Perl 5.22 complaining about:

Unescaped left brace in regex is deprecated, passed through in regex;

marked by <-- HERE in m/\${ <-- HERE ([^ \t=:+{}]+)}/ at

/builds/userland/automake/automake-1.11.2/build/i386/bin/automake line 393

Should send this upstream.

--- automake-1.11.2/automake.in_orig 2016-03-16 10:45:17.884191948 -0700

+++ automake-1.11.2/automake.in 2016-03-16 10:46:39.539918802 -0700

@@ -4150,7 +4150,7 @@

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;

}