[Robot] App: enable precompiled header

src/Mod/Robot/App/CMakeLists.txt

@@ -75,6 +75,12 @@ SET(Robot_SRCS
     ${Python_SRCS}
 )
 
+if(FREECAD_USE_PCH)
+    add_definitions(-D_PreComp_)
+    GET_MSVC_PRECOMPILED_SOURCE("PreCompiled.cpp" PCH_SRCS ${Robot_SRCS})
+    ADD_MSVC_PRECOMPILED_HEADER(Robot PreCompiled.h PreCompiled.cpp PCH_SRCS)
+endif(FREECAD_USE_PCH)
+
 # FIXME: The bundled KDL has some extensions which makes it incompatible
 # to an installed KDL. To fix the issue two things must be done:
 # * revert the changes (and look for an alternative)

src/Mod/Robot/App/PreCompiled.cpp

@@ -20,5 +20,4 @@
  *                                                                         *
  ***************************************************************************/
 
-
 #include "PreCompiled.h" 

src/Mod/Robot/App/PreCompiled.h

@@ -38,13 +38,9 @@
 
 #ifdef _PreComp_
 
-// standard
-#include <cassert>
-#include <iostream>
-#include <map>
+// STL
+#include <memory>
 #include <sstream>
-#include <string>
-#include <vector>
 
 // kdl_cp
 #include "kdl_cp/chain.hpp"