Embedding Lua in C

hello.lua

-- Pack this into an object file with ld: ld -r -b binary -o hello.o hello.lua

print "Hello, World!"

main.c

#include <lua.h>
#include <lualib.h>
#include <lauxlib.h>

/*
  Compile this like so:
  gcc -o hello_test hello.o main.c -llua
*/

extern char binary_hello_lua_start[];
extern char binary_hello_lua_end[];
extern char binary_hello_lua_size[];

int get_module(lua_State *lua);

int main(int argc, char **argv){
    /* Create and setup the Lua state */
    lua_State *lua = lua_open();
    luaL_openlibs(lua);

    /* Add the loader and put it in package.loaders */
    lua_register(lua, "get_module", get_module);
    luaL_dostring(lua, "table.insert(package.loaders, get_module)");

    /* Load the module */
    luaL_dostring(lua, "require 'hello'");

    return 0;
}

int get_module(lua_State *lua){
    const char *modname = luaL_checkstring(lua, 1);

    /* This is just an example, in a real app we'd
       turn modname into a real resource pointer
       instead of just using hello.lua */
    if(1 == 1){
        luaL_loadbuffer(lua, binary_hello_lua_start, (int)&binary_hello_lua_size, modname);
    } else {
        lua_pushnil(lua);
    }

    return 1;
}