This is my mirror of the current tree:
Code:
me@here:~$ ls ./slackware64-current/slackware64/l/SDL*.txz
./slackware64-current/slackware64/l/SDL2-2.0.16-x86_64-1.txz ./slackware64-current/slackware64/l/SDL2_mixer-2.0.4-x86_64-5.txz
./slackware64-current/slackware64/l/SDL2_gfx-1.0.4-x86_64-3.txz ./slackware64-current/slackware64/l/SDL2_net-2.0.1-x86_64-4.txz
./slackware64-current/slackware64/l/SDL2_image-2.0.5-x86_64-3.txz ./slackware64-current/slackware64/l/SDL2_ttf-2.0.15-x86_64-3.txz
me@here:~$ ls ./slackware64-current/slackware64/l/sdl*.txz
./slackware64-current/slackware64/l/sdl-1.2.15-x86_64-12.txz
Looks like it's been added since 14.2.