From fd04a74fad7b19fbc5f72d6053da71573d713e99 Mon Sep 17 00:00:00 2001
From: Peter Marheine <peter@taricorp.net>
Date: Wed, 6 Dec 2023 21:00:53 +1100
Subject: [PATCH] Support building for emscripten

Emscripten generally acts like a POSIX system, and building Lua
with POSIX features works correctly when targeting emscripten.

This makes it possible to build applications depending on Lua for
the wasm32-unknown-emscripten target.
---
 src/lib.rs | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/src/lib.rs b/src/lib.rs
index 6aab3d8..869af21 100644
--- a/src/lib.rs
+++ b/src/lib.rs
@@ -104,6 +104,9 @@ impl Build {
                 // Defined in Lua >= 5.3
                 config.define("LUA_USE_WINDOWS", None);
             }
+            _ if target.contains("emscripten") => {
+                config.define("LUA_USE_POSIX", None);
+            }
             _ => panic!("don't know how to build Lua for {}", target),
         };