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: Wed, 11 Oct 2000 23:19:48 -0400 From: Jason Tishler To: Venkat Iyer Cc: cygwin@sourceware.cygnus.com Subject: Re: Exporting symbols from an executable Message-ID: <20001011231948.A1023@OLMY> References: <14819.48654.198000.271875@gargle.gargle.HOWL> Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline User-Agent: Mutt/1.2.5i In-Reply-To: <14819.48654.198000.271875@gargle.gargle.HOWL>; from venkat@comit.com on Tue, Oct 10, 2000 at 06:10:38PM -0700 Organization: Dot Hill Systems Corp. Venkat, On Tue, Oct 10, 2000 at 06:10:38PM -0700, Venkat Iyer wrote: > I've read everything I could (including libtool, dlltool, gcc, ld > documentation, cygwin archives, and google and alltheweb searches), > and still haven't managed to make this work. > > I want to export symbols from an executable, so that they can be used > to resolve symbols at run time from dlopen'ed libraries. I tried to get your small example to work but unfortunately, I was unsuccessful. However, I can point out two things that I think will be useful: 1. When I use MS's dumpbin /exports on the a.exe produced from your build procedure, I noticed that f1 was NOT exported. 2. I suggest that you examine how PostgreSQL 7.0.2 builds postgres.exe and pgplsql.dll. Their procedure enables postgres.exe to export symbols that are used by pgplsql.dll which is eventually dlopen'd into postgres.exe (if the DBA enables the PL procedural language). Although, the build procedure is somewhat convoluted and uses dlltool/dllwrap instead of gcc directly, it does produce an executable that exports symbols. You can find the PostgreSQL source at: ftp://postgresql.readysetnet.com/pub/postgresql/v7.0.2/postgresql-7.0.2.tar.gz and a PostgreSQL build/install howto at: http://people.freebsd.org/~kevlo/postgres/portNT.html BTW, does anyone know how to dump the exported symbols of a DLL/EXE using one of the binutils tools? That is, without resorting to using MS's dumpbin. Jason -- Jason Tishler Director, Software Engineering Phone: +1 (732) 264-8770 x235 Dot Hill Systems Corporation 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? Send a message to cygwin-unsubscribe@sourceware.cygnus.com