Mailing-List: contact cygwin-help@sourceware.cygnus.com; run by ezmlm List-Subscribe: List-Archive: List-Post: List-Help: , Sender: cygwin-owner@sources.redhat.com Delivered-To: mailing list cygwin@sources.redhat.com Date: Fri, 13 Apr 2001 18:08:14 -0400 From: Jason Tishler To: Michael Lemke Cc: cygwin@cygwin.com, Pgsql-Ports Subject: Re: Postgres 7.1RC4 ecpg can't find sqlca Message-ID: <20010413180814.U212@dothill.com> Mail-Followup-To: Michael Lemke , cygwin@cygwin.com, Pgsql-Ports References: <14oAi6-19LMiuC@fwd03.sul.t-online.com> Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline User-Agent: Mutt/1.2.5i In-Reply-To: <14oAi6-19LMiuC@fwd03.sul.t-online.com>; from lemkemch@t-online.de on Fri, Apr 13, 2001 at 11:02:23PM +0200 Organization: Dot Hill Systems Corp. Michael, On Fri, Apr 13, 2001 at 11:02:23PM +0200, Michael Lemke wrote: > With the latest postgres release that came lately with cygwin I made my > very first attempt at writng an ESQL program (actually, at the moment it > is just something I dowloaded). Now when I link it can't find sqlca: > > michael> gcc -I /usr/include/postgresql/ esql.c -lecpg -lpq > /f/cygwin~1/tmp/ccbnOeiG.o(.text+0x203):esql.c: undefined reference to `sqlca' > /f/cygwin~1/tmp/ccbnOeiG.o(.text+0x292):esql.c: undefined reference to `sqlca' > collect2: ld returned 1 exit status > > ecpg made the declaration of sqlca > > extern struct sqlca sqlca; I believe that the above is a bug in sqlca.h. My WAG (without actually trying this) is that the above should be replaced by the following: #ifdef __CYGWIN__ extern __declspec(dllimport) struct sqlca sqlca; #else extern struct sqlca sqlca; or by #ifdef __CYGWIN__ extern DLLIMPORT struct sqlca sqlca; #else extern struct sqlca sqlca; if c.h can be safely included. > I recompiled postgres and skipped stripping of the libraries. Then I find > sqlca in ecpg.dll: > > michael> nm /usr/bin/ecpg.dll | grep sqlca > c0586864 T _init_sqlca > c0587000 D _sqlca > c05870b0 d _sqlca_init Don't worry sqlca *is* exported from ecpg.dll: $ objdump -p /usr/bin/ecpg.dll | fgrep sqlca [ 28] init_sqlca [ 29] sqlca > but not in libecpg.a: > > michael> nm /usr/lib/libecpg.a | grep sqlca > 00000000 I __imp__sqlca > 00000000 I __imp__init_sqlca > 00000000 T _init_sqlca Actually, sqlca *is* in the import library but it is called "__imp__sqlca" as it should be. Does changing your sqlca.h as above fix your problem. If so, then I will submit a patch to the pgsql-ports mailing list. Are there other ESQL related symbols that need the __declspec(dllimport) attribute too? Jason -- Jason Tishler Director, Software Engineering Phone: +1 (732) 264-8770 x235 Dot Hill Systems Corp. Fax: +1 (732) 264-8798 82 Bethany Road, Suite 7 Email: Jason.Tishler@dothill.com Hazlet, NJ 07730 USA WWW: http://www.dothill.com -- Want to unsubscribe from this list? Check out: http://cygwin.com/ml/#unsubscribe-simple