Add custom c module loading code for luvit.

src/pre_generated-zmq.nobj.c

@@ -936,7 +936,22 @@ static const char zmq_ffi_lua_code[] = "local ffi=require\"ffi\"\n"
 "local p_config = package.config\n"
 "local p_cpath = package.cpath\n"
 "\n"
-"local function ffi_load_cmodule(name, global)\n"
+"local ffi_load_cmodule\n"
+"\n"
+"-- try to detect luvit.\n"
+"if p_config == nil and p_cpath == nil then\n"
+"	ffi_load_cmodule = function(name, global)\n"
+"		for path,module in pairs(package.loaded) do\n"
+"			if type(module) == 'string' and path:match(\"zmq\") then\n"
+"				local C, err = ffi_safe_load(path .. '.luvit', global)\n"
+"				-- return opened library\n"
+"				if C then return C end\n"
+"			end\n"
+"		end\n"
+"		error(\"Failed to find: \" .. name)\n"
+"	end\n"
+"else\n"
+"	ffi_load_cmodule = function(name, global)\n"
 "		local dir_sep = p_config:sub(1,1)\n"
 "		local path_sep = p_config:sub(3,3)\n"
 "		local path_mark = p_config:sub(5,5)\n"
@@ -951,6 +966,7 @@ static const char zmq_ffi_lua_code[] = "local ffi=require\"ffi\"\n"
 "			if C then return C end\n"
 "		end\n"
 "		error(\"Failed to find: \" .. name)\n"
+"	end\n"
 "end\n"
 "\n"
 "local _M, _priv, udata_new = ...\n"