buildroot/package/mesa3d/0004-Fix-uClibc-build.patch

From 09ce52fe375a6fc1ccf51b6b691aaa2c3f53fbd5 Mon Sep 17 00:00:00 2001
From: Bernd Kuhls <bernd.kuhls@t-online.de>
Date: Fri, 3 Jun 2022 16:26:03 +0200
Subject: [PATCH] Fix uClibc build
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Fixes build errors with uClibc and gcc-9.3.0:

../src/gallium/drivers/lima/lima_texture.c:47:15: error: expected
 declaration specifiers or ‘...’ before ‘__builtin_offsetof’
   47 | static_assert(offsetof(lima_tex_desc, va) == 24,
 "lima_tex_desc->va offset isn't 24");

../src/egl/main/egldisplay.c: In function ‘_eglGetNativePlatformFromEnv’:
 ../src/egl/main/egldisplay.c:101:4: error: implicit declaration of
 function ‘static_assert’ [-Werror=implicit-function-declaration] 101 |
 static_assert(ARRAY_SIZE(egl_platforms) == _EGL_NUM_PLATFORMS,

../src/util/macros.h:74:4: error: implicit declaration of function
 ‘static_assert’ [-Werror=implicit-function-declaration]
   74 |    static_assert(cond, #cond); \
      |    ^~~~~~~~~~~~~

Upstream: https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/13898

Signed-off-by: Bernd Kuhls <bernd.kuhls@t-online.de>
---
 src/util/compiler.h | 10 ++++++++++
 src/util/macros.h   |  1 +
 2 files changed, 11 insertions(+)

diff --git a/src/util/compiler.h b/src/util/compiler.h
index d184ad455af..b5c56807acc 100644
--- a/src/util/compiler.h
+++ b/src/util/compiler.h
@@ -36,6 +36,16 @@
 
 #include <assert.h>
 
+/*
+ * C11 static_assert() macro
+ * assert.h only defines that name for C11 and above
+ */
+#if !defined(__cplusplus)
+#ifndef static_assert
+#define static_assert _Static_assert
+#endif
+#endif
+
 #include "util/macros.h"
 
 
diff --git a/src/util/macros.h b/src/util/macros.h
index 22b18303826..8f73ee72693 100644
--- a/src/util/macros.h
+++ b/src/util/macros.h
@@ -27,6 +27,7 @@
 #include <stddef.h>
 #include <stdint.h>
 #include <stdio.h>
+#include "util/compiler.h"
 
 /* Compute the size of an array */
 #ifndef ARRAY_SIZE
-- 
2.34.1