From 2d7169fd5f2467e6a6159978fcbd89478de85424 Mon Sep 17 00:00:00 2001
From: Matthias Clasen <mclasen@redhat.com>
Date: Wed, 7 Apr 2021 22:38:47 -0400
Subject: [PATCH] Work around compiler shortcomings on macOS

alias attributes don't work on Darwin, so
do without.
---
 gsk/ngl/fp16.c | 21 +++++++++++++++++++++
 1 file changed, 21 insertions(+)

diff --git a/gsk/ngl/fp16.c b/gsk/ngl/fp16.c
index 22453ae210..e9a8c8fbce 100644
--- a/gsk/ngl/fp16.c
+++ b/gsk/ngl/fp16.c
@@ -123,7 +123,28 @@ resolve_half_to_float4 (void)
 
 #else
 
+#ifdef __APPLE__
+// turns out aliases don't work on Darwin
+
+void
+float_to_half4 (const float f[4],
+                guint16     h[4])
+{
+  float_to_half4_c (f, h);
+}
+
+void
+half_to_float4 (const guint16 h[4],
+                float         f[4])
+{
+  half_to_float4_c (h, f);
+}
+
+#else
+
 void float_to_half4 (const float f[4], guint16 h[4]) __attribute__((alias ("float_to_half4_c")));
 void half_to_float4 (const guint16 h[4], float f[4]) __attribute__((alias ("half_to_float4_c")));
 
+#endif
+
 #endif  /* GTK_HAS_F16C */
-- 
2.30.2