MingW GCC sorry, unimplemented: 64-bit mode not compiled in #include <jni.h>

Question

I am trying to compile a C program which uses Java's JNI header jni.h, but I am getting the following error:

sorry, unimplemented: 64-bit mode not compiled in #include <jni.h>

I am using the 64 bit JDK, so I don't understand why this is happening.

Answer 1

The problem turned out to be that I was using the 32-bit version of MinGW GCC. On updating to the 64-bit compilers, the error went away.