios.h

but I haven't been able to work out why that is not being included.
It's getting late so I am filing the bug report at this stage.

Cheers
Michael.

Message #10 received at 661440@bugs.debian.org (full text, mbox, reply):

From: Andreas Beckmann <anbe@debian.org>

To: 661440@bugs.debian.org, 661440-submitter@bugs.debian.org

Subject: Re: libexplain FTBFS on Alpha: linux/ac/sys/types.h: No such file or directory

Date: Tue, 11 Nov 2014 20:12:51 +0100

On Mon, 27 Feb 2012 22:18:52 +1300 Michael Cree <mcree@orcon.net.nz> wrote:
> Source: libexplain
> Version: 0.51.D001-1

> I ran a test build where I had commented out the Alpha specific code in
> libexplain/ac/fcntl.h so it would use the standard code that every other
> architecture uses and the compilation passed that point and went on for

I have removed that special casing for alpha in my recent QA upload.

> a lot further until it failed with:
> libexplain/iocontrol/tiocgetp.c:31:5: error: invalid application of
> 'sizeof' to incomplete type 'struct sgttyb'
> 
> That is due to use of the TIOCGETP macro.  It appears that <termios.h>
> only declares 'struct sgttyb' but does not define it so the sizeof
> operator on struct sgttyb fails.  Struct sgttyb is defined in:
> 
> /usr/include/alpha-linux-gnu/asm/termios.h

Whatever. If someone provides a patch that makes libexplain work on
alpha, we can include it.


Andreas

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