From fe440cf5f4c9a177e025dda870ace8f093f6632b Mon Sep 17 00:00:00 2001
From: Igor Gnatenko <i.gnatenko.brain@gmail.com>
Date: Mon, 9 Jul 2018 12:34:14 +0200
Subject: [PATCH] build: check for renameat2()/copy_file_range() with
 _GNU_SOURCE

The config.h which we generate doesn't apply for checks and those
functions are available only when _GNU_SOURCE is defined.

Fixes: https://bugzilla.redhat.com/show_bug.cgi?id=1599252
Signed-off-by: Igor Gnatenko <i.gnatenko.brain@gmail.com>
---
 meson.build | 6 ++++--
 1 file changed, 4 insertions(+), 2 deletions(-)

diff --git a/meson.build b/meson.build
index f42ed16..9dd3ba0 100644
--- a/meson.build
+++ b/meson.build
@@ -74,8 +74,10 @@ conf.set('SIZEOF_UID_T', cc.sizeof('uid_t', prefix : '#include <sys/types.h>'))
 conf.set('SIZEOF_GID_T', cc.sizeof('gid_t', prefix : '#include <sys/types.h>'))
 
 foreach ident : [
-        ['renameat2',         '''#include <stdio.h>'''],
-        ['copy_file_range',   '''#include <sys/syscall.h>
+        ['renameat2',         '''#define _GNU_SOURCE
+                                 #include <stdio.h>'''],
+        ['copy_file_range',   '''#define _GNU_SOURCE
+                                 #include <sys/syscall.h>
                                  #include <unistd.h>'''],
 ]
         have = cc.has_function(ident[0], prefix : ident[1])
-- 
2.18.0.rc2