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Message-ID: <004101bfec19$55b31340$2a2b7a35@bln.rt.daimlerchrysler.com>
From: "Horst Burmeister" <Horst DOT Burmeister AT DaimlerChrysler DOT com>
To: <cygwin AT sourceware DOT cygnus DOT com>
Subject: still help needed regarding  DLL for JNI
Date: Wed, 12 Jul 2000 17:52:06 +0200
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Hello all,

my task:=20
I have an UNIX-based C++ application that is used via a shared-object =
library=20
and JNI in Java on a Unix machine.
Now I want to make a dll library from this application using cygwin gnu =
tools=20
and use this dll using JNI in Java under NT.

To test this way of porting the software to NT I started with a little =
example.
So I wrote a small C programm, printing "Hello World" (not very witty, I =
know),=20
adding "__declspec(dllexport)" before the native function.=20
I compiled the file using "gcc -c theNativeMethod.c <more compiler =
flags>"

my problem:
Then I tried (as suggested by Carl Thompson, using cygwin1.1.2) to get =
the dll:
    "gcc -Wl,--out-implib,libNative.import.a -shared -o libNative.dll =
theNativeMethod.o"

This results in the following messages:
    Creating library file: libNative.import.a        (sounds good so far =
;-)
    bfd_close: libNative.import.a Invalid operation
    collect2: ld returned 1 exit status

I am really in despair! I am quite new to all this stuff.=20
I have no real experience, neither in C++ , nor NT programming.
So any suggestions are really welcome!

Horst

Horst DOT Burmeister AT daimlerchrysler DOT com or
Horst DOT Burmeister AT berlin DOT de


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