Mail Archives: cygwin/1998/05/21/02:52:26
Yep. Been there toiled with that.
When this happened to me, it was due to stripping the relocatable DLL.
This messes up the image.
The most complete fix:
1. Upgrade to egcs-1.0.2 for a better gcc.exe ... etc.
2. Upgrade to binutils-2.9 for a usable ld.exe ... etc.
If your NOT stripping the DLL than these steps may not solve your problem.
Look VERY carefully at the discussion/examples in the relocatable DLLs
section of the Cygnus web page. If you absorb that, you're there.
----------
> From: Andrew Mickish <mickish AT cmu DOT edu>
> To: gnu-win32 AT cygnus DOT com
> Subject: Java JNI with DLL from gcc
> Date: Tuesday, May 19, 1998 5:20 AM
>
> I followed Sun's JNI tutorial example at
>
>
http://java.sun.com/docs/books/tutorial/native1.1/stepbystep/index.html
>
> and tried to generate the native hello.dll file using Cygnus B19 and gcc
2.7.
> I had to change a couple of lines in jdk1.1.5/include/win32/jni_md.h
(changed
> jlong to be long instead of __int64, and JNIEXPORT to an empty #define
instead
> of a call to __declspec). After generating the DLL, running the Java
main
> program popped up a dialog box with:
>
> "The application or DLL E:\java\HelloWorld\hello.dll is not a valid
> Windows NT image. Please check this against your installation
diskette."
>
> The cygwin32 FAQ and archives talk about a five-step process, auxiliary
> initialization and cleanup files, and the WINAPI keyword, which I'm
hoping is
> more compexity than is needed.
>
> --Andrew Mickish
> http://www.andrew.cmu.edu/~am2q/
>
>
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