From fd34b17f9093293e95ea881849c7c3f37f5dc043 Mon Sep 17 00:00:00 2001
From: Ben Noordhuis <info@bnoordhuis.nl>
Date: Sat, 5 Mar 2022 10:12:26 +0100
Subject: [PATCH] zos: fix build breakage (#3513)

Introduced earlier today in commit f250c6c7. _SC_NPROCESSORS_ONLN does
not seem to be defined on that platform.
---
 src/unix/core.c | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/src/unix/core.c b/src/unix/core.c
index c0448b31e..459e3c917 100644
--- a/src/unix/core.c
+++ b/src/unix/core.c
@@ -1671,6 +1671,8 @@ unsigned int uv_available_parallelism(void) {
     rc = 1;
 
   return (unsigned) rc;
+#elif defined(__MVS__)
+  return 1;  /* TODO(bnoordhuis) Read from CSD_NUMBER_ONLINE_CPUS? */
 #else  /* __linux__ */
   long rc;