Make 'with_fallback' use 'use' instead of 'require'

This enables us to require module versions, and to fall back to a
bundled version if the system version is too low.

Reviewed-by: Rich Salz <rsalz@openssl.org>
(Merged from https://github.com/openssl/openssl/pull/6682)

diff --git a/util/perl/with_fallback.pm b/util/perl/with_fallback.pm
index 2af1d5fbd50d08fd5c77f9fb2308cb2f835a214e..fc5638ddf0db7e686d729a9bd4fe454e947246ee 100644 (file)
--- a/util/perl/with_fallback.pm
+++ b/util/perl/with_fallback.pm
@@ -8,15 +8,17 @@
 package with_fallback;
 
 sub import {
+    shift;
+
     use File::Basename;
     use File::Spec::Functions;
     foreach (@_) {
-       eval "require $_";
+       eval "use $_";
        if ($@) {
            unshift @INC, catdir(dirname(__FILE__),
                                  "..", "..", "external", "perl");
            my $transfer = "transfer::$_";
-           eval "require $transfer";
+           eval "use $transfer";
            shift @INC;
            warn $@ if $@;
        }