[PATCH 2/2] meson: fix CONFIG_ATOMIC128 check

[marcandre . lureau]

From: Marc-André Lureau <marcandre.lureau@redhat.com>

testfile.c: In function 'main':
testfile.c:5:11: error: incorrect number of arguments to function 
'__atomic_load'
    5 |       y = __atomic_load(&x, 0);
      |           ^~~~~~~~~~~~~
testfile.c:6:7: error: argument 2 of '__atomic_store' must be a pointer type
    6 |       __atomic_store(&x, y, 0);
      |       ^~~~~~~~~~~~~~
testfile.c:7:7: error: argument 3 of '__atomic_compare_exchange' must be a 
pointer type
    7 |       __atomic_compare_exchange(&x, &y, x, 0, 0, 0);
      |       ^~~~~~~~~~~~~~~~~~~~~~~~~

And it must be linked with -latomic.

Signed-off-by: Marc-André Lureau <marcandre.lureau@redhat.com>
---
 meson.build | 12 ++++++++----
 1 file changed, 8 insertions(+), 4 deletions(-)

diff --git a/meson.build b/meson.build
index a9ec3974bc67..a3d8af7a501b 100644
--- a/meson.build
+++ b/meson.build
@@ -1841,13 +1841,17 @@ if has_int128
     int main(void)
     {
       unsigned __int128 x = 0, y = 0;
-      y = __atomic_load(&x, 0);
-      __atomic_store(&x, y, 0);
-      __atomic_compare_exchange(&x, &y, x, 0, 0, 0);
+      __atomic_load(&x, &y, 0);
+      __atomic_store(&x, &y, 0);
+      __atomic_compare_exchange(&x, &y, &x, 0, 0, 0);
       return 0;
-    }''')
+    }''', args: ['-latomic'])
 
   config_host_data.set('CONFIG_ATOMIC128', has_atomic128)
+  if has_atomic128
+    add_global_link_arguments('-latomic',
+                              native: false, language: ['c', 'cpp', 'objc'])
+  endif
 
   if not has_atomic128
     has_cmpxchg128 = cc.links('''
-- 
2.35.1.273.ge6ebfd0e8cbb