Description: add leading dot to filename in do() call
 otherwise this fails without dot in @INC
Origin: vendor
Forwarded: not-yet
Author: gregor herrmann <gregoa@debian.org>
Last-Update: 2018-06-24

Index: Math-GSL-0.39/Build.PL
===================================================================
--- a/Build.PL
+++ b/Build.PL
@@ -85,7 +85,7 @@ my $cleanup = qq{
 
 $ldflags = '-shared ' . $ldflags unless GSLBuilder::is_darwin();
 
-my $ver2func = do(catfile(qw/inc ver2func/));
+my $ver2func = do('./' . catfile(qw/inc ver2func/));
 
 unless (GSLBuilder::is_release()) {
     my $swig_ver = swig_version();