Mailing-List: contact cygwin-help AT cygwin DOT com; run by ezmlm 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 From: ejfried AT ca DOT sandia DOT gov (friedman_hill ernest j) Message-Id: <200301171627.IAA03968@ca.sandia.gov> Subject: Re: Using cygwin and JAVA/JNI In-Reply-To: <5.2.0.9.2.20030117080839.029861d0@pop3.cris.com> from Randall R Schulz at "Jan 17, 2003 08:11:39 am" To: cygwin AT cygwin DOT com Date: Fri, 17 Jan 2003 08:27:23 -0800 (PST) MIME-Version: 1.0 Content-Type: text/plain; charset=US-ASCII Content-Transfer-Encoding: 7bit Randall is usually 100% right about everything, but here he's actually not. I haven't done it in a long time, but I've certainly written JNI libraries with cygwin -- and in fact, used some fairly cygwin specific features in doing so (my JNI library explicitly used dlopen() to open another library, as I recall, and it all worked; and furthermore, much of my library was written in C++, but the JNI entry points were exported as 'extern "C".') I was amazed and thrilled when it all worked. When I did this, Mumit Khan's web page on the topic was invaluable, but cygwin has changed a lot since then, so I'm sure the information is out of date. Anyway, you might start by looking at the JNI links halfway down this page: http://www.xraylith.wisc.edu/~khan/software/gnu-win32/ I think Randall R Schulz wrote: > Gilles, > > I don't believe the ABI (application binary interface) used by the > Microsoft compilers is compatible with that used by GCC and hence the Sun > JVM, being compiled by the Microsoft tools, cannot access GCC-compiled > libraries via JNI. > > Randall Schulz > > > At 06:41 2003-01-17, gilles BOURGEOIS wrote: > >hello > > > >I wonder if it is possible to use JNI upon a DLL .i.e a shared libray like > >.so file generated with gcc, without the mno-cygwin option. (my lib uses > >IPC SYSTEM V, that is why I rely on the cygwin and cygipc libraries) I am > >not a newbie with java/jni or gcc, but mixing all of them seems to crash > >the JVM. Of course, It works if the library is generated with gcc under > >linux but if executing the whole program (JVM instantiate) under cygwin, > >it fails. Any one ever performed such a tricky architecture? thanks > > > >gilles > > > -- > Unsubscribe info: http://cygwin.com/ml/#unsubscribe-simple > Bug reporting: http://cygwin.com/bugs.html > Documentation: http://cygwin.com/docs.html > FAQ: http://cygwin.com/faq/ > --------------------------------------------------------- Ernest Friedman-Hill Distributed Systems Research Phone: (925) 294-2154 Sandia National Labs FAX: (925) 294-2234 PO Box 969, MS 9012 ejfried AT ca DOT sandia DOT gov Livermore, CA 94550 http://herzberg.ca.sandia.gov -- Unsubscribe info: http://cygwin.com/ml/#unsubscribe-simple Bug reporting: http://cygwin.com/bugs.html Documentation: http://cygwin.com/docs.html FAQ: http://cygwin.com/faq/