FindJNI does not auto-find on FreeBSD
_JNI_JAVA_DIRECTORIES_BASE
does not include FreeBSD paths:
/usr/local/openjdk12
/usr/local/openjdk11
/usr/local/openjdk8
/usr/local/openjdk7
_JNI_JAVA_DIRECTORIES_BASE
does not include FreeBSD paths:
/usr/local/openjdk12
/usr/local/openjdk11
/usr/local/openjdk8
/usr/local/openjdk7