From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (qmail 7923 invoked by alias); 22 Oct 2011 20:17:35 -0000 Received: (qmail 7914 invoked by uid 22791); 22 Oct 2011 20:17:34 -0000 X-SWARE-Spam-Status: No, hits=-1.8 required=5.0 tests=AWL,BAYES_00,RP_MATCHES_RCVD,SPF_HELO_PASS X-Spam-Check-By: sourceware.org Received: from lo.gmane.org (HELO lo.gmane.org) (80.91.229.12) by sourceware.org (qpsmtpd/0.43rc1) with ESMTP; Sat, 22 Oct 2011 20:17:19 +0000 Received: from list by lo.gmane.org with local (Exim 4.69) (envelope-from ) id 1RHi0L-0006J6-Gk for cygwin@cygwin.com; Sat, 22 Oct 2011 22:17:17 +0200 Received: from fixed-203-69-24.iusacell.net ([189.203.69.24]) by main.gmane.org with esmtp (Gmexim 0.1 (Debian)) id 1AlnuQ-0007hv-00 for ; Sat, 22 Oct 2011 22:17:17 +0200 Received: from r.berber by fixed-203-69-24.iusacell.net with local (Gmexim 0.1 (Debian)) id 1AlnuQ-0007hv-00 for ; Sat, 22 Oct 2011 22:17:17 +0200 To: cygwin@cygwin.com From: =?ISO-8859-1?Q?Ren=E9_Berber?= Subject: Re: g++ linker problem with libcygwin.a Date: Sat, 22 Oct 2011 20:17:00 -0000 Message-ID: References: Mime-Version: 1.0 Content-Type: text/plain; charset=ISO-8859-1 Content-Transfer-Encoding: quoted-printable User-Agent: Mozilla/5.0 (Windows; U; Windows NT 5.1; en-US; rv:1.8.1.19) Gecko/20081209 Lightning/0.9 Thunderbird/2.0.0.19 Mnenhy/0.7.6.0 In-Reply-To: X-IsSubscribed: yes Mailing-List: contact cygwin-help@cygwin.com; run by ezmlm Precedence: bulk List-Id: List-Subscribe: List-Archive: List-Post: List-Help: , Sender: cygwin-owner@cygwin.com Mail-Followup-To: cygwin@cygwin.com X-SW-Source: 2011-10/txt/msg00443.txt.bz2 On 10/22/2011 2:18 PM, Philipp Kraus wrote: > I use Cygwin with g++ for compiling my source codes and on some codes I > get the error: >=20 > /usr/lib/gcc/i686-pc-cygwin/4.5.3/../../../libcygwin.a(libcmain.o):(.text= +0xa9): > undefined reference to `_WinMain@16' [snip] That means the linking is being done for a GUI application. I guess you wanted to build a console application, so you should learn what these options for the linker mean: -Wl,-subsystem,console -Wl,-subsystem,windows There are equivalent options used with the compiler g++, I think they are: -mconsole -mwindows In general there are many options that apply only to Windows builds, for instance building Qt GUI applications I use these for the linker: -Wl,-enable-stdcall-fixup -Wl,-enable-auto-import -Wl,-enable-runtime-pseudo-reloc -Wl,-as-needed but they are not for solving linking errors, just to quiet the warnings, and try to optimize the result. --=20 Ren=E9 Berber -- Problem reports: http://cygwin.com/problems.html FAQ: http://cygwin.com/faq/ Documentation: http://cygwin.com/docs.html Unsubscribe info: http://cygwin.com/ml/#unsubscribe-simple