[tex-k] New tl build process: luatex libraries

[Peter Breitenlohner]

Hi Taco,

here a completely different point. I want to start building the lua*
libraries for luatex and obviously have to start with libs/lua51 (will
probably move this to texk/web2c/luatexdir/lua51).

Your current luatexlib.mk uses
 	luatarget=posix
 	ifeq ($(target),i386-mingw32)
 	  ifeq ($(host),i386-linux)
 	    luatarget = mingwcross
 	  else
 	    luatarget = mingw
 	  endif
 	else
 	ifeq ($(target),i386-linux)
 	  luatarget = posix
 	endif
 	endif

First a remark: the final "luatarget = posix" if $(target)=i386-linux is
certainly redundant.

Then a question: why "luatarget = mingwcross" only if $(host)=i386-linux? 
First probably as well for, e.g., i686-linux and then why not for all
cross-compilations?

Finally another question: the lua51/Makefile natively uses targets like
linux, macosx, etc. with various mechanisms for dynamic loading (that is
LUA_DL_DLOPEN, LUA_DL_DLL, LUA_DL_DYLD, or none of these in loadlib.c).

Is this functionality needed for luatex? Probably not since otherwise luatex
ought to use libdl or analogous. Correct?

Regards,
Peter