From 7943641180dfc2e0d77ddd7d8fa0a777e7868196 Mon Sep 17 00:00:00 2001
From: Michael Kerrisk <mtk.manpages@gmail.com>
Date: Fri, 12 Feb 2016 14:11:47 +0100
Subject: [PATCH] chmod.2: Update FTM requirements

There have been a number of changes in recent glibc versions

Signed-off-by: Michael Kerrisk <mtk.manpages@gmail.com>
---
 man2/chmod.2 | 7 ++++---
 1 file changed, 4 insertions(+), 3 deletions(-)

diff --git a/man2/chmod.2 b/man2/chmod.2
index 22007ad33..61b7e4850 100644
--- a/man2/chmod.2
+++ b/man2/chmod.2
@@ -56,10 +56,11 @@ Feature Test Macro Requirements for glibc (see
 .PD 0
 .BR fchmod ():
 .RS 4
-_BSD_SOURCE || _XOPEN_SOURCE\ >=\ 500
+/* Since glibc 2.16: */ _POSIX_C_SOURCE
+    || /* Glibc versions <= 2.19: */ _BSD_SOURCE
+    || /* Glibc versions <= 2.15: */ _XOPEN_SOURCE\ >=\ 500
 .\"    || _XOPEN_SOURCE\ &&\ _XOPEN_SOURCE_EXTENDED
-.br
-    || /* Since glibc 2.12: */ _POSIX_C_SOURCE\ >=\ 200809L
+    || /* Glibc 2.12 to 2.15: */ _POSIX_C_SOURCE\ >=\ 200809L
 .RE
 .PD
 .sp