Index: examples/Kaleidoscope/Chapter2/CMakeLists.txt
===================================================================
--- examples/Kaleidoscope/Chapter2/CMakeLists.txt
+++ examples/Kaleidoscope/Chapter2/CMakeLists.txt
@@ -11,3 +11,8 @@
     -Wno-unused-private-field
     )
 endif()
+
+if(MSVC)
+  # ignore "warning LNK4199: /DELAYLOAD:shell32.dll ignored; no imports found from shell32.dll"
+  target_link_libraries(Kaleidoscope-Ch2 PRIVATE "-ignore:4199")
+endif()
Index: unittests/Support/CMakeLists.txt
===================================================================
--- unittests/Support/CMakeLists.txt
+++ unittests/Support/CMakeLists.txt
@@ -83,7 +83,12 @@
 # Disable all warning for AlignOfTest.cpp,
 # as it does things intentionally, and there is no reliable way of
 # disabling all warnings for all the compilers by using pragmas.
-set_source_files_properties(AlignOfTest.cpp PROPERTIES COMPILE_FLAGS -w)
+# Don't disable on MSVC, because all incriminated warnings are already disabled
+# in source; and because we would otherwise see this warning:
+#   cl : Command line warning D9025: overriding '/W4' with '/w'
+if(NOT MSVC)
+  set_source_files_properties(AlignOfTest.cpp PROPERTIES COMPILE_FLAGS -w)
+endif()
 
 # ManagedStatic.cpp uses <pthread>.
 target_link_libraries(SupportTests PRIVATE LLVMTestingSupport ${LLVM_PTHREAD_LIB})
Index: utils/unittest/googlemock/include/gmock/gmock-matchers.h
===================================================================
--- utils/unittest/googlemock/include/gmock/gmock-matchers.h
+++ utils/unittest/googlemock/include/gmock/gmock-matchers.h
@@ -142,6 +142,11 @@
 template <typename T>
 class MatcherInterface : public MatcherDescriberInterface {
  public:
+  // Define virtual destructor to avoid the following MSVC warning:
+  // warning C5046: 'testing::MatcherInterface<T>::~MatcherInterface':
+  //    Symbol involving type with internal linkage not defined
+  virtual ~MatcherInterface() {}
+
   // Returns true iff the matcher matches x; also explains the match
   // result to 'listener' if necessary (see the next paragraph), in
   // the form of a non-restrictive relative clause ("which ...",