Fix lua. It had bad linkage with the c++ wrapper.

lua/CMakeLists.txt

@@ -16,34 +16,34 @@ ENDIF()
 # Build Libraries
 SET (SRC_LIBLUA
 src/lapi.c
+src/lauxlib.c
+src/lbaselib.c
 src/lcode.c
+src/ldblib.c
 src/ldebug.c
 src/ldo.c
 src/ldump.c
 src/lfunc.c
 src/lgc.c
+src/linit.c
+src/liolib.c
 src/llex.c
+src/lmathlib.c
 src/lmem.c
+src/loadlib.c
 src/lobject.c
 src/lopcodes.c
+src/loslib.c
 src/lparser.c
 src/lstate.c
 src/lstring.c
+src/lstrlib.c
 src/ltable.c
+src/ltablib.c
 src/ltm.c
 src/lundump.c
 src/lvm.c
 src/lzio.c
-src/lauxlib.c
-src/lbaselib.c
-src/ldblib.c
-src/liolib.c
-src/lmathlib.c
-src/loslib.c
-src/ltablib.c
-src/lstrlib.c
-src/loadlib.c
-src/linit.c
 )
 
 ADD_LIBRARY ( lua ${SRC_LIBLUA} )

lua/include/luaconf.h

@@ -152,17 +152,17 @@
 ** LUA_BUILD_AS_DLL to get it).
 */
 #if defined(LUA_BUILD_AS_DLL)
-
-#if defined(LUA_CORE) || defined(LUA_LIB)
-#define LUA_API __declspec(dllexport)
-#else
-#define LUA_API __declspec(dllimport)
-#endif
-
+    #if defined(LUA_CORE) || defined(LUA_LIB)
+        #define LUA_API __declspec(dllexport)
+    #else
+        #define LUA_API __declspec(dllimport)
+    #endif
 #else
-
-#define LUA_API		extern
-
+    #ifdef __cplusplus
+        #define LUA_API extern "C"
+    #else
+        #define LUA_API extern
+    #endif
 #endif
 
 /* more often than not the libs go together with the core */