scripts/kernel-doc: Use $KBUILD_BUILD_TIMESTAMP as man page date
Together with the preceding changes, this allows man pages to be built
reproducibly.
Signed-off-by: Ben Hutchings <ben@decadent.org.uk>
Signed-off-by: Jonathan Corbet <corbet@lwn.net>
diff --git a/scripts/kernel-doc b/scripts/kernel-doc
index 71ada00..0ac1a07 100755
--- a/scripts/kernel-doc
+++ b/scripts/kernel-doc
@@ -253,11 +253,20 @@
my $blankline = $blankline_man;
my $modulename = "Kernel API";
my $function_only = 0;
+my $show_not_found = 0;
+
+my @build_time;
+if (defined($ENV{'KBUILD_BUILD_TIMESTAMP'}) &&
+ (my $seconds = `date -d"${ENV{'KBUILD_BUILD_TIMESTAMP'}}" +%s`) ne '') {
+ @build_time = gmtime($seconds);
+} else {
+ @build_time = localtime;
+}
+
my $man_date = ('January', 'February', 'March', 'April', 'May', 'June',
'July', 'August', 'September', 'October',
- 'November', 'December')[(localtime)[4]] .
- " " . ((localtime)[5]+1900);
-my $show_not_found = 0;
+ 'November', 'December')[$build_time[4]] .
+ " " . ($build_time[5]+1900);
# Essentially these are globals.
# They probably want to be tidied up, made more localised or something.