• Add sndio support [1]
• Remove ALSA from default options
• Switch to options helpers
• Move audio output options to their own option group
• Make OSS support an explicit option, so that it can be turned off
• Remove OGG option and make it mandatory: audio/libogg is already a dependency via audio/libvorbis
• Make the port simpler by not building the examples and not installing the example games (if necessary installing them can be done later in a separate port)
• Add LICENSE
• Fix WWW
• Allegro never directly links with libpng or libGLU; make them a build dependency only
• Reset maintainer

PR: 215838
Obtained from: OpenBSD [1]
Approved by: mat (mentor), maintainer timeout (5 months)
Differential Revision: https://reviews.freebsd.org/D11039