Follow googletest logic for suppressing warnings in unittests/UnitTestMain.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@82373 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/utils/unittest/UnitTestMain/Makefile b/utils/unittest/UnitTestMain/Makefile
index 07a74e3..aadff21 100644
--- a/utils/unittest/UnitTestMain/Makefile
+++ b/utils/unittest/UnitTestMain/Makefile
@@ -10,10 +10,12 @@
 LEVEL = ../../..
 
 include $(LEVEL)/Makefile.config
+NO_MISSING_FIELD_INITIALIZERS := $(shell $(CXX) -Wno-missing-field-initializers -fsyntax-only -xc /dev/null 2>/dev/null && echo -Wno-missing-field-initializers)
+NO_VARIADIC_MACROS := $(shell $(CXX) -Wno-variadic-macros -fsyntax-only -xc /dev/null 2>/dev/null && echo -Wno-variadic-macros)
 
 LIBRARYNAME = UnitTestMain
 BUILD_ARCHIVE = 1
 CPP.Flags += -I$(LLVM_SRC_ROOT)/utils/unittest/googletest/include
-CPP.Flags += -Wno-variadic-macros
+CPP.Flags += $(NO_MISSING_FIELD_INITIALIZERS) $(NO_VARIADIC_MACROS)
 
 include $(LEVEL)/Makefile.common
diff --git a/utils/unittest/googletest/Makefile b/utils/unittest/googletest/Makefile
index 2e0bf72..29fe679 100644
--- a/utils/unittest/googletest/Makefile
+++ b/utils/unittest/googletest/Makefile
@@ -8,11 +8,11 @@
 ##===----------------------------------------------------------------------===##
 
 LEVEL := ../../..
+
 include $(LEVEL)/Makefile.config
 NO_MISSING_FIELD_INITIALIZERS := $(shell $(CXX) -Wno-missing-field-initializers -fsyntax-only -xc /dev/null 2>/dev/null && echo -Wno-missing-field-initializers)
 NO_VARIADIC_MACROS := $(shell $(CXX) -Wno-variadic-macros -fsyntax-only -xc /dev/null 2>/dev/null && echo -Wno-variadic-macros)
 
-
 LIBRARYNAME = GoogleTest
 BUILD_ARCHIVE = 1
 CPP.Flags += -I$(LLVM_SRC_ROOT)/utils/unittest/googletest/include