message: [lldbsuite] Build with -gdwarf on Windows
  Earlier this month there was a change in clang that defaulted to using codeview rather than dwarf on Windows. Since all the tests rely on dwarf, we need to explicitly request dwarf when building on Windows.
diff: @@ -257,6 +257,12 @@ endif
  CFLAGS += -I$(SRCDIR) -include $(THIS_FILE_DIR)test_common.h -I$(THIS_FILE_DIR)
  CFLAGS += $(NO_LIMIT_DEBUG_INFO_FLAGS) $(ARCH_CFLAGS) $(CFLAGS_EXTRAS)
  +# If the OS is Windows, we need to pass -gdwarf to clang, otherwise it will build
  +# with codeview by default but all the tests rely on dwarf.
  +ifeq "$(OS)" "Windows_NT"
  + CFLAGS += -gdwarf
  +endif
  +
  # Use this one if you want to build one part of the result without debug information:
  ifeq "$(OS)" "Darwin"
  CFLAGS_NO_DEBUG = -O0 $(ARCHFLAG) $(ARCH) $(FRAMEWORK_INCLUDES) $(ARCH_CFLAGS) $(CFLAGS_EXTRAS)
  