handle conditional definition of PL_check_mutex

PL_check_mutex only exists on threading builds, so makedef.pl needs to
know about that conditionality to produce correct export lists.

diff --git a/makedef.pl b/makedef.pl
index 16d4f9a..002272b 100644 (file)
--- a/makedef.pl
+++ b/makedef.pl
@@ -347,6 +347,7 @@ unless ($define{'USE_ITHREADS'}) {
 
 unless ($define{'USE_ITHREADS'}) {
     ++$skip{$_} foreach qw(
+                   PL_check_mutex
                    PL_op_mutex
                    PL_regex_pad
                    PL_regex_padav