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feature_test_macros.7: _POSIX_C_SOURCE >= 200808 defines _ATFILE_SOURCE 

Since glibc 2.10, _POSIX_C_SOURCE >= 200808 defines _ATFILE_SOURCE

Signed-off-by: Michael Kerrisk <mtk.manpages@gmail.com>
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Michael Kerrisk 2009-12-13 17:29:25 +01:00
parent 6a56bbb532
commit 8a8c6284f7
1 changed files with 4 additions and 1 deletions
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5
man7/feature_test_macros.7
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@ -22,7 +22,7 @@
.\" Formatted or processed versions of this manual, if unaccompanied by
.\" the source, must acknowledge the copyright and authors of this work.
.\"
.TH FEATURE_TEST_MACROS 7 2009-04-03 "Linux" "Linux Programmer's Manual"
.TH FEATURE_TEST_MACROS 7 2009-12-13 "Linux" "Linux Programmer's Manual"
.SH NAME
feature_test_macros \- feature test macros
.SH SYNOPSIS
@ -259,6 +259,9 @@ Defining this macro with any value causes header files to expose
declarations of a range of functions with the suffix "at";
see
.BR openat (2).
Since glibc 2.10, this macro is also implicitly defined if
.BR _POSIX_C_SOURCE
is defined with a value greater than or equal to 200809L.
.TP
.B _GNU_SOURCE
Defining this macro (with any value) is equivalent to defining