diff --git src/CMakeLists.txt src/CMakeLists.txt
index a1d9e3a..d82dac8 100644
--- src/lsl/src/CMakeLists.txt
+++ src/lsl/src/CMakeLists.txt
@@ -11,6 +11,14 @@ ENDIF ( EXISTS ${libSpringLobby_BINARY_DIR}/libSpringLobby_config.h  OR  EXISTS
 INCLUDE_DIRECTORIES(${libSpringLobby_SOURCE_DIR}/lib)
 INCLUDE_DIRECTORIES(${CMAKE_CURRENT_SOURCE_DIR})
 
+INCLUDE (CheckFunctionExists)
+
+SET(CMAKE_REQUIRED_INCLUDES stdio.h)
+CHECK_FUNCTION_EXISTS(fmemopen HAVE_FMEMOPEN)
+IF(HAVE_FMEMOPEN)
+	ADD_DEFINITIONS(-DHAVE_FMEMOPEN)
+ENDIF(HAVE_FMEMOPEN)
+
 add_subdirectory( lslutils )
 if (LSLSERVER)
 	add_subdirectory( lsl )
diff --git src/lslunitsync/image.cpp src/lslunitsync/image.cpp
index fbc4591..e26215c 100644
--- src/lsl/src/lslunitsync/image.cpp
+++ src/lsl/src/lslunitsync/image.cpp
@@ -14,7 +14,7 @@
 #include <lslutils/logging.h>
 
 
-#ifdef WIN32
+#if !defined(HAVE_FMEMOPEN)
 #include <boost/filesystem.hpp>
 //! we need our own fmemopen implementation since its posix only
 FILE* fmemopen(void* data, size_t size, const char* mode)