X-Recipient: archive-cygwin AT delorie DOT com X-SWARE-Spam-Status: No, hits=-0.3 required=5.0 tests=AWL,BAYES_50,DKIM_SIGNED,DKIM_VALID,DKIM_VALID_AU,RCVD_IN_DNSWL_NONE,SARE_SUB_OBFU_Q0,TW_BP,TW_LP X-Spam-Check-By: sourceware.org X-Yahoo-SMTP: mjD.OBqswBAPbVUxYJaYPvc61jLEnpq8VnBwJGdbEJOPA9xw Message-ID: <4C914371.3050701@sbcglobal.net> Date: Wed, 15 Sep 2010 22:06:41 +0000 From: Greg Chicares User-Agent: Mozilla/5.0 (Windows; U; Windows NT 5.1; en-US; rv:1.9.2.8) Gecko/20100802 Thunderbird/3.1.2 MIME-Version: 1.0 To: cygwin AT cygwin DOT com Subject: Re: Compiling C++ code using libpq-fe.h (PostgreSQL library) in Cygwin References: <4C913FB4 DOT 90007 AT arcor DOT de> In-Reply-To: <4C913FB4.90007@arcor.de> Content-Type: text/plain; charset=ISO-8859-15 Content-Transfer-Encoding: 7bit X-IsSubscribed: yes Mailing-List: contact cygwin-help AT cygwin DOT com; run by ezmlm List-Id: List-Subscribe: List-Archive: List-Post: List-Help: , Sender: cygwin-owner AT cygwin DOT com Mail-Followup-To: cygwin AT cygwin DOT com Delivered-To: mailing list cygwin AT cygwin DOT com On 2010-09-15 21:50Z, Julia Jacobson wrote: > > When trying to compile C++ code using PostgreSQL's libpq-fe.h by the command "g++ > -I/usr/include -L/lib -lpq my_program.cpp", I get error messages like "undefined > reference to '_PQconnectdb'. Assuming that '-lpq' provides the unresolved symbol, move it after the file that requires it: g++ -I/usr/include my_program.cpp -L/lib -lpq See the details under '-l' in 'man ld'. -- 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