HL SDK 2.3 (steam updated, Bots-United internal version) consider this a basic running version, it's neither official nor claiming to be complete, it just a matter of fact, that compiling against the multiplayer subdirectory wokrs for compiling bots in linux. included: ./hlsdk-2.3-metamod-patched-rbupdated -> hlsdk2.3 from metamod.org updated with stuff Stefan metioned to me and overwritten with the updated_eiface.tgz (*note the readme is not so clear, i copied the files into multi and singleplayer as well as into two subdirs (for files Sequence.h + archtypes.h to /engine and /common). note: for a hlsdk with a working metamod and a sample bot source (hpb_bot) look for the file hl_bot_build.tar.bz2. Have fun :-) Onno Kreuzinger ok@bots-united.com (aka memed)