From owner-freebsd-hackers  Wed Dec  9 08:36:02 1998
Return-Path: <owner-freebsd-hackers@FreeBSD.ORG>
Received: (from majordom@localhost)
          by hub.freebsd.org (8.8.8/8.8.8) id IAA00755
          for freebsd-hackers-outgoing; Wed, 9 Dec 1998 08:36:02 -0800 (PST)
          (envelope-from owner-freebsd-hackers@FreeBSD.ORG)
Received: from gvinpin.grad.kiev.ua (KievglavArhit-UTC-28k8.ukrtel.net [195.5.25.54])
          by hub.freebsd.org (8.8.8/8.8.8) with ESMTP id IAA00715
          for <hackers@freebsd.org>; Wed, 9 Dec 1998 08:35:50 -0800 (PST)
          (envelope-from Ruslan@Shevchenko.Kiev.UA)
Received: from Shevchenko.Kiev.UA (kulshedra [10.0.1.99])
	by gvinpin.grad.kiev.ua (8.8.7/8.8.7) with ESMTP id SAA15358
	for <hackers@freebsd.org>; Wed, 9 Dec 1998 18:33:49 +0200
Message-ID: <366EC309.4E81E900@Shevchenko.Kiev.UA>
Date: Wed, 09 Dec 1998 18:35:54 +0000
From: Ruslan Shevchenko <Ruslan@Shevchenko.Kiev.UA>
Reply-To: rssh@grad.kiev.ua
X-Mailer: Mozilla 4.07 [en] (X11; I; FreeBSD 3.0-CURRENT i386)
MIME-Version: 1.0
To: hackers@FreeBSD.ORG
Subject: inclusion of system headers.
Content-Type: text/plain; charset=koi8-r
Content-Transfer-Encoding: 7bit
Sender: owner-freebsd-hackers@FreeBSD.ORG
Precedence: bulk
X-Loop: FreeBSD.ORG


 Question:

   Are exists some reasons, for existing next situation:

A.h refer to something, including in B.h, but A.h not include B.h .

I think, this is design bug.

In FreeBSD such situation, at least with <sys/uio.h> and <sys/types.h>,
which breaks clear compiling of erlang  (which yesteday was releasing
as open source with NPL-style license).

<begin quote from erlang mail list:>

> -DHAVE_FINITE=3D1 -DHAVE_DIRENT_H=3D1 -DSTDC_HEADERS=3D1
-DHAVE_SYS_WAIT_=
...
> known-freebsd3.0/gzio.o -c
-I/usr/home/rssh/erlang/erlang-47.4.0/erts/sys=
> tem/emulator/zlib
/usr/home/rssh/erlang/erlang-47.4.0/erts/system/emulato=
> r/drv/gzio.c
> In file included from
/usr/home/rssh/erlang/erlang-47.4.0/erts/system/emu=
> lator/sys.unix/driver_int.h:30,
>                  from
/usr/home/rssh/erlang/erlang-47.4.0/erts/system/emu=
> lator/runtime/driver.h:30,
>                  from
/usr/home/rssh/erlang/erlang-47.4.0/erts/system/emu=
> lator/drv/gzio.c:29:
> /usr/include/sys/uio.h:88: parse error before `readv'
> /usr/include/sys/uio.h:88: warning: data definition has no type or
storag=

Wow, long output... :-)

Which seems to be the real cause of the error. The fix is to edit the
file erts/system/emulator/sys.unix/driver_int.h and add

#include <sys/types.h>

just before the inclusion of sys/uio.h. Thanks for trying it out!

<end quote>

P.S,  I doubted this message as misc bug-report.



To Unsubscribe: send mail to majordomo@FreeBSD.org
with "unsubscribe freebsd-hackers" in the body of the message