guix - Wojtek's customized Guix

From https://github.com/xbmc/xbmc/pull/22291/commits/5449652abf0bb9dddd0d796de4120e60f19f89a5

From 5449652abf0bb9dddd0d796de4120e60f19f89a5 Mon Sep 17 00:00:00 2001
From: Alan Swanson <reiver@improbability.net>
Date: Mon, 19 Dec 2022 21:28:13 +0200
Subject: [PATCH] Work around Mesa eglchromium.h removal

I have polished Alan's snippet to buildable state and tested
on Kodi from Debian sid.

Signed-off-by: Vasyl Gello <vasek.gello@gmail.com>
---
 cmake/modules/FindEGL.cmake       | 6 ++++++
 xbmc/windowing/X11/GLContextEGL.h | 4 ++++
 2 files changed, 10 insertions(+)

diff --git a/cmake/modules/FindEGL.cmake b/cmake/modules/FindEGL.cmake
index b00fe08a25f95..a68a8db901222 100644
--- a/cmake/modules/FindEGL.cmake
+++ b/cmake/modules/FindEGL.cmake
@@ -9,6 +9,7 @@
 # EGL_INCLUDE_DIRS - the EGL include directory
 # EGL_LIBRARIES - the EGL libraries
 # EGL_DEFINITIONS - the EGL definitions
+# HAVE_EGLEXTANGLE - if eglext_angle.h exists else use eglextchromium.h
 #
 # and the following imported targets::
 #
@@ -35,6 +36,11 @@ if(EGL_FOUND)
   set(EGL_LIBRARIES ${EGL_LIBRARY})
   set(EGL_INCLUDE_DIRS ${EGL_INCLUDE_DIR})
   set(EGL_DEFINITIONS -DHAS_EGL=1)
+  include(CheckIncludeFiles)
+  check_include_files("EGL/egl.h;EGL/eglext.h;EGL/eglext_angle.h" HAVE_EGLEXTANGLE)
+  if(HAVE_EGLEXTANGLE)
+    list(APPEND EGL_DEFINITIONS "-DHAVE_EGLEXTANGLE=1")
+  endif()
 
   if(NOT TARGET EGL::EGL)
     add_library(EGL::EGL UNKNOWN IMPORTED)
diff --git a/xbmc/windowing/X11/GLContextEGL.h b/xbmc/windowing/X11/GLContextEGL.h
index 99a6a9024e8c6..afea0b7c43eac 100644
--- a/xbmc/windowing/X11/GLContextEGL.h
+++ b/xbmc/windowing/X11/GLContextEGL.h
@@ -13,7 +13,11 @@
 #include "threads/CriticalSection.h"
 
 #include <EGL/eglext.h>
+#ifdef HAVE_EGLEXTANGLE
+#include <EGL/eglext_angle.h>
+#else
 #include <EGL/eglextchromium.h>
+#endif
 #include <X11/Xutil.h>
 
 class CGLContextEGL : public CGLContext