Add File::Spec to build prerequisites

It's required for run_perl() in tests.

diff --git a/Makefile.PL b/Makefile.PL
index 76041bc2281ffca7ba910ab26fdeedcad9b10066..46288e5af54f1a20e086221ff15e0a1f358fd154 100644 (file)
--- a/Makefile.PL
+++ b/Makefile.PL
@@ -87,6 +87,7 @@ my %PREREQ_PM = (
 my %BUILD_REQUIRES = (
  'Config'              => 0,
  'ExtUtils::MakeMaker' => 0,
+ 'File::Spec'          => 0,
  'Test::More'          => 0,
  'constant'            => 0,
  'lib'                 => 0,