build system: allow overriding the build's timestamp
authorPatrick Georgi <pgeorgi@google.com>
Thu, 28 Jan 2016 13:46:18 +0000 (14:46 +0100)
committerPatrick Georgi <pgeorgi@google.com>
Sat, 6 Feb 2016 22:30:31 +0000 (23:30 +0100)
commit2f5d4a485efd9d9577e6cd2eba5d730a94105b95
treeba412f4e206f75215b3763cfe204e4e0f32d18e2
parentdbc807179fea7438efa3374584310727ce44bbc9
build system: allow overriding the build's timestamp

This allows reproducible builds (same source and same compiler produce
bit-identical results) and also allows coordinating the timestamp across
multiple projects, eg. with another firmware.

Signed-off-by: Patrick Georgi <pgeorgi@google.com>
make_helpers/build_macros.mk