Based on build failure in Fedora 23 [1], automake has some testsuite
failures against newer perl (currently Perl v5.22). Its because of new
Perl warning:
$ automake
Unescaped left brace in regex is deprecated, passed through in regex;
marked by <-- HERE in m/\${ <-- HERE ([^ \t=:+{}]+)}/ at
/usr/bin/automake line 3936.
Please consider the attached patch.
[1] https://bugzilla.redhat.com/attachment.cgi?id=1046458
Pavel
>From 34163794a58b5bd91c5d6bd9adf5437571c7a479 Mon Sep 17 00:00:00 2001
From: Pavel Raiskup <prais...@redhat.com>
Date: Tue, 7 Jul 2015 10:54:24 +0200
Subject: [PATCH] bin/automake: escape '{' in regexp pattern
Based on perlre(1) documentation:
.. in Perl v5.26, literal uses of a curly bracket will be required
to be escaped, say by preceding them with a backslash ("\{" ) or
enclosing them within square brackets ("[{]") ..
References:
https://bugzilla.redhat.com/1239379
* bin/automake.in (substitute_ac_subst_variables): Escape the
occurrence of '{' character.
---
bin/automake.in | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/bin/automake.in b/bin/automake.in
index 0c29184..c294ced 100644
--- a/bin/automake.in
+++ b/bin/automake.in
@@ -3898,7 +3898,7 @@ sub substitute_ac_subst_variables_worker
sub substitute_ac_subst_variables
{
my ($text) = @_;
- $text =~ s/\${([^ \t=:+{}]+)}/substitute_ac_subst_variables_worker ($1)/ge;
+ $text =~ s/\$\{([^ \t=:+{}]+)}/substitute_ac_subst_variables_worker ($1)/ge;
return $text;
}
--
2.1.0
