From 4e8bf9a348242bc456e45cc949ef94797f173447 Mon Sep 17 00:00:00 2001
From: Karl Williamson <khw@cpan.org>
Date: Thu, 18 Jun 2020 18:29:32 -0600
Subject: [PATCH] perldelta: Update advice for z/OS

---
 pod/perldelta.pod | 14 ++++++++++++--
 1 file changed, 12 insertions(+), 2 deletions(-)

diff --git a/pod/perldelta.pod b/pod/perldelta.pod
index 0e7a275439ba..485c04a95810 100644
--- a/pod/perldelta.pod
+++ b/pod/perldelta.pod
@@ -1388,8 +1388,18 @@ Only static builds (the default) build reliably
 
 =item *
 
-Threaded builds have problems with mutexes during critical sections, so
-use at your own risk
+When using locales, z/OS does not handle the C<LC_MESSAGES> category
+properly, so when compiling perl, you should add the following to your
+F<Configure> options
+
+ ./Configure <other options> -Accflags=-DNO_LOCALE_MESSAGES
+
+=item *
+
+z/OS does not support locales with threads, so when compiling a threaded
+perl, you should add the following to your F<Configure> options
+
+ ./Configure <other Configure options> -Accflags=-DNO_LOCALE
 
 =item *