Hi Taco! First of all, thanks for the rework of the zzlib stuff, now it is easy to compile luatex with external zlib libs/headers. Now there is the wish that we compile luatex also with the external lua (5.1) libs/headers. Ok, I tried it, but it doesn't work. My first try on Debian was to replace all references in the source code to ../../lua51/ to lua5.1 because the header files are found here in /usr/include/lua5.1 This worked out quite well (for luatex-api.c), but it stumbled at lua/texluac.c where you try to load several header files which are NOT shipped in our lua51 devel packages. I took a look into the original source and there is written: If you want to install Lua locally, then do "make local". This will create directories bin, include, lib, man, and install Lua there as follows: bin: lua luac include: lua.h luaconf.h lualib.h lauxlib.h lua.hpp lib: liblua.a man/man1: lua.1 luac.1 These are the only directories you need for development. So it seems that you use more than they assumed to be useful. Now the simple question: Do you plan to change this, is there a realistic chance that this can be achieved? (Note that is the start, next are all the other libs ;-) In any case thanks a lot and all the best Norbert ------------------------------------------------------------------------------- Dr. Norbert Preining Vienna University of Technology Debian Developer Debian TeX Group gpg DSA: 0x09C5B094 fp: 14DF 2E6C 0307 BE6D AD76 A9C0 D2BF 4AA3 09C5 B094 ------------------------------------------------------------------------------- GANGES (n. rare : colonial Indian) Leg-rash contracted from playing too much polo. (It is a little-known fact that Prince Charles is troubled by ganges down the inside of his arms.) --- Douglas Adams, The Meaning of Liff