commit 06332732a48d1b229cc5886cc45f27bb2ccbe8d7
author Ying Wang <wangying@google.com> Tue Jul 21 16:22:51 2015 -0700
committer Ying Wang <wangying@google.com> Tue Jul 21 16:39:46 2015 -0700
tree 91a42ac288c2d9fdc64e92ce9d785bd99fe7730b
parent 65259743e45886a2941771716b92db91de35ea8c

Create OUT_DIR before writing build_number.txt.

Change-Id: I6a84ec59194c48f4291480cb0c94db0da488518c

core/main.mk

diff --git a/core/main.mk b/core/main.mk
index 7f22d76..f9b9d95 100644
--- a/core/main.mk
+++ b/core/main.mk
@@ -96,7 +96,7 @@
 # Write the build number to a file so it can be read back in
 # without changing the command line every time.  Avoids rebuilds
 # when using ninja.
-$(shell echo -n $(BUILD_NUMBER) > $(OUT_DIR)/build_number.txt)
+$(shell mkdir -p $(OUT_DIR) && echo -n $(BUILD_NUMBER) > $(OUT_DIR)/build_number.txt)
 BUILD_NUMBER_FROM_FILE := $$(cat $(OUT_DIR)/build_number.txt)
 
 # CTS-specific config.