Cmake: Moved USE_CXX1 selection after incluide of orocos-rtt.cmake

CMakeLists.txt

@@ -21,11 +21,6 @@ endif()
 
 PROJECT(orocos-rtt)
 
-OPTION(USE_CPP11 "Turn on to replace boost::bind with cpp11 bind." OFF)
-if(USE_CPP11)
-  ADD_DEFINITIONS(-DUSE_CPP11)
-endif(USE_CPP11)
-
 
 SET( RTT_VERSION 2.8.0 )
 STRING( REGEX MATCHALL "[0-9]+" RTT_VERSIONS ${RTT_VERSION} )
@@ -48,6 +43,11 @@ if (NOT EXISTS ${PROJ_SOURCE_DIR}/orocos-rtt.cmake)
   INCLUDE(${PROJ_SOURCE_DIR}/orocos-rtt.default.cmake)
 endif ()
 
+OPTION(USE_CPP11 "Turn on to replace boost::bind with cpp11 bind." OFF)
+if(USE_CPP11)
+  ADD_DEFINITIONS(-DUSE_CPP11)
+endif(USE_CPP11)
+
 # On Windows, the default CMAKE_INSTALL_PREFIX is either:
 # C:\Program Files\orocos-rtt or C:\Program Files (x86)\orocos-rtt
 # However, we want it to be either: