fix: let util/mkbuildinf.pl use SOURCE_DATE_EPOCH, even if it's zero

Doing this allows reproducible builds, for those who want this. Fixes openssl#25475 Reviewed-by: Tomas Mraz <[email protected]> Reviewed-by: Tom Cosgrove <[email protected]> (Merged from openssl#25699)
a-mair · Oct 17, 2024 · 7b36037 · 7b36037
1 parent 6bb62ab
commit 7b36037
Showing 1 changed file with 3 additions and 1 deletion.
diff --git a/util/mkbuildinf.pl b/util/mkbuildinf.pl
@@ -12,7 +12,9 @@
 my ($cflags, $platform) = @ARGV;
 $cflags = "compiler: $cflags";
 
-my $date = gmtime($ENV{'SOURCE_DATE_EPOCH'} || time()) . " UTC";
+# Use the value of the envvar SOURCE_DATE_EPOCH, even if it's
+# zero or the empty string.
+my $date = gmtime($ENV{'SOURCE_DATE_EPOCH'} // time()) . " UTC";
 
 print <<"END_OUTPUT";
 /*