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With the Natural Native Interface it is currently necessary to copy the binary, which uses libnatural, into the bin folder of Natural. This is stated in the README from the sysexnni sample (/opt/softwareag/Natural/samples/sysexnni/readme.txt).
The reason this is necessary is that, for one, libnatural seems to locate the NATURAL.INI file relatively to the binary location, e.g. ../etc/NATURAL.INI. This was tested with tracing the Linux system calls (attached screenshot).
This limitation might not be so bad when creating a C-program that consumes libnatural.
When creating an application that consumes libnatural but runs on a runtime like the JVM then the only way to use the Natural Native Interface is to either statically ahead of time compile the Java code or copy a Java runtime into /opt/softwareag/Natural so that you can call /opt/softwareag/Natural/bin/java -jar /my/app.jar
Copying a whole JRE into the installation of Natural is very dirty and not desired.
It would be really helpful if libnatural (and libnatsec when using Natural Security) use NAT_HOME or similar environment variable to resolve their needed files.
