diff --git a/alethzero/CMakeLists.txt b/alethzero/CMakeLists.txt
index b58446935..8f355def7 100644
--- a/alethzero/CMakeLists.txt
+++ b/alethzero/CMakeLists.txt
@@ -40,9 +40,6 @@ target_link_libraries(${EXECUTABLE} evm)
 target_link_libraries(${EXECUTABLE} ethcore)
 target_link_libraries(${EXECUTABLE} devcrypto)
 target_link_libraries(${EXECUTABLE} secp256k1)
-if (NOT ("${CMAKE_CXX_COMPILER_ID}" STREQUAL "MSVC"))
-target_link_libraries(${EXECUTABLE} serpent)
-endif()
 target_link_libraries(${EXECUTABLE} lll)
 target_link_libraries(${EXECUTABLE} solidity)
 target_link_libraries(${EXECUTABLE} evmcore)
@@ -51,6 +48,10 @@ target_link_libraries(${EXECUTABLE} web3jsonrpc)
 target_link_libraries(${EXECUTABLE} jsqrc)
 target_link_libraries(${EXECUTABLE} natspec)
 
+if (NOT ("${CMAKE_CXX_COMPILER_ID}" STREQUAL "MSVC"))
+	target_link_libraries(${EXECUTABLE} serpent)
+endif()
+
 # eth_install_executable is defined in cmake/EthExecutableHelper.cmake
 eth_install_executable(${EXECUTABLE})
 
diff --git a/eth/CMakeLists.txt b/eth/CMakeLists.txt
index c98f3cbec..31aa8df96 100644
--- a/eth/CMakeLists.txt
+++ b/eth/CMakeLists.txt
@@ -16,7 +16,6 @@ add_executable(${EXECUTABLE} ${SRC_LIST} ${HEADERS})
 add_dependencies(${EXECUTABLE} BuildInfo.h)
 
 target_link_libraries(${EXECUTABLE} ${Boost_REGEX_LIBRARIES})
-target_link_libraries(${EXECUTABLE} ${Boost_DATE_TIME_LIBRARIES})
 
 if (READLINE_FOUND)
 	target_link_libraries(${EXECUTABLE} ${READLINE_LIBRARIES})
diff --git a/libdevcore/CMakeLists.txt b/libdevcore/CMakeLists.txt
index 51caee3d3..40aa7ce24 100644
--- a/libdevcore/CMakeLists.txt
+++ b/libdevcore/CMakeLists.txt
@@ -26,9 +26,14 @@ else()
 endif()
 
 target_link_libraries(${EXECUTABLE} ${Boost_THREAD_LIBRARIES})
-#target_link_libraries(${EXECUTABLE} ${Boost_DATE_TIME_LIBRARIES})
 target_link_libraries(${EXECUTABLE} ${Boost_SYSTEM_LIBRARIES})
 
+# transitive dependencies for windows executables
+if ("${CMAKE_CXX_COMPILER_ID}" STREQUAL "MSVC")
+	target_link_libraries(${EXECUTABLE} ${Boost_CHRONO_LIBRARIES})
+	target_link_libraries(${EXECUTABLE} ${Boost_DATE_TIME_LIBRARIES})
+endif()
+
 if (APPLE)
 	find_package(Threads REQUIRED)
 	target_link_libraries(${EXECUTABLE} ${CMAKE_THREAD_LIBS_INIT})
diff --git a/libdevcore/CommonIO.h b/libdevcore/CommonIO.h
index d2a67921b..23092b702 100644
--- a/libdevcore/CommonIO.h
+++ b/libdevcore/CommonIO.h
@@ -57,7 +57,7 @@ template <class S, class T> struct StreamOut { static S& bypass(S& _out, T const
 template <class S> struct StreamOut<S, uint8_t> { static S& bypass(S& _out, uint8_t const& _t) { _out << (int)_t; return _out; } };
 
 template <class T> inline std::ostream& operator<<(std::ostream& _out, std::vector<T> const& _e);
-template <class T, unsigned Z> inline std::ostream& operator<<(std::ostream& _out, std::array<T, Z> const& _e);
+template <class T, std::size_t Z> inline std::ostream& operator<<(std::ostream& _out, std::array<T, Z> const& _e);
 template <class T, class U> inline std::ostream& operator<<(std::ostream& _out, std::pair<T, U> const& _e);
 template <class T> inline std::ostream& operator<<(std::ostream& _out, std::list<T> const& _e);
 template <class T1, class T2, class T3> inline std::ostream& operator<<(std::ostream& _out, std::tuple<T1, T2, T3> const& _e);
@@ -84,7 +84,7 @@ inline S& streamout(S& _out, std::vector<T> const& _e)
 
 template <class T> inline std::ostream& operator<<(std::ostream& _out, std::vector<T> const& _e) { streamout(_out, _e); return _out; }
 
-template <class S, class T, unsigned Z>
+template <class S, class T, std::size_t Z>
 inline S& streamout(S& _out, std::array<T, Z> const& _e)
 {
 	_out << "[";
@@ -98,23 +98,7 @@ inline S& streamout(S& _out, std::array<T, Z> const& _e)
 	_out << "]";
 	return _out;
 }
-template <class T, unsigned Z> inline std::ostream& operator<<(std::ostream& _out, std::array<T, Z> const& _e) { streamout(_out, _e); return _out; }
-
-template <class S, class T, unsigned long Z>
-inline S& streamout(S& _out, std::array<T, Z> const& _e)
-{
-	_out << "[";
-	if (!_e.empty())
-	{
-		StreamOut<S, T>::bypass(_out, _e.front());
-		auto i = _e.begin();
-		for (++i; i != _e.end(); ++i)
-			StreamOut<S, T>::bypass(_out << ",", *i);
-	}
-	_out << "]";
-	return _out;
-}
-template <class T, unsigned long Z> inline std::ostream& operator<<(std::ostream& _out, std::array<T, Z> const& _e) { streamout(_out, _e); return _out; }
+template <class T, std::size_t Z> inline std::ostream& operator<<(std::ostream& _out, std::array<T, Z> const& _e) { streamout(_out, _e); return _out; }
 
 template <class S, class T>
 inline S& streamout(S& _out, std::list<T> const& _e)
diff --git a/libweb3jsonrpc/CMakeLists.txt b/libweb3jsonrpc/CMakeLists.txt
index c9b2aa39d..98bbaa339 100644
--- a/libweb3jsonrpc/CMakeLists.txt
+++ b/libweb3jsonrpc/CMakeLists.txt
@@ -30,7 +30,10 @@ target_link_libraries(${EXECUTABLE} ${JSON_RPC_CPP_SERVER_LIBRARIES})
 target_link_libraries(${EXECUTABLE} webthree)
 target_link_libraries(${EXECUTABLE} secp256k1)
 target_link_libraries(${EXECUTABLE} solidity)
-target_link_libraries(${EXECUTABLE} serpent)
+
+if (NOT ("${CMAKE_CXX_COMPILER_ID}" STREQUAL "MSVC"))
+	target_link_libraries(${EXECUTABLE} serpent)
+endif()
 
 if (ETH_JSON_RPC_STUB)
 	add_custom_target(jsonrpcstub)