These are the binaries for OS/2.
You will need a copy of the following packages installed:
SDL2, SDL2_image, SDL2_net, SDL2_image
libc, libcx, libgcc, libstdc++ >= 9.2.0
libvorbis, libogg, fluidsynth-libs, flac
readline zlib
If you use yum, most of the dependencies will be pulled in automatically.
Full Changelog: https://github.com/josch1710/prboom-plus-os2/commits/v2.6.66a-os2