+ add option to switch off precompiled header

src/Mod/Measure/App/CMakeLists.txt

@@ -47,11 +47,11 @@ SET(Measure_SRCS
     ${Python_SRCS}
 )
 
-if(MSVC)
+if(BUILD_USE_PCH)
     add_definitions(-D_PreComp_)
     GET_MSVC_PRECOMPILED_SOURCE("PreCompiled.cpp" Measure_CPP_SRCS ${Measure_SRCS})
     ADD_MSVC_PRECOMPILED_HEADER(Measure PreCompiled.h PreCompiled.cpp Measure_CPP_SRCS)
-endif(MSVC)
+endif(BUILD_USE_PCH)
 
 # Set special compiler flag to convert a SIGSEV into an exception
 # to handle issue #0000478.

src/Mod/Measure/App/PreCompiled.h

@@ -37,6 +37,11 @@
 # define MeshExport
 #endif
 
+#ifdef FC_OS_WIN32
+#define WIN32_LEAN_AND_MEAN
+#define NOMINMAX
+#endif
+
 #ifdef _PreComp_
 
 // standard
@@ -63,4 +68,4 @@
 #elif defined(FC_OS_WIN32)
 #include <windows.h>
 #endif // _PreComp_
-#endif
+#endif