--- ffi/Makefile.osx.orig 2017-02-21 09:34:18.000000000 +0300
+++ ffi/Makefile.osx 2017-02-21 09:35:28.000000000 +0300
-CXX = clang++ -std=c++11 -stdlib=libc++
+CXX = %%CXX%% -std=c++11 -stdlib=libc++
CXXFLAGS = $(LLVM_CXXFLAGS)
LDFLAGS = $(LLVM_LDFLAGS)