Trying to compile Lua code with luajit for openresty

[Siddharth Chhabra]

Hi

I have a large lua codebase which works perfectly fine.

The code is kept across a couple of directories for ease of use and management.

It also includes a couple of open source lua modules.

I am trying to follow the steps mentioned here - https://github.com/openresty/lua-nginx-module#statically-linking-pure-lua-modules

I used the code mentioned here to compile the lua code by luajit - 

https://stackoverflow.com/questions/11317269/how-to-compile-lua-scripts-into-a-single-executable-while-still-gaining-the-fas

for f in *.lua; do
    luajit -b $f `basename $f .lua`.o
done
ar rcus libmyluafiles.a *.o

And had a couple of questions:

1. After building the .a and trying to link it I am seeing errors like below

/buildroot/lua/lib/libluafiles.a(upstream_health.o):(.rodata+0x0): multiple definition of `luaJIT_BC_upstream_health'
/buildroot/lua/lib/libluafiles.a(upstream_health.o):(.rodata+0x0): first defined here
/usr/bin/ld: Warning: size of symbol `luaJIT_BC_upstream_health' changed from 2381 in /buildroot/lua/lib/libluafiles.a(upstream_health.o) to 1445 in 

This is happening since I have upstream_health.lua defined in 2 different folders and they  seem to be clashing.

1.a. Do I have to rename one of the files to something else for it to work (Doesnt luajit bytecode have the directory/module name in there for them to be distinguishable as 2 separate entities)?

On the above link it states that if I have to use a "foo.bar" in the require lua statement then I should be renaming that file to foo_bar.lua, so 

1.b. what should I do if the file already has an "_" in the name ?

1.c. Do I have to rename all the files in my directory structure and third party modules with "_" as opposed to directories ? 

1.d. And also rename filenames with "_" to a hypen so that luajit doesnt get confused?

2. Also once .a is properly linked with the resty module can I get rid of these directives 

#lua_package_path "/nginx/lua/?.lua;;";
#lua_package_cpath "/nginx/luac/?.so;;";

Any help or experience with this would be really appreciated.

Thanks