--- tools/lldb/source/Host/Makefile.orig	2015-07-14 20:25:19 UTC
+++ tools/lldb/source/Host/Makefile
@@ -34,6 +34,11 @@ $(eval $(call DIR_SOURCES,posix))
 $(eval $(call DIR_SOURCES,freebsd))
 endif
 
+ifneq (,$(filter $(HOST_OS), BSDSUniX))
+$(eval $(call DIR_SOURCES,posix))
+$(eval $(call DIR_SOURCES,bsdsunix))
+endif
+
 ifeq ($(HOST_OS),MingW)
 $(eval $(call DIR_SOURCES,windows))
 endif