SlackBuildsOrg/development/antlr2
..
antlr-2.7.7-DESTDIR.patch
antlr-2.7.7-gcc-includes.patch
antlr2.info
antlr2.SlackBuild
README
slack-desc

ANTLR (ANother Tool for Language Recognition) is a powerful parser
generator for reading, processing, executing, or translating
structured text or binary files.

Optional dependencies are jdk/openjdk8/zulu-openjdk8 and mono (to
enable Java and C# support). C++ and Python are enabled by
default.

It is safe to install alongside libantlr3c.