Mailing-List: contact cygwin-help@sourceware.cygnus.com; run by ezmlm List-Unsubscribe: List-Subscribe: List-Archive: List-Post: List-Help: , Sender: cygwin-owner@sourceware.cygnus.com Delivered-To: mailing list cygwin@sourceware.cygnus.com Date: Sat, 13 Nov 1999 16:12:13 -0700 (MST) From: Steve Jorgensen Message-Id: <199911132312.QAA21084@zen.alb.khoral.com> To: Cc: Subject: Re: Shared Libraries > I've been told that shared libraries under unix can be built with unresolved > externals. Thus, if I were to build a shared library with gcc under a > unix/cygwin system, I would not need a stub library file containing the > routines that I call within my library. > The vendor have me a header file and a Win32 library file (.lib) and nothing > else. The vendor states that under UNIX, no lib is needed. I can't figure > out how to correctly link my shared library as gcc under cygwin still > returns an "unresolved reference error". > I have a vendor-provided header (vendor.h) defining some structures and > functions. I compile my program like so: > gcc -c my_module.c -o my_module.o > gcc -shared -o my_module.so my_module.o > I then get an "unresolved reference" error for each function defined in > vendor.h that I call in my_module.c. > Thanks (in advance) a MILLION for any help! Under windows, all shared libraries need ALL symbols resolved at link time, so you'll need to link in the .lib you got from you're vender. Also, I don't think cygwin support traditional unix .so shared libraries. You have to create DLL's, which have a magic (curse?) all their own. They are considerably harder to create than Unix shared libraries, and have some extremely annoying limitations. Poke around on http://sourceware.cygnus.com/cygwin for more information on creating DLL's. The cygwin mailing list archives should have info too.. You're looking for information on DLL's, dllwrap, and dlltool. Steve ----------------------------------------------------------- Steven Jorgensen steve@khoral.com steve@haunt.com ------------------------------+---------------------------- Khoral Research Inc. | PHONE: (505) 837-6500 6200 Uptown Blvd, Suite 200 | FAX: (505) 881-3842 Albuquerque, NM 87110 | URL: http://www.khoral.com/ ----------------------------------------------------------- -- Want to unsubscribe from this list? Send a message to cygwin-unsubscribe@sourceware.cygnus.com