From d0e676ffff889dabfde4bf180a3f519eef9726bd Mon Sep 17 00:00:00 2001
From: Michael Kerrisk <mtk.manpages@gmail.com>
Date: Tue, 3 Jul 2007 10:45:00 +0000
Subject: [PATCH] Added note pointing to feature_test_macros.7 for a
 description of how feature test macro requirements should be specified in
 manual pages.

---
 man7/man-pages.7 | 6 +++++-
 1 file changed, 5 insertions(+), 1 deletion(-)

diff --git a/man7/man-pages.7 b/man7/man-pages.7
index 2018bb454..1dac33055 100644
--- a/man7/man-pages.7
+++ b/man7/man-pages.7
@@ -220,8 +220,12 @@ separate choices, and ellipses (\&...) can be repeated.
 For functions, it shows any required data declarations or
 .B #include
 directives, followed by the function declaration.
+
+Where a feature test macro must be defined in order to obtain
+the declaration of a function (or a variable) from a header file,
+then the SYNOPSIS should indicate this, as described in
+.BR feature_test_macros (7).
 .\" FIXME . Say something here about compiler options
-.\" FIXME . Say something here about feature test macros
 .TP
 .B DESCRIPTION
 gives an explanation of what the program, function, or format does.