diff -aur --no-dereference package.pristine/bin/packages/faust2/compiler/Makefile.unix package.new/bin/packages/faust2/compiler/Makefile.unix
--- package.pristine/bin/packages/faust2/compiler/Makefile.unix	2016-10-29 17:56:44.082520406 +0200
+++ package.new/bin/packages/faust2/compiler/Makefile.unix	2016-10-29 17:56:54.242445169 +0200
@@ -102,7 +102,7 @@
     CLANGLIBS=$(CLANGLIBSLIST)
     CXXFLAGS += -std=gnu++11
 
-else ifeq ($(LLVM_VERSION),$(filter $(LLVM_VERSION), 3.8.0 3.8.1))
+else ifeq ($(LLVM_VERSION),$(filter $(LLVM_VERSION), 3.8.0 3.8.1 3.9.1))
     LLVM_VERSION = LLVM_38
     CLANGLIBS=$(CLANGLIBSLIST)
     CXXFLAGS += -std=gnu++11