From 2a86814bb8c45f6cb65092a44c0327460772c34d Mon Sep 17 00:00:00 2001
From: Wim Taymans <wtaymans@redhat.com>
Date: Fri, 24 Nov 2017 17:23:40 +0100
Subject: [PATCH] Only define memfd_create when not already defined

---
 config.h.meson                | 1 +
 meson.build                   | 4 ++++
 src/pipewire/memfd-wrappers.h | 2 ++
 3 files changed, 7 insertions(+)

diff --git a/config.h.meson b/config.h.meson
index 0d5add753..e0ff4f616 100644
--- a/config.h.meson
+++ b/config.h.meson
@@ -445,3 +445,4 @@
 #mesondefine HAVE_ALARM
 #mesondefine HAVE_DECL_LOCALTIME_R
 #mesondefine HAVE_DECL_STRSIGNAL
+#mesondefine HAVE_MEMFD_CREATE
diff --git a/meson.build b/meson.build
index 29c52db4b..7943abd88 100644
--- a/meson.build
+++ b/meson.build
@@ -117,6 +117,10 @@ if cc.has_function('mkstemp', prefix : '#include <stdlib.h>')
   cdata.set('HAVE_MKSTEMP', 1)
 endif
 
+if cc.has_function('memfd_create', prefix : '#include <sys/mman.h>')
+  cdata.set('HAVE_MEMFD_CREATE', 1)
+endif
+
 configure_file(input : 'config.h.meson',
   output : 'config.h',
   configuration : cdata)
diff --git a/src/pipewire/memfd-wrappers.h b/src/pipewire/memfd-wrappers.h
index 05958fe40..860e3960c 100644
--- a/src/pipewire/memfd-wrappers.h
+++ b/src/pipewire/memfd-wrappers.h
@@ -20,6 +20,7 @@
 #include <sys/syscall.h>
 #include <fcntl.h>
 
+#ifndef HAVE_MEMFD_CREATE
 /*
  * No glibc wrappers exist for memfd_create(2), so provide our own.
  *
@@ -32,6 +33,7 @@ static inline int
 memfd_create(const char *name, unsigned int flags) {
 	return syscall(SYS_memfd_create, name, flags);
 }
+#endif
 
 /* memfd_create(2) flags */