Patch for `automake` from `native` plugin of MXE, issue #2140

automake-1-avoids-deprecated-syntax.patch

This file is part of MXE. See LICENSE.md for licensing information.

Contains ad hoc patches for cross building.

From 0000000000000000000000000000000000000000 Mon Sep 17 00:00:00 2001
From: Patryk (PsychoX) Ludwikowski <[email protected]>
Date: Sun, 10 Jun 2018 06:49:41 +0000
Subject: [PATCH 1/1] Avoids deprecated syntax that causes failure in newer versions of Perl.

Contains patch for using too new Perl. Avoids deprecated syntax that causes failure in newer versions of Perl. More info at https://github.com/mxe/mxe/issues/2140

Backported from:
http://git.savannah.gnu.org/cgit/automake.git/commit/?id=13f00eb4493c217269b76614759e452d8302955e
Original author: Paul Eggert <[email protected]>
Signed-off-by: Adam Duskett <[email protected]>

diff --git a/bin/automake.in b/bin/automake.in
index 1111111..2222222 100644
--- a/bin/automake.in
+++ b/bin/automake.in
@@ -3878,7 +3878,7 @@ 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;
 }