From 430b62322355c0bfe6233586c9823013d60a3335 Mon Sep 17 00:00:00 2001
From: Mattes D <github@xoft.cz>
Date: Sun, 17 Jul 2016 16:23:29 +0200
Subject: Use system Lua, if available, to generate bindings.

Closes #1031.
---
 CheckLua.cmake | 23 +++++++++++++++++++++++
 1 file changed, 23 insertions(+)
 create mode 100644 CheckLua.cmake

(limited to 'CheckLua.cmake')

diff --git a/CheckLua.cmake b/CheckLua.cmake
new file mode 100644
index 000000000..e8827fe00
--- /dev/null
+++ b/CheckLua.cmake
@@ -0,0 +1,23 @@
+# CheckLua.cmake
+
+# Checks whether the Lua standalone interpreter is installed on the host system
+# If found, sets HAS_LUA_INTERPRETER to 1 and LUA_INTERPRETER_VERSION to the version reported ("5.1" etc.)
+# If not found, unsets HAS_LUA_INTERPRETER
+
+
+
+
+execute_process(
+	COMMAND lua -e "io.stdout:write(string.match(_VERSION, '%d+%.%d+'))"
+	RESULT_VARIABLE LUA_EXECUTED
+	OUTPUT_VARIABLE LUA_INTERPRETER_VERSION
+)
+
+if ("${LUA_EXECUTED}" STREQUAL "0")
+	set(HAS_LUA_INTERPRETER 1)
+else()
+	unset(HAS_LUA_INTERPRETER)
+	unset(LUA_INTERPRETER_VERSION)
+endif()
+
+unset(LUA_EXECUTED)
-- 
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