diff --git a/lib/lua/CMakeLists.txt b/lib/lua/CMakeLists.txt
index db112d557..6e5e0f565 100644
--- a/lib/lua/CMakeLists.txt
+++ b/lib/lua/CMakeLists.txt
@@ -20,6 +20,12 @@ endif()
 
 # Lua needs to be linked dynamically on Windows and statically on *nix, so that LuaRocks work
 if (WIN32)
+
+	#for compiliers other than msvc we need to tell lua that its building as a dll
+	if (NOT MSVC)
+		add_flags_cxx(-DLUA_BUILD_AS_DLL=1)
+	endif()
+	
 	add_library(lua SHARED ${SOURCE})
 	set(LIBRARY_OUTPUT_PATH ${CMAKE_SOURCE_DIR}/MCServer)
 
diff --git a/lib/sqlite/CMakeLists.txt b/lib/sqlite/CMakeLists.txt
index 0815127ef..9add2280b 100644
--- a/lib/sqlite/CMakeLists.txt
+++ b/lib/sqlite/CMakeLists.txt
@@ -17,6 +17,10 @@ if (WIN32)
 	source_group("Sources" FILES ${SOURCE})
 endif()
 
+# FreeBSD requires us to define this to get POSIX 2001 standard
+if (${CMAKE_SYSTEM_NAME} STREQUAL "FreeBSD")
+	add_flags_cxx(-D__POSIX_VISIBLE=200112)
+endif()
 
 add_library(sqlite ${SOURCE})
 
diff --git a/src/Generating/PrefabPiecePool.cpp b/src/Generating/PrefabPiecePool.cpp
index ad97ab0e7..122b9d2af 100644
--- a/src/Generating/PrefabPiecePool.cpp
+++ b/src/Generating/PrefabPiecePool.cpp
@@ -26,6 +26,34 @@ cPrefabPiecePool::cPrefabPiecePool(
 
 
 
+cPrefabPiecePool::~cPrefabPiecePool()
+{
+	Clear();
+}
+
+
+
+
+
+void cPrefabPiecePool::Clear(void)
+{
+	m_PiecesByConnector.clear();
+	for (cPieces::iterator itr = m_AllPieces.begin(), end = m_AllPieces.end(); itr != end; ++itr)
+	{
+		delete *itr;
+	}
+	m_AllPieces.clear();
+	for (cPieces::iterator itr = m_StartingPieces.begin(), end = m_StartingPieces.end(); itr != end; ++itr)
+	{
+		delete *itr;
+	}
+	m_StartingPieces.clear();
+}
+
+
+
+
+
 void cPrefabPiecePool::AddPieceDefs(const cPrefab::sDef * a_PieceDefs, size_t a_NumPieceDefs)
 {
 	ASSERT(a_PieceDefs != NULL);
diff --git a/src/Generating/PrefabPiecePool.h b/src/Generating/PrefabPiecePool.h
index 695ab4ea5..b9c1f0483 100644
--- a/src/Generating/PrefabPiecePool.h
+++ b/src/Generating/PrefabPiecePool.h
@@ -34,6 +34,12 @@ public:
 		const cPrefab::sDef * a_StartingPieceDefs, size_t a_NumStartingPieceDefs
 	);
 	
+	/** Destroys the pool, freeing all pieces. */
+	~cPrefabPiecePool();
+	
+	/** Removes and frees all pieces from this pool. */
+	void Clear(void);
+	
 	/** Adds pieces from the specified definitions into m_AllPieces. Also adds the pieces into
 	the m_PiecesByConnector map.
 	May be called multiple times with different PieceDefs, will add all such pieces. */
@@ -44,7 +50,6 @@ public:
 	May be called multiple times with different PieceDefs, will add all such pieces. */
 	void AddStartingPieceDefs(const cPrefab::sDef * a_StartingPieceDefs, size_t a_NumStartingPieceDefs);
 	
-	
 protected:
 
 	/** The type used to map a connector type to the list of pieces with that connector */