** PCH Support for NMake with VS2012

NMAKE-VS2012 Error LNK2011
while NMAKE-VS2010 does not complain
we need to link the pch.obj file
see http://msdn.microsoft.com/en-us/library/3ay26wa2(v=vs.110).aspx

** PCH Support for Ninja
Ninja need to add property
        OBJECT_DEPENDS for using PCH
        OBJECT_OUTPUTS for create PCH
see http://public.kitware.com/pipermail/cmake-developers/2012-March/003653.html

code/CMakeModules/PCHSupport.cmake

@@ -209,6 +209,9 @@ MACRO(PCH_SET_COMPILE_COMMAND _inputcpp _compile_FLAGS)
   IF(MSVC)
     GET_PDB_FILENAME(PDB_FILE ${_PCH_current_target})
     SET(PCH_COMMAND ${CMAKE_CXX_COMPILER} ${pchsupport_compiler_cxx_arg1} ${_compile_FLAGS} /Yc /Fp"${PCH_OUTPUT}" ${_inputcpp} /Fd"${PDB_FILE}" /c /Fo"${PCH_OUTPUT}.obj")
+    # Ninja PCH Support
+    # http://public.kitware.com/pipermail/cmake-developers/2012-March/003653.html
+    SET_SOURCE_FILES_PROPERTIES(${_inputcpp} PROPERTIES OBJECT_OUTPUTS "${PCH_OUTPUT}.obj")
   ELSE(MSVC)
     SET(HEADER_FORMAT "c++-header")
     SET(_FLAGS "")
@@ -268,6 +271,18 @@ MACRO(ADD_PRECOMPILED_HEADER_TO_TARGET _targetName)
 
   IF(MSVC)
     SET(_target_cflags "${oldProps} /Yu\"${PCH_INPUT}\" /FI\"${PCH_INPUT}\" /Fp\"${PCH_OUTPUT}\"")
+    # Ninja PCH Support
+    # http://public.kitware.com/pipermail/cmake-developers/2012-March/003653.html
+    SET_TARGET_PROPERTIES(${_targetName} PROPERTIES OBJECT_DEPENDS "${PCH_OUTPUT}")
+    
+    # NMAKE-VS2012 Error LNK2011 (NMAKE-VS2010 do not complain)
+    # we need to link the pch.obj file, see http://msdn.microsoft.com/en-us/library/3ay26wa2(v=vs.110).aspx
+    GET_TARGET_PROPERTY(DEPS ${_targetName} LINK_LIBRARIES)
+    if (NOT DEPS)
+      set (DEPS)
+    endif ()
+    list (INSERT DEPS 0 "${PCH_OUTPUT}.obj")
+    SET_TARGET_PROPERTIES(${_targetName} PROPERTIES LINK_LIBRARIES "${DEPS}")
   ELSE(MSVC)
     # for use with distcc and gcc >4.0.1 if preprocessed files are accessible
     # on all remote machines set