Merge pull request #926 from LittleHuba/fix_lua_build

Fix lua build

CMakeLists.txt

@@ -118,6 +118,10 @@ endif ()
 
 # Plugins / scripting
 pkg_check_modules (Lua "lua5.3")
+if (NOT Lua_FOUND)
+	pkg_check_modules (Lua "lua >= 5.3")
+endif()
+
 if (Lua_FOUND)
 	message("Enable Xournal++ Plugins")
 	add_includes_ldflags ("${Lua_LDFLAGS}" "${Lua_INCLUDE_DIRS}")

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"
 

src/plugin/Plugin.h

@@ -18,7 +18,9 @@
 #include <config-features.h>
 
 #ifdef ENABLE_PLUGINS
+extern "C" {
 #include <lua.h>
+}
 
 class Plugin;
 class Control;