Dynamic module loading problem

[Francesco Santini <rincewind@...>]

Hello all,

I'm having a problem with binary module loading under linux x64. I have 
to disclose that I am using LuaJIT, but I think the problem I'm having 
is more general.

My setup is the following: a program (that is provided to me as-is) is 
dynamically loading a .so library (written by me) that contains the Lua 
VM (linked dynamically, but I also tried statically). My .so file wants 
to load a binary module (which, when loaded from command-line, works fine).

At this point, the "require" fails with the error "unresolved symbol: 
lua_gettop". Other modules give other lua-related unresolved symbols.

I have to point out that with a previous version of the main program 
this procedure used to work fine.

I read that I should enable the option -Wl,-E at linking, which I did 
for my .so file, and in fact my .so file does export all the correct lua 
symbols (as confirmed by nm), but that doesn't help. Is the main program 
supposed to by compiled with -Wl,-E? Provided that I have no control 
over how that program is linked, is there a workaround?

I guess linking lua with the module would help, but I would like to 
avoid that if possible.

Thanks in advance!

Francesco