From b700bc59669939a9285255293e1bb70a5a35f736 Mon Sep 17 00:00:00 2001
From: Richard Levitte <levitte@openssl.org>
Date: Tue, 27 Feb 2018 21:01:59 +0100
Subject: [PATCH] configdata.pm: ensure $prefix is defined

Fixes #5471

Reviewed-by: Matt Caswell <matt@openssl.org>
(Merged from https://github.com/openssl/openssl/pull/5472)
---
 Configure | 1 +
 1 file changed, 1 insertion(+)

diff --git a/Configure b/Configure
index 3c40a0e25e..d78066b25b 100755
--- a/Configure
+++ b/Configure
@@ -2444,6 +2444,7 @@ _____
             my $prefix = '';
             $prefix = $config{cross_compile_prefix}
                 if grep { $var eq $_ } @user_crossable;
+            $prefix //= '';
             print '    ',$var,' ' x (16 - length $var),'= ',
                 (ref $config{$makevars{$var}} eq 'ARRAY'
                  ? join(' ', @{$config{$makevars{$var}}})
-- 
2.25.1