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.
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<tr><td><span title='2024-06-02 18:04:34 +0300'>2024-06-02</span></td><td><a href='/guix/commit/gnu/services/nix.scm?id=bc06affabcf68bbe93e9afee13bef8cc8c6336a2'>services: nix: Fix activation.</a><span class='msg-avail'>...<span class='msg-tooltip'>This commit follows 797be0ea5c3703ad96acd32c98dca5f946cf5c95.

Reported by kiasoc5 &lt;kiasoc5@disroot.org&gt; at
&lt;https://lists.gnu.org/archive/html/help-guix/2024-05/msg00185.html&gt;.

* gnu/services/nix.scm (nix-activation): Avoid provisioning the store if it
already exists.

Change-Id: I159e8af5d7bd6ce62857b356d6e9ac68fe16acf4
</span></span></td><td>Oleg Pykhalov</td></tr>
<tr><td><span title='2024-05-29 06:16:24 +0300'>2024-05-29</span></td><td><a href='/guix/commit/gnu/services/nix.scm?id=797be0ea5c3703ad96acd32c98dca5f946cf5c95'>services: nix: Mount Nix store read only.</a><span class='msg-avail'>...<span class='msg-tooltip'>* gnu/services/nix.scm (nix-shepherd-service): Add requirements.
(%nix-store-directory): New variable.
(nix-service-type): Add file-system-service-type extension.

Change-Id: I18a5d58c92c1f2b5b6dcecc3d5b439cc15bf4e49
</span></span></td><td>Oleg Pykhalov</td></tr>
<tr><td><span title='2022-12-15 10:13:24 +0000'>2022-12-15</span></td><td><a href='/guix/commit/gnu/services/nix.scm?id=f4dc53881b79b324ce7da731ac579a41c5078a48'>services: nix: Fix nix-shepherd-service.</a><span class='msg-avail'>...<span class='msg-tooltip'>* gnu/services/nix.scm (nix-shepherd-service): Un-gexp build-directory.
</span></span></td><td>Christopher Baines</td></tr>
<tr><td><span title='2022-12-13 17:46:39 +0100'>2022-12-13</span></td><td><a href='/guix/commit/gnu/services/nix.scm?id=22acc0b0291cc067a6a3ce36c7ca8e5f68fe4db6'>services: nix: Add more configuration fields.</a><span class='msg-avail'>...<span class='msg-tooltip'>* gnu/services/nix.scm (&lt;nix-configuration&gt;)[build-directory]: New field.
(nix-service-etc, nix-shepherd-service): Take them into account.
* doc/guix.texi (Nix): Update it.

Signed-off-by: Ludovic Courtès &lt;ludo@gnu.org&gt;
</span></span></td><td>Petr Hodina</td></tr>