From 15bc9fbfc63b936ea61bbbeaf3b6fb9fefbb7cd3 Mon Sep 17 00:00:00 2001
From: galternat <galternat.twins223@simplelogin.com>
Date: Sun, 11 Oct 2026 15:39:07 +0200
Subject: [PATCH] kdrive/modesetting: use the drm_defines.h GBM fallbacks

ms_gbm.c uses GBM_BO_USE_FRONT_RENDERING, which older libgbm versions
accepted by meson don't provide, so Xmodesetting fails to build against
them. Include drm_defines.h, which defines it to 0 in that case, as the
Xorg modesetting driver does.

Assisted-by: Claude:claude-opus-5-5
Signed-off-by: galternat <galternat.twins223@simplelogin.com>
---
 hw/kdrive/modesetting/ms_gbm.c | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/hw/kdrive/modesetting/ms_gbm.c b/hw/kdrive/modesetting/ms_gbm.c
index 64ac7f56cf..5dfb756299 100644
--- a/hw/kdrive/modesetting/ms_gbm.c
+++ b/hw/kdrive/modesetting/ms_gbm.c
@@ -9,6 +9,8 @@
 
 #include <drm_fourcc.h>
 
+#include "drm_defines.h"
+
 /* TODO: Stuff that should be in msutil */
 
 typedef struct {