Use BUILD_NUMBER_FROM_FILE instead of BUILD_NUMBER in Make.
<Two phase commits> Since internal master code has more places that use
BUILD_NUMBER (mostly in vendor/) than AOSP (conflict). We can't
deprecate BUILD_NUMBER directly. Therefore, we try to switch to
BUILD_NUMBER_FROM_FILE as much as possible at first. Then we will do
a one-off deprecation for BUILD_NUMBER in internal master next step.
Test: m -j
Bug: b/70351683
Change-Id: I14ffee7381933c9fde14c4bde8c0c14e45fe98bf
diff --git a/core/version_defaults.mk b/core/version_defaults.mk
index 858384b..e83d6fa 100644
--- a/core/version_defaults.mk
+++ b/core/version_defaults.mk
@@ -271,6 +271,7 @@
# to soong_ui.
BUILD_DATETIME :=
+HAS_BUILD_NUMBER := true
ifndef BUILD_NUMBER
# BUILD_NUMBER should be set to the source control value that
# represents the current state of the source code. E.g., a
@@ -282,4 +283,5 @@
# from this date/time" value. Make it start with a non-digit so that
# anyone trying to parse it as an integer will probably get "0".
BUILD_NUMBER := eng.$(shell echo $${USER:0:6}).$(shell $(DATE) +%Y%m%d.%H%M%S)
+ HAS_BUILD_NUMBER := false
endif