Urgent: UnsatisfiedLinkError in Solaris 8

Question

Hi,
I am new to JNI stuff. I have a problem when loading the shared library. Here are the details:
I have a java class AuthenticateEngine.java - This class contains methods for authenticating the user against the Solaris system. This service is running as a RMI with security enabled. It is internally implemented using the PAM (Pluggable Authentication Module)
I have a C program AuthenticateImpl.c which calls the PAM module to verify the given user-id and password.
I am getting the following exception when I execute the AuthenticateEngine class.
Exception in thread "main" java.lang.UnsatisfiedLinkError: /mypath/libauthentication.so: ld.so.1: /usr/java1.3/j2sdk1_3_1_02/bin/../bin/sparc/native_threads/java: fatal: relocation error: file /mypath/libauthentication.so: symbol pam_chauthtok: referenced symbol not found
at java.lang.ClassLoader$NativeLibrary.load(Native Method)
at java.lang.ClassLoader.loadLibrary0(ClassLoader.java:1419)
at java.lang.ClassLoader.loadLibrary(ClassLoader.java:1343)
at java.lang.Runtime.loadLibrary0(Runtime.java:749)
at java.lang.System.loadLibrary(System.java:820)
at packagename.authenticateEngine.<clinit>(AuthenticateEngine.java:118)
The line 118 in AuthenticateEngine.java contains the System.loadLibrary("authentication"); inside the static block.
Compilation Details:
$ /usr/bin/javac -classpath . packagename/AuthenticateEngine.java
$ /usr/bin/javah -classpath . packagename.AuthenticateEngine
$ /usr/local/bin/gcc -G -I/usr/java/include -I/usr/java/include/solaris -o libauthentication.so AuthenticateImpl.c
I am doing the following to execute my class.
$ rmiregistry &
$ LD_LIBRARY_PATH=./ java -classpath . -Djava.security.policy=./java.policy packagename.AuthenticateEngine &
Can anyone help me ?
Thanks in advance,
Prem.

Answer 1

Thanks for the quick reply.
Yes i have included the header #include <security/pam_appl.h> for my PAM in my C program.
I am using pam_start(), pam_chauthtok() and other pam related APIs. Probably do i need to link the library libpam.so when i generate the libauthentication.so (my library) ? or do i need to specify the path of libpam.so somewhere ?
This is how i am generating my libauthentication.so:
/usr/local/bin/gcc -G -I/usr/java/include -I/usr/java/include/solaris -o libauthentication.so AuthenticateImpl.c
kr,
Prem.