windows module lua5.1 Compilation fails

[july0426]

MSVC with LUA_INC / LUA_LIB / LUA_LIB_NAME environment variables. Windows 10 ,mlua 5.0.1 I set up,but faild. Can you give a more detailed example or configuration

[khvzak]

A first example is from github actions where I test Lua modules on Windows: https://github.com/khvzak/mlua/blob/master/.github/workflows/main.yml#L186

A second example is using Windows + MSVC

1. Download binary Lua dll & lib (I used the luabinaries project, this file)
2. Unzip to lua51 folder
3. Go to mlua/examples/module
4. From git shell

$ LUA_INC=$HOME/Downloads/lua51/include LUA_LIB=$HOME/Downloads/lua51 LUA_LIB_NAME=lua5.1 cargo build --features lua51

Build ok, we got mlua/target/debug/rust_module.dll

For testing:

1. Go to mlua/target/debug
2. Run

$ lua5.1 -e 'print(require("rust_module").sum(2,3))'
5
$ lua5.1 -e 'print(require("rust_module").used_memory())'
35441

Windows 10, Latest MSVC Community, Git, Rust 1.49.0

[july0426]

Thank you very much for your reply. I succeeded !!! The reason for the failure is that Lua's lib was downloaded incorrectly. I succeeded in both Lua5.1 and Lua5.4

[july0426]

Now I have a new problem. The compiled DLL is required and executed correctly by Lua54.exe, but not by LuaQuire in Rust. Any solution, like this `use mlua::prelude::*;

fn main() -> LuaResult<()> { let lua = unsafe {Lua::new()}; lua.load(r#"print(require("my_module").sum(2,3))"#).exec()?;

Ok(())

}`

[khvzak]

The line let lua = unsafe {Lua::new()}; should be replaced with let lua = unsafe { Lua::unsafe_new() }; to allow loading C modules

[july0426]

DLL is compiled in features=['lua54','module'] mode The rust project is compliated with eatures=['lua54','vendored'] mode

[july0426]

Lua library does not load properly without lua54. DLL, but I cannot find a way to link lua54. DLL to the library