I am trying to compile, from the SUN JNI tutorial the program invoke.c, and I am having the following issues:

invoke.c: In function `main':
invoke.c:34: warning: passing arg 2 of `JNI_CreateJavaVM' from incompatible pointer type
Undefined first referenced
symbol in file
JNI_CreateJavaVM /ora/app/tmp/ccA9jdoW.o (symbol belongs to implicit dependency /usr/java1.2/jre/lib/sparc/libjvm.so)
JNI_GetDefaultJavaVMInitArgs /ora/app/tmp/ccA9jdoW.o (symbol belongs to implicit dependency /usr/java1.2/jre/lib/sparc/libjvm.so)
ld: fatal: Symbol referencing errors. No output written to a.out
collect2: ld returned 1 exit status

Could someone please help me with this; I would greatly appreciate it.