From owner-freebsd-current@FreeBSD.ORG  Fri Aug 24 13:20:13 2012
Return-Path: <owner-freebsd-current@FreeBSD.ORG>
Delivered-To: current@freebsd.org
Received: from mx1.freebsd.org (mx1.freebsd.org [69.147.83.52])
	by hub.freebsd.org (Postfix) with ESMTP id 9BEBD106566C;
	Fri, 24 Aug 2012 13:20:13 +0000 (UTC)
	(envelope-from dimitry@andric.com)
Received: from tensor.andric.com (cl-327.ede-01.nl.sixxs.net
	[IPv6:2001:7b8:2ff:146::2])
	by mx1.freebsd.org (Postfix) with ESMTP id 58B448FC17;
	Fri, 24 Aug 2012 13:20:13 +0000 (UTC)
Received: from [192.168.0.6] (spaceball.home.andric.com [192.168.0.6])
	(using TLSv1 with cipher DHE-RSA-CAMELLIA256-SHA (256/256 bits))
	(No client certificate requested)
	by tensor.andric.com (Postfix) with ESMTPSA id D93895C59;
	Fri, 24 Aug 2012 15:20:11 +0200 (CEST)
Message-ID: <50377F8F.8000005@andric.com>
Date: Fri, 24 Aug 2012 15:20:15 +0200
From: Dimitry Andric <dimitry@andric.com>
User-Agent: Mozilla/5.0 (Windows NT 6.1; WOW64;
	rv:15.0) Gecko/20120815 Thunderbird/15.0
MIME-Version: 1.0
To: fluffy@FreeBSD.org
References: <5036FB4E.4080407@fluffy.khv.ru> <50373763.50608@andric.com>
	<50377C8A.40000@fluffy.khv.ru>
In-Reply-To: <50377C8A.40000@fluffy.khv.ru>
Content-Type: text/plain; charset=UTF-8; format=flowed
Content-Transfer-Encoding: quoted-printable
Cc: Dima Panov <fluffy@fluffy.khv.ru>, current@freebsd.org
Subject: Re: build error at rpc code
X-BeenThere: freebsd-current@freebsd.org
X-Mailman-Version: 2.1.5
Precedence: list
List-Id: Discussions about the use of FreeBSD-current
	<freebsd-current.freebsd.org>
List-Unsubscribe: <http://lists.freebsd.org/mailman/listinfo/freebsd-current>, 
	<mailto:freebsd-current-request@freebsd.org?subject=unsubscribe>
List-Archive: <http://lists.freebsd.org/pipermail/freebsd-current>
List-Post: <mailto:freebsd-current@freebsd.org>
List-Help: <mailto:freebsd-current-request@freebsd.org?subject=help>
List-Subscribe: <http://lists.freebsd.org/mailman/listinfo/freebsd-current>,
	<mailto:freebsd-current-request@freebsd.org?subject=subscribe>
X-List-Received-Date: Fri, 24 Aug 2012 13:20:13 -0000

On 2012-08-24 15:07, Dima Panov wrote:
> 24.08.2012 19:12, Dimitry Andric =D0=BF=D0=B8=D1=88=D0=B5=D1=82:
=2E..
>> You are most likely setting CPP as follows:
>>
>>    CPP=3Dclang -E
>>
>> Don't do that, use the following instead:
>>
>>    CPP=3Dclang-cpp
>>
>> If there is no clang-cpp symlink in /usr/bin yet, just make it manuall=
y
>> for now.  It will also be created by installworld.
>
> Oh, indeed. Thanks for advice.
> However, why such different results in preprocessor invocation style?

When you invoke either clang or gcc with -E, files with unknown
extensions are not preprocessed, and considered to be linker input
files.

When you invoke clang-cpp or cpp, files with unknown extensions are
considered to be C instead.

Since our RPC-related files use the .x extension, -E doesn't work as
expected, and the resulting files will give a compile error later on.