Probe for flags before using them to try to help compiling with

compilers that don't support those flags.  This hopefully will help
gcc 3.X compile this code.  http://llvm.org/PR3487

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@63882 91177308-0d34-0410-b5e6-96231b3b80d8

diff --git a/utils/unittest/googletest/Makefile b/utils/unittest/googletest/Makefile
index 2d162a63801e6229172c50041f0dbb589148774e..db18296fe668920a123dc608deff45a9f25e5abc 100644 (file)
--- a/utils/unittest/googletest/Makefile
+++ b/utils/unittest/googletest/Makefile
@@ -9,10 +9,13 @@
 
 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_VAROADIC_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/
-CPP.Flags += -Wno-missing-field-initializers -Wno-variadic-macros
+CPP.Flags += $(NO_MISSING_FIELD_INITIALIZERS) $(NO_VAROADIC_MACROS)
 
 include $(LEVEL)/Makefile.common