This repo contains code to build an unpatched Lua 5.4 interpreter, an non-dynamically-linked unpatched LuaPosix and to build a custom Lua interpreter that automatically loads said "almost-static" LuaPosix while acting just like upstream's lua program.

Run make all. If you want to configure anything (CFLAGS, the compiler used, etc) you will have to customize several files:

1. Lua's lua/makefile.
2. LuaPosix invocation of luke: scripts/invoke-luke.lua.
3. This project's own Makefile.

In the future, it would be nice to have all projects read the same variables from a single file. Failing to change any of the mentioned files could result in weird compilation errors (this is particularly true if significant changes are made: for example, enabling ASan on the Lua interpreter while not enabling it on the outs/bundle executable will result in linking errors).

After building, the outs/ directory will contain (amongst other things) a bundle executable. This executable should only depend on your normal system's libraries, not on luaposix nor Lua 5.4 (you can validate that using ldd(1)).

While it should be ABI compatible with any Lua 5.4 library, I still recommend you to change the Makefile so that Lua 5.4 is dynamically linked in the case you plan to load a lot of C extensions with it (that way you can be sure it will work).

./outs/bundle
./outs/bundle -luni=posix.unistd -e 'print(uni.isatty(uni.STDOUT_FILENO))'
# Etc...

The outs/bundle program should behave identically to the lua program. This includes command line parsing, readed environment variables, the REPL, etc.

You can deploy this program (with it's few dynamic dependencies) to any other system, without needing to install LuaPosix or Lua there.