@ -82,6 +82,8 @@ else ifeq ($(LOCAL_OS),windows)
TARGET_OS ?= windows
else ifeq ($(LOCAL_OS),freebsd)
TARGET_OS ?= freebsd
else ifeq ($(LOCAL_OS),openbsd)
TARGET_OS ?= openbsd
else
$(error This system's OS $(LOCAL_OS) isn't supported)
endif