There are two main causes that prevent reproducible build, both related to
the generated file "buildinf.h":
1. "buildinf.h" contains build host CFLAGS, containing various build
host references. We need to pass sanitized CFLAGS to the script
generating this file ("mkbuildinf.pl". )
2. We also need to modify the script "mkbuildinf.pl" itsel in order to
generate a build timestamp based on SOURCE_DATE_EPOCH, if present in
the environment.
Signed-off-by: Juro Bystricky <juro.bystricky@intel.com> Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>
