Set a fallback default value for SOURCE_DATE_EPOCH

This is used by some build tools to provide reproducible builds. See

  https://reproducible-builds.org/specs/source-date-epoch/

for more info.

Later, we'll want to set this to a more intelligent value (such as the
most recent mtime of any source file).
This commit is contained in:
Eelco Dolstra 2015-12-03 11:49:32 +01:00
parent b1acaffe67
commit f31fbadac3

View File

@ -184,6 +184,14 @@ installBin() {
# Initialisation.
# Set a fallback default value for SOURCE_DATE_EPOCH, used by some
# build tools to provide a deterministic substitute for the "current"
# time. Note that 1 = 1970-01-01 00:00:01. We don't use 0 because it
# confuses some applications.
export SOURCE_DATE_EPOCH
: ${SOURCE_DATE_EPOCH:=1}
# Wildcard expansions that don't match should expand to an empty list.
# This ensures that, for instance, "for i in *; do ...; done" does the
# right thing.