AutoSplit will fail to create an index for files whose modification time is 0
because its default time for a non-existent index is 1.  Set this default time
to -1 instead.

--- perl-5.16.1/cpan/AutoLoader/lib/AutoSplit.pm.orig	2012-02-14 22:44:36.000000000 -0600
+++ perl-5.16.1/cpan/AutoLoader/lib/AutoSplit.pm	2015-09-09 19:59:22.208708921 -0500
@@ -361,7 +361,7 @@
     my($al_idx_file) = catfile($autodir, $modpname, $IndexFile);
 
     if ($check_mod_time){
-	my($al_ts_time) = (stat("$al_idx_file"))[9] || 1;
+	my($al_ts_time) = (stat("$al_idx_file"))[9] || -1;
 	if ($al_ts_time >= $pm_mod_time and
 	    $al_ts_time >= $self_mod_time){
 	    print "AutoSplit skipped ($al_idx_file newer than $filename)\n"
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<tr><td><span title='2023-08-26 11:30:27 +0800'>2023-08-26</span></td><td><a href='/guix/commit/gnu/packages/pkg-config.scm?id=eeb71d778f149834015858467fbeeb1276d96d1d'>gnu: pkgconf: Update to 2.0.2.</a><span class='msg-avail'>...<span class='msg-tooltip'>* gnu/packages/pkg-config.scm (pkgconf): Update to 2.0.2.

Signed-off-by: 宋文武 &lt;iyzsong@member.fsf.org&gt;
</span></span></td><td>Zheng Junjie</td></tr>
<tr><td><span title='2023-03-06 21:27:06 -0500'>2023-03-06</span></td><td><a href='/guix/commit/gnu/packages/pkg-config.scm?id=ff5f34ae757d709987896d6164bf125319a0f764'>gnu: perl-extutils-pkgconfig: Support cross-compilation.</a><span class='msg-avail'>...<span class='msg-tooltip'>* guix/search-paths.scm ($PKG_CONFIG_PATH): New variable.
* gnu/packages/pkg-config.scm (%pkg-config): Use it.
* gnu/packages/perl.scm (perl-extutils-pkgconfig-for-target): New procedure.
(perl-extutils-pkgconfig): Turn into a syntax that
conditionally expands to...
(cross-perl-extutils-pkgconfig): ... this when %current-target-system is set,
or...
(%perl-extutils-pkgconfig): ... this in a native compilation context.
[arguments]: New field.
[propagated-inputs]: Turn into...
[native-inputs]: ... this.
[native-search-paths]: New field.
</span></span></td><td>Maxim Cournoyer</td></tr>
<tr><td><span title='2022-09-13 02:04:59 -0400'>2022-09-13</span></td><td><a href='/guix/commit/gnu/packages/pkg-config.scm?id=eda94d13d4b1845c398ceee34c6bff7364bceaa6'>gnu: Add pkgconf.</a><span class='msg-avail'>...<span class='msg-tooltip'>* gnu/packages/pkg-config.scm (pkgconf): New variable.
</span></span></td><td>Maxim Cournoyer</td></tr>