From 18525f02d8a2bef553f25fa5c235ce7c403d072e Mon Sep 17 00:00:00 2001
From: Ulrich Huber <ulrich@huberulrich.de>
Date: Sat, 23 Feb 2019 12:41:08 +0100
Subject: [PATCH] fix building for lua

---
 CMakeLists.txt        | 2 +-
 src/plugin/Plugin.cpp | 2 ++
 src/plugin/Plugin.h   | 2 ++
 3 files changed, 5 insertions(+), 1 deletion(-)

diff --git a/CMakeLists.txt b/CMakeLists.txt
index e70e27ea..c210383e 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -117,7 +117,7 @@ if (MacIntegration_FOUND)
 endif ()
 
 # Plugins / scripting
-pkg_check_modules (Lua "lua5.3")
+pkg_check_modules (Lua "lua >= 5.3")
 if (Lua_FOUND)
 	message("Enable Xournal++ Plugins")
 	add_includes_ldflags ("${Lua_LDFLAGS}" "${Lua_INCLUDE_DIRS}")
diff --git a/src/plugin/Plugin.cpp b/src/plugin/Plugin.cpp
index fddff7d2..8fd36598 100644
--- a/src/plugin/Plugin.cpp
+++ b/src/plugin/Plugin.cpp
@@ -5,10 +5,12 @@
 
 #ifdef ENABLE_PLUGINS
 
+extern "C" {
 #include <lua.h>
 #include <lauxlib.h>
 #include <lualib.h>
 #include <lauxlib.h>
+}
 
 #include "luapi_application.h"
 
diff --git a/src/plugin/Plugin.h b/src/plugin/Plugin.h
index 2c1d3824..9b559fb3 100644
--- a/src/plugin/Plugin.h
+++ b/src/plugin/Plugin.h
@@ -18,7 +18,9 @@
 #include <config-features.h>
 
 #ifdef ENABLE_PLUGINS
+extern "C" {
 #include <lua.h>
+}
 
 class Plugin;
 class Control;