Fix windows build

ThirdParty/RootMinimizers/CMakeLists.txt

@@ -25,7 +25,10 @@ file(GLOB include_files
 # --- definitions ---------
 add_definitions(-DWARNINGMSG)
 set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} \
-    -DMATH_NO_PLUGIN_MANAGER -DHAS_MINUIT2 -DR__HAS_MATHMORE -Wno-deprecated-declarations")
+    -DMATH_NO_PLUGIN_MANAGER -DHAS_MINUIT2 -DR__HAS_MATHMORE")
+if(NOT WIN32)
+    SET(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -Wno-deprecated-declarations")
+endif()
 
 # --- making library ------------
 add_library(${library_name} STATIC ${source_files} ${include_files})