diff -r -u ..\t\cmake-3.4.3-win32-x86\share\cmake-3.4\Modules\Platform\Windows-MSVC.cmake .\share\cmake-3.4\Modules\Platform\Windows-MSVC.cmake
--- ..\t\cmake-3.4.3-win32-x86\share\cmake-3.4\Modules\Platform\Windows-MSVC.cmake	Mon Jan 25 12:02:19 2016
+++ .\share\cmake-3.4\Modules\Platform\Windows-MSVC.cmake	Wed Mar 23 09:12:18 2016
@@ -237,8 +237,9 @@
 set(CMAKE_STATIC_LINKER_FLAGS_INIT "${CMAKE_STATIC_LINKER_FLAGS_INIT} ${_MACHINE_ARCH_FLAG}")
 unset(_MACHINE_ARCH_FLAG)
 
-# add /debug and /INCREMENTAL:YES to DEBUG and RELWITHDEBINFO also add pdbtype
-# on versions that support it
+# add /debug /INCREMENTAL:NO /OPT:REF to RELWITHDEBINFO, 
+# add /debug and /INCREMENTAL:YES to DEBUG, 
+# and also add pdbtype to both on versions that support it
 set( MSVC_INCREMENTAL_YES_FLAG "")
 if(NOT WINDOWS_PHONE AND NOT WINDOWS_STORE)
   if(NOT MSVC_INCREMENTAL_DEFAULT)
@@ -250,10 +251,10 @@
 
 if (CMAKE_COMPILER_SUPPORTS_PDBTYPE)
   set (CMAKE_EXE_LINKER_FLAGS_DEBUG_INIT "/debug /pdbtype:sept ${MSVC_INCREMENTAL_YES_FLAG}")
-  set (CMAKE_EXE_LINKER_FLAGS_RELWITHDEBINFO_INIT "/debug /pdbtype:sept ${MSVC_INCREMENTAL_YES_FLAG}")
+  set (CMAKE_EXE_LINKER_FLAGS_RELWITHDEBINFO_INIT "/debug /pdbtype:sept /INCREMENTAL:NO /OPT:REF")
 else ()
   set (CMAKE_EXE_LINKER_FLAGS_DEBUG_INIT "/debug ${MSVC_INCREMENTAL_YES_FLAG}")
-  set (CMAKE_EXE_LINKER_FLAGS_RELWITHDEBINFO_INIT "/debug ${MSVC_INCREMENTAL_YES_FLAG}")
+  set (CMAKE_EXE_LINKER_FLAGS_RELWITHDEBINFO_INIT "/debug /INCREMENTAL:NO /OPT:REF")
 endif ()
 # for release and minsize release default to no incremental linking
 set(CMAKE_EXE_LINKER_FLAGS_MINSIZEREL_INIT "/INCREMENTAL:NO")
@@ -299,7 +300,7 @@
   set(CMAKE_${lang}_FLAGS_INIT "${_PLATFORM_DEFINES}${_PLATFORM_DEFINES_${lang}} /D_WINDOWS /W3${_FLAGS_${lang}}")
   set(CMAKE_${lang}_FLAGS_DEBUG_INIT "/D_DEBUG /MDd /Zi /Ob0 /Od ${_RTC1}")
   set(CMAKE_${lang}_FLAGS_RELEASE_INIT "/MD /O2 /Ob2 /D NDEBUG")
-  set(CMAKE_${lang}_FLAGS_RELWITHDEBINFO_INIT "/MD /Zi /O2 /Ob1 /D NDEBUG")
+  set(CMAKE_${lang}_FLAGS_RELWITHDEBINFO_INIT "/MD /Zi /O2 /Ob1 /Oy- /D NDEBUG")
   set(CMAKE_${lang}_FLAGS_MINSIZEREL_INIT "/MD /O1 /Ob1 /D NDEBUG")
   set(CMAKE_${lang}_LINKER_SUPPORTS_PDB ON)