From ef0a07c073665c0868294fcc73b1344aca62b133 Mon Sep 17 00:00:00 2001
From: Daniel Hahler <git@thequod.de>
Date: Thu, 22 Feb 2018 01:22:26 +0100
Subject: [PATCH] cmake/LuaHelpers.cmake: check_lua_module: use 'lua -l'

It only shortens the traceback a bit for when a module is not found
though, only removing the "(command line):1: in main chunk" (with
lua5.2).
---
 cmake/LuaHelpers.cmake | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/cmake/LuaHelpers.cmake b/cmake/LuaHelpers.cmake
index a401ff75df..3cba47412b 100644
--- a/cmake/LuaHelpers.cmake
+++ b/cmake/LuaHelpers.cmake
@@ -4,7 +4,7 @@
 
 # Check if a module is available in Lua
 function(check_lua_module LUA_PRG_PATH MODULE RESULT_VAR)
-  execute_process(COMMAND ${LUA_PRG_PATH} -e "require('${MODULE}')"
+  execute_process(COMMAND ${LUA_PRG_PATH} -l "${MODULE}" -e ""
     RESULT_VARIABLE module_missing)
   if(module_missing)
     set(${RESULT_VAR} False PARENT_SCOPE)