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start moving a few files to use v5.36;
(this went through a full bulk)

# $OpenBSD: Trace.pm,v 1.5 2023/07/06 08:29:26 espie Exp $

# Copyright (c) 2007-2010 Steven Mestdagh <steven@openbsd.org>
# Copyright (c) 2012 Marc Espie <espie@openbsd.org>
#
# Permission to use, copy, modify, and distribute this software for any
# purpose with or without fee is hereby granted, provided that the above
# copyright notice and this permission notice appear in all copies.
#
# THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
# WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
# MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
# ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
# WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
# ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
# OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.

use v5.36;

package LT::Trace;
use Exporter 'import';
our @EXPORT = qw(tprint tsay);

sub print :prototype(&)($val)
{
	if (defined $ENV{TRACE_LIBTOOL}) {
		state $trace_file;
		if (!defined $trace_file) {
			open $trace_file, '>>', $ENV{TRACE_LIBTOOL};
		}
		if (defined $trace_file) {
			print $trace_file (&$val());
		}
	}
}

my $trace_level = 0;

sub set($, $t)
{
	$trace_level = $t;
}

sub tprint :prototype(&;$)($args, $level = 1)
{
	if ($trace_level >= $level) {
		print (&$args());
	}
}

sub tsay :prototype(&;$)($args, $level = 1)
{
	if ($trace_level >= $level) {
		say (&$args());
	}
}

1;