Turns out gtest still prefers the system <tr1/tuple> over it's own
implementation. Force the internal one to unbreak clang selfhost on linux.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@105386 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/unittests/Makefile.unittest b/unittests/Makefile.unittest
index 3bed567..6001c43 100644
--- a/unittests/Makefile.unittest
+++ b/unittests/Makefile.unittest
@@ -23,6 +23,9 @@
CPP.Flags += -I$(LLVM_SRC_ROOT)/utils/unittest/googletest/include
CPP.Flags += $(NO_MISSING_FIELD_INITIALIZERS) $(NO_VARIADIC_MACROS)
CPP.Flags += -DGTEST_HAS_RTTI=0
+# libstdc++'s TR1 <tuple> header depends on RTTI and uses C++'0x features not
+# supported by Clang, so force googletest to use its own tuple implementation.
+CPP.Flags += -DGTEST_USE_OWN_TR1_TUPLE
TESTLIBS = -lGoogleTest -lUnitTestMain