Удалось расшифровать, прочитав синтаксис Jira (
https://jira.atlassian.com/secure/Wi...pa?section=all)
Код:
diff -ur comms.c.orig zabbix-2.0.21/src/libs/zbxcomms/comms.c
--- comms.c.orig 2020-09-23 11:42:25.000000000 +0300
+++ zabbix-2.0.21/src/libs/zbxcomms/comms.c 2020-09-23 16:36:54.000000000 +0300
@@ -31,8 +31,12 @@
# define ZBX_SOCKLEN_T socklen_t
#endif
-#if !defined(SOCK_CLOEXEC)
-# define SOCK_CLOEXEC 0 /* SOCK_CLOEXEC is Linux-specific, available since 2.6.23 */
+#if !defined(OLD_LIBC_MODE)
+# if !defined(SOCK_CLOEXEC)
+# define SOCK_CLOEXEC 0 /* SOCK_CLOEXEC is Linux-specific, available since 2.6.23 */
+# endif
+#else
+# define SOCK_CLOEXEC 0
#endif
/******************************************************************************
