The following commit broke compilation on my system: "dri_interface: Introduce DRI tokens for the texBuffer texture formats"

Problem seems to be here:
diff --git a/src/mesa/drivers/dri/r600/r600_texstate.c b/src/mesa/drivers/dri/r600/r600_texstate.c
index 8228cd6..33f6595 100644
--- a/src/mesa/drivers/dri/r600/r600_texstate.c
+++ b/src/mesa/drivers/dri/r600/r600_texstate.c
....
@@ -1116,5 +1116,5 @@ void r600SetTexBuffer2(__DRIcontext *pDRICtx, GLint target, GLint glx_texture_fo
 
 void r600SetTexBuffer(__DRIcontext *pDRICtx, GLint target, __DRIdrawable *dPriv)
 {
-        r600SetTexBuffer2(pDRICtx, target, GLX_TEXTURE_FORMAT_RGBA_EXT, dPriv);
+        r600SetTexBuffer2(pDRICtx, target, __DRM_TEXTURE_FORMAT_RGBA, dPriv);
 }

Looks like a typo.

Greetings,
Martin