Im trying to use luasocket with lua 5.2. i downloaded the code form the git repository and built it. then made a make install so that it generated core.dll and mime.dll. put those into the custom lua program directory [CPATH] im developing and tried loading it. But i get following error message:
Failed at error loading module 'socket.core' from file 'D:\[..myprogram..]\socket\core.dll':
Module was not found.
how can i check if the dll is correct. or did i do anything wrong?
Thanks
Is your executable residing in the same directory as your lua files?
Try putting the dll in the directory of your executable.
Most likely you are loading socket modules that are compiled for Lua 5.1, not Lua 5.2 (or at least it's the same error I get in a case like that). Is it possible that you have socket module for Lua 5.1 somewhere in your path? It may come with LuaForWindows or another package. You can try to remove/move the socket DLLs you compiled (for Lua 5.2) and see if you get the same error.
Related
When writing luarocks install gumbo
In the location/directory of my luarocks file in cmd, I am getting the following error
Warning: Could not find Lua 5.3 in PATH.
Modules may not install with the correct configurations. You may want to specify the path prefix to your build of Lua 5.3 using --lua-dir
Installing https://luarocks.org/gumbo-0.5-1.src.rock
Error: Failed finding Lua library. You may need to configure LUA_LIBDIR.
I've added lua53.exe to the same directory, and added the file both to my user variables and system variables in control panel.
Not sure if worth mentioning, but when running lua53.exe and trying to use luarocks install gumbo from there,
the lua53 cmd-like window responds with stdin:1: syntax error near 'install'
I was hoping to do some web scraping with lua, and later on building a World of Warcraft addon that utilizes gumbo to show certain helpful information within the WoW client, but I can't seem to even get the most basic stuff to work...
Setting up LuaRocks on Windows is annoying and I'm not familiar with it myself. If you added both the LuaRocks and Lua 5.3 Windows binaries (Executables and Includes) to your Path system variable:
luarocks path prints the commands for setting up the LUA_PATH and LUA_CPATH system variables.
The config.lua file tells you what your variables.LUA_LIBDIR value is. You can check it with luarocks config. For me that file would be in:
C:/Users/Ketho/AppData/Roaming/luarocks/config-5.3.lua
otherwise you can create an empty file there and put in this line to point it to wherever your Lua folder is:
variables.LUA_LIBDIR = "C:/lua-5.3.5_Win32_bin"
variables.LUA_INCDIR = "C:/lua-5.3.5_Win32_bin/include"
As for using gumbo to show information within WoW, the addon environment is sandboxed. Unless you meant you just want to get the data to hardcode into your addon.
I've started to really get into using Lua, and a few months ago I've figured out on how to turn .lua files into executables.
It's been working great so far, until I started to compile lua scripts that use 'socket.http'. It seems to be missing some DLLs of some sort, and I don't know how I would be able to add them into the same folder.
Where would I find these such DLLs to add into the same folder of my executable, so that I could be able to run Lua executables using socket.http?
socket.http module doesn't come as DLL; it comes as a pure-lua module. Usually there is socket.lua and socket\http.lua files (as well as socket\core.dll), so you'd need to package all of them and make them available to your script to make it work.
You can find the Lua files in the luasocket repository, but make sure that they match the API for the binaries (socket/core.* files) you are using.
Hello i would like to change folder that luasocket is installing to how can i do that ? My plan is at the end i want to export my lua file as exe and use it to run my server. I want to put luasocket inside Project file so other windows computer wont have problems (I am using Windows computer too). Thanks for helping.
my code
Main.lua
lpackage.path = package.path..';./libs/lua/?.lua'
package.cpath = package.cpath..';./libs/socket/?.dll;'
This is my Project tree
Project
-libs
--lua
Assuming you keep the name of the luasocket DLL the same (which is usually, core.dll), you need to use ./libs/?.dll instead of ./libs/socket/?.dll, as the question mark will be replaced with socket/core when socket.core module is required from socket.lua. You'll need to put core.dll in libs/socket folder.
You will also need to have lua.dll present (as the core.dll is usually compiled against it) or use a proxy dll if your executable statically compiles lua interpreter.
I'm new to lua and recently learning DL with Torch.
I have installed torch just following instructions: http://torch.ch/docs/getting-started.html#_ and added some packages using luarocks install. Then I wrote a test file:
require 'torch'
require 'nn'
--[[do something]]
when running with lua test.lua (Ubuntu 14.04), it errs as followed:
error loading module 'libpaths' from file
'/home/user1/torch/install/lib/lua/5.1/libpaths.so':
/home/user1/torch/install/lib/lua/5.1/libpaths.so: undefined symbol:
luaL_register
It seems something wrong with path settings or so. However, when I run test with command th, it works fine.
I searched and examined these answers: Error loading module (Lua)
Torch7 Lua, error loading module 'libpaths' (Linux)
not fully answered my question though.
So I wonder where exactly the error comes from, and how to fix it. Even though I can use torch with th.
ADD:
I find that the reason maybe API luaL_register is not supported in ver 5.2 which is what I am using, while th calls a lua shell in ver 5.1? So does this mean I can only use th to run my files?
You are likely using your system Lua (probably version 5.2), but Torch requires LuaJIT it comes with. Run your script as luajit test.lua (it's probably in /home/user1/torch/install/bin/luajit).
Im running some code using the dart VM from the command line.
the command is:
dart --checked -package-root=/dart/packages test_service.dart
however Im getting an error:
gf_service.dart': error: line 7 pos 1: library handler failed
import 'package:start/start.dart' as start;
Im confused since in the dir referenced by "-package-root" argument Im definitely seeing the "start/start.dart" file, so it exists. the -package-root folder is also correct.
is there something Im missing?
thank you
Normally you don't need the -package-root argument but the directory that contains the script file should have a symbolic link to the packages directory of your package. pub get should create these symlinks.
the solution to this issue is to use "--package-root" as the argument name, and not "-package-root" as googles own dart documentation says
https://www.dartlang.org/docs/dart-up-and-running/contents/ch04-tools-dart-vm.html
(this should be fixed)
Im using dart vm 1.3.0