loading DLLs created with Cygwin into Sun JDK

[Marcus G. Daniels]

I'm having a problem getting DLLs compiled with Cygwin to load into Sun 
JDK 1.4.1.  In the past this has worked, so I hope this is fixable 
without too much work.

Here's an example.  Take a simple Java Native Interface method like this:

$ cat jniTest.c
void Java_Test_test () { printf ("test\n");}
And compile it like so:

gcc -shared -o jniTest.dll jniTest.c

Also needed is the Java-side file:

public class Test {
  public native void test ();
  public static void main (String args[]) {
    Test test = new Test ();
    System.out.println ("loading jniTest");
    System.loadLibrary ("jniTest");
    System.out.println ("calling native method");
    test.test ();
    System.out.println ("success");
  }
}
Compiled it like so from a Cygwin terminal (replace 
/cygdrive/i/j2sdk1.4.1_02 as appropriate):

$ /cygdrive/i/j2sdk1.4.1_02/bin/javac Test.java

Now run it, you should see it print "loading jniTest", but nothing more.

$ CLASSPATH=. /cygdrive/i/j2sdk1.4.1_02/bin/java Test

In contrast, relink the DLL, but not using "-mno-cygwin":

$ gcc -mno-cygwin -shared -o jniTest.dll jniTest.c
$ CLASSPATH=. /cygdrive/i/j2sdk1.4.1_02/bin/java Test
Now it should print:

loading jniTest
calling native method
test
success


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