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Re: Cygwin/Java-JNI tutorial available (plus gcc question)
- From: Charles Wilson <cwilson at ece dot gatech dot edu>
- To: "David P. Caldwell" <inonit at inonit dot com>
- Cc: cygwin at cygwin dot com
- Date: Tue, 08 Jan 2002 15:48:58 -0500
- Subject: Re: Cygwin/Java-JNI tutorial available (plus gcc question)
- References: <JIEPJODHFFPGJDGMCPBEOEFACHAA.inonit@inonit.com>
David P. Caldwell wrote:
> I was having trouble figuring out how to build Java/JNI programs with
> Cygwin. There were a number of threads in the mailing list about it, and
> some were helpful, but it still took a great deal of slogging.
>
> After I got it working, I put a tutorial on the web
> (http://www.inonit.com/cygwin/) on how to do it.
>
> If you are an expert on these matters (and don't feel like reading the
> tutorial), one question came up. I was unable to link my examples into DLLs
> using gcc. (Or, more properly, I was able to link it into a DLL, but the
> Java virtual machine would invariably complain that the function it was
> looking for did not exist.) I ended up using LCC-Win32. There's some more
> information about what occurred (and my cygcheck -s output) at
> http://www.inonit.com/cygwin/jni/helloWorld/c.html.
I don't have Java installed on this machine so I can't test this myself.
But, try the following additional options to gcc:
-Wl,--export-all-symbols
If that doesn't work, then try again with the above option, but in addition:
-Wl,--add-stdcall-alias
Does any of that help?
--Chuck
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