+# Java Virtual Machine invocation API and others services from the JNI C API
+#
+# Users of this module and the Java FFI, on desktop computers, must define three environment variables:
+# * `JAVA_HOME` points to the installation folder of the target Java VM.
+# This folder should contain the JNI header file `include/jni.h`.
+# e.g. `/usr/lib/jvm/default-java` on Debian Jessie.
+# * `JNI_LIB_PATH` points to the folder with `libjvm.so`.
+# e.g. `/usr/lib/jvm/default-java/jre/lib/amd64/server/` on Debian Jessie.
+# * `LD_LIBRARY_PATH` has the path to the folder with `libjvm.so`.
+# It's the same value as `JNI_LIB_PATH` but `LD_LIBRARY_PATH` is a colon separated list
+# which may contain other paths.