diff -ruN mesa-26.1.4/meson.build mesa-26.1.4-banan_os/meson.build
--- mesa-26.1.4/meson.build	2026-07-01 17:16:13.000000000 +0300
+++ mesa-26.1.4-banan_os/meson.build	2026-07-05 12:36:39.810545892 +0300
@@ -156,7 +156,7 @@
 
 with_any_opengl = with_opengl or with_gles1 or with_gles2
 
-system_has_kms_drm = ['openbsd', 'netbsd', 'freebsd', 'gnu/kfreebsd', 'dragonfly', 'linux', 'sunos', 'android', 'managarm'].contains(host_machine.system())
+system_has_kms_drm = ['openbsd', 'netbsd', 'freebsd', 'gnu/kfreebsd', 'dragonfly', 'linux', 'sunos', 'android', 'managarm', 'banan_os'].contains(host_machine.system())
 
 gallium_drivers = get_option('gallium-drivers')
 if gallium_drivers.contains('auto')
diff -ruN mesa-26.1.4/src/gallium/frontends/dri/drisw.c mesa-26.1.4-banan_os/src/gallium/frontends/dri/drisw.c
--- mesa-26.1.4/src/gallium/frontends/dri/drisw.c	2026-07-01 17:16:13.000000000 +0300
+++ mesa-26.1.4-banan_os/src/gallium/frontends/dri/drisw.c	2026-07-05 12:36:40.392717334 +0300
@@ -43,12 +43,12 @@
 #include "dri_helpers.h"
 #include "dri_query_renderer.h"
 
-#include "util/libsync.h"
-
 #ifdef HAVE_LIBDRM
 #include <xf86drm.h>
 #endif
 
+#include "util/libsync.h"
+
 DEBUG_GET_ONCE_BOOL_OPTION(swrast_no_present, "SWRAST_NO_PRESENT", false);
 
 static inline void
diff -ruN mesa-26.1.4/src/glx/drisw_glx.c mesa-26.1.4-banan_os/src/glx/drisw_glx.c
--- mesa-26.1.4/src/glx/drisw_glx.c	2026-07-01 17:16:13.000000000 +0300
+++ mesa-26.1.4-banan_os/src/glx/drisw_glx.c	2026-07-05 12:36:40.748941796 +0300
@@ -23,6 +23,7 @@
 
 #if defined(GLX_DIRECT_RENDERING) && (!defined(GLX_USE_APPLEGL) || defined(GLX_USE_APPLE))
 
+#include <stddef.h>
 #include <xcb/xcb.h>
 #include <xcb/xproto.h>
 #include <xcb/shm.h>