--- perldl.conf.orig	2023-03-31 16:25:25 UTC
+++ perldl.conf
@@ -46,7 +46,7 @@
         WITH_POSIX_THREADS => undef,
 
         POSIX_THREADS_INC  => undef,  # '-I/usr/pthread/include'
-        POSIX_THREADS_LIBS => undef,  # '-L/usr/pthread -lpthreadGC2'
+        POSIX_THREADS_LIBS => '-lpthread',  # '-L/usr/pthread -lpthreadGC2'
 
         MALLOCDBG => undef,
 # {