nixpkgs/pkgs/development/libraries/mesa/aarch64-darwin.patch

From 8ac29b952e638ec1ea8c3734a3b91253e50c336d Mon Sep 17 00:00:00 2001
From: Jeremy Huddleston Sequoia <jeremyhu@apple.com>
Date: Sun, 24 Jan 2021 21:10:29 -0800
Subject: [PATCH 4/4] Hack to address build failure when using newer macOS SDKs
 with older deployment targets

Signed-off-by: Jeremy Huddleston Sequoia <jeremyhu@apple.com>
---
 include/c11/threads_posix.h | 8 +++++++-
 1 file changed, 7 insertions(+), 1 deletion(-)

diff --git a/include/c11/threads_posix.h b/include/c11/threads_posix.h
index 45cb6075e6e..355d725f7da 100644
--- a/include/c11/threads_posix.h
+++ b/include/c11/threads_posix.h
@@ -382,7 +382,13 @@ tss_set(tss_t key, void *val)
 
 /*-------------------- 7.25.7 Time functions --------------------*/
 // 7.25.6.1
-#ifndef HAVE_TIMESPEC_GET
+#if !defined(HAVE_TIMESPEC_GET) || defined(__APPLE__)
+
+#ifdef __APPLE__
+#include <time.h>
+#define timespec_get(ts, b) mesa_timespec_get(ts, b)
+#endif
+
 static inline int
 timespec_get(struct timespec *ts, int base)
 {
-- 
2.29.2 (Apple Git-129)