getcwd.3: Add feature test macro requirements for getcwd()

Signed-off-by: Michael Kerrisk <mtk.manpages@gmail.com>

diff --git a/man3/getcwd.3 b/man3/getcwd.3
index b4d15b9dad2bb3dd8ec89c3c1f0f391223811879..e7e1ed09e9b2a0a344809961aebc6ef5c94c144d 100644 (file)
--- a/man3/getcwd.3
+++ b/man3/getcwd.3
@@ -51,6 +51,26 @@ _BSD_SOURCE || _XOPEN_SOURCE\ >=\ 500
 .br
 .BR get_current_dir_name ():
 _GNU_SOURCE
+.sp
+.BR getwd ():
+.ad l
+.RS 4
+.PD 0
+.TP 4
+Since glibc 2.12:
+.nf
+_BSD_SOURCE ||
+    (_XOPEN_SOURCE >= 500 ||
+        _XOPEN_SOURCE && _XOPEN_SOURCE_EXTENDED) &&
+    !(_POSIX_C_SOURCE >= 200809L || _XOPEN_SOURCE >= 700)
+.TP 4
+.fi
+Before glibc 2.12:
+_BSD_SOURCE || _XOPEN_SOURCE >= 500 ||
+_XOPEN_SOURCE\ &&\ _XOPEN_SOURCE_EXTENDED
+.PD
+.RE
+.ad b
 .SH DESCRIPTION
 These functions return a null-terminated string containing an
 absolute pathname that is the current working directory of