--- Makefile.rules.orig	2014-06-20 19:00:41 UTC
+++ Makefile.rules
@@ -281,8 +281,8 @@ endif
 CPP.Defines :=
 ifeq ($(ENABLE_OPTIMIZED),1)
   BuildMode := Release
-  # Don't use -fomit-frame-pointer on Darwin or FreeBSD.
-  ifneq ($(HOST_OS), $(filter $(HOST_OS), Cygwin Darwin DragonFly FreeBSD GNU/kFreeBSD))
+  # Don't use -fomit-frame-pointer on Darwin, BSDSUniX or FreeBSD.
+  ifneq ($(HOST_OS), $(filter $(HOST_OS), Cygwin Darwin DragonFly BSDSUniX FreeBSD GNU/kFreeBSD))
     OmitFramePointer := -fomit-frame-pointer
   endif
 
@@ -1356,7 +1356,7 @@ LD.Flags += -Wl,-exported_symbol,_main
 endif
 endif
 
-ifeq ($(HOST_OS), $(filter $(HOST_OS), DragonFly Linux NetBSD FreeBSD GNU/kFreeBSD GNU))
+ifeq ($(HOST_OS), $(filter $(HOST_OS), DragonFly Linux NetBSD BSDSUniX FreeBSD GNU/kFreeBSD GNU))
 ifneq ($(ARCH), Mips)
   LD.Flags += -Wl,--version-script=$(LLVM_SRC_ROOT)/autoconf/ExportMap.map
 endif