Looks like a parent pom was missed when breaking up the project. I am getting this error when including javacl-core 1.0-SNAPSHOT.
Failed to collect dependencies at com.nativelibs4java:javacl-core:jar:1.0-SNAPSHOT:
Failed to read artifact descriptor for com.nativelibs4java:javacl-core:jar:1.0-SNAPSHOT:
Could not find artifact com.nativelibs4java:nativelibs4java-parent:pom:1.9-SNAPSHOT in sonatype-snapshots (https://oss.sonatype.org/content/repositories/snapshots/)