Adding gcc-specific disable of Wattributes in preparation for libcxx rebase.

Change-Id: Ida49761801e58b2475e006525e3ea2bbad3731af
diff --git a/core/binary.mk b/core/binary.mk
index 14c2b54..c5ac07e 100644
--- a/core/binary.mk
+++ b/core/binary.mk
@@ -1331,6 +1331,10 @@
 my_cppflags := $(call $(LOCAL_2ND_ARCH_VAR_PREFIX)convert-to-$(my_host)clang-flags,$(my_cppflags))
 my_asflags := $(call $(LOCAL_2ND_ARCH_VAR_PREFIX)convert-to-$(my_host)clang-flags,$(my_asflags))
 my_ldflags := $(call $(LOCAL_2ND_ARCH_VAR_PREFIX)convert-to-$(my_host)clang-flags,$(my_ldflags))
+else
+# gcc does not handle hidden functions in a manner compatible with LLVM libcxx
+# see b/27908145
+my_cflags += -Wno-attributes
 endif
 
 ifeq ($(my_fdo_build), true)