guix/gnu/packages/patches/efl-mesa-compat.patch

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Fix build on 32-bit architectures with Mesa 18.3. Patch taken from upstream:
https://git.enlightenment.org/core/efl.git/commit/?id=0d2b624f1e24240a1c4e651aa1cfe9a8dd10a573
diff --git a/src/lib/evas/Evas_GL.h b/src/lib/evas/Evas_GL.h
index b6b642400f..4f67b1695f 100644
--- a/src/lib/evas/Evas_GL.h
+++ b/src/lib/evas/Evas_GL.h
@@ -4272,9 +4272,11 @@ typedef signed int GLfixed; // Changed khronos_int32_t
#ifndef GL_ES_VERSION_2_0
/* GL types for handling large vertex buffer objects */
-#include <stddef.h>
+# ifndef GL_VERSION_1_5
+# include <stddef.h>
typedef ptrdiff_t GLintptr; // Changed khronos_intptr_t
typedef ptrdiff_t GLsizeiptr; // Changed khronos_ssize_t
+# endif
#endif
/* Some definitions from GLES 3.0.