Make h2ph's generated preamble require-able when empty.

$Config{ccsymbols} and friends are currently empty on Win32 and
undefined on VMS.

diff --git a/utils/h2ph.PL b/utils/h2ph.PL
index 4e99a7a..cd4b5a0 100644 (file)
--- a/utils/h2ph.PL
+++ b/utils/h2ph.PL
@@ -809,6 +809,7 @@ sub build_preamble_if_necessary
                    quotemeta($define{$_}), "\" } }\n\n";
            }
        }
+       print PREAMBLE "\n1;\n";  # avoid 'did not return a true value' when empty
     close PREAMBLE               or die "Cannot close $preamble:  $!";
 }