buildroot/package/libdrm/0003-meson.build-fix-intel-atomics-detection.patch

From 00f6ac3c24f36fa07fa93f4a89ee873edf125098 Mon Sep 17 00:00:00 2001
From: Peter Seiderer <ps.report@gmx.net>
Date: Mon, 16 Jul 2018 23:01:40 +0200
Subject: [PATCH] meson.build: fix intel atomics detection

Use the stronger compiler.link() test (instead of the weaker
compiler.compile()) to fix the intel atomics detection.

Fixes false positive in case of sparc compile (buildroot toolchain).

Upstream suggested: https://lists.freedesktop.org/archives/dri-devel/2018-July/183885.html
Signed-off-by: Peter Seiderer <ps.report@gmx.net>
---
 meson.build | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/meson.build b/meson.build
index 9b443a5..3c8afb6 100644
--- a/meson.build
+++ b/meson.build
@@ -49,9 +49,10 @@ intel_atomics = false
 lib_atomics = false

 dep_atomic_ops = dependency('atomic_ops', required : false)
-if cc.compiles('''
+if cc.links('''
     int atomic_add(int *i) { return __sync_add_and_fetch (i, 1); }
     int atomic_cmpxchg(int *i, int j, int k) { return __sync_val_compare_and_swap (i, j, k); }
+    int main() { }
     ''',
     name : 'Intel Atomics')
   intel_atomics = true
--
2.18.0