From 814801d3211a7e0c1abebbca66c699590e18072d Mon Sep 17 00:00:00 2001
From: Michael Vines <mvines@gmail.com>
Date: Sun, 2 Dec 2018 12:02:03 -0800
Subject: [PATCH] Restore OS macro

---
 sdk/bpf/bpf.mk | 1 +
 1 file changed, 1 insertion(+)

diff --git a/sdk/bpf/bpf.mk b/sdk/bpf/bpf.mk
index be6f01cef7..fe5f1cdd0c 100644
--- a/sdk/bpf/bpf.mk
+++ b/sdk/bpf/bpf.mk
@@ -12,6 +12,7 @@ INC_DIRS ?=
 SRC_DIR ?= ./src
 TEST_DIR ?= ./test
 OUT_DIR ?= ./out
+OS := $(uname)
 
 ifeq ($(DOCKER),1)
 LLVM_DIR = $(LOCAL_PATH)llvm-docker