From 270dd293200b216545ea594937a79a88bc1e0bb0 Mon Sep 17 00:00:00 2001
From: Paul Sokolovsky <pfalcon@users.sourceforge.net>
Date: Tue, 19 Apr 2016 11:40:57 +0300
Subject: [PATCH] unix: Make sure build dir exists before accessing it for
 freezing upip.

---
 unix/Makefile | 1 +
 1 file changed, 1 insertion(+)

diff --git a/unix/Makefile b/unix/Makefile
index dbb88b7147..e534ccff5b 100644
--- a/unix/Makefile
+++ b/unix/Makefile
@@ -248,6 +248,7 @@ UPIP_TARBALL := $(shell ls -1 -v ../tools/micropython-upip-*.tar.gz | tail -n1)
 
 $(BUILD)/frozen_upip/upip.py: $(UPIP_TARBALL)
 	$(ECHO) "MISC Preparing upip as frozen module"
+	$(Q)mkdir -p $(BUILD)
 	$(Q)rm -rf $(BUILD)/micropython-upip-*
 	$(Q)tar -C $(BUILD) -xz -f $^
 	$(Q)rm -rf $(dir $@)