Subject: Re: [BUG -next] ./usr/include/cxl/features.h:11:10: fatal error: uuid/uuid.h: No such file or directory

From: Dave Jiang <[email-masked]>
Date: Fri, 28 Mar 2025 13:03:19 -0700

On 3/28/25 10:39 AM, Paul E. McKenney wrote:
> Hello!
> 
> In next-20250328 and next-20250327, allmodconfig builds get me:
> 
> ./usr/include/cxl/features.h:11:10: fatal error: uuid/uuid.h: No such file or directory
> 
> This file is apparently auto-generated, because when I change the #include
> to the more likely linux/uuid.h, my changes are overwritten by the build.
> 
> Gregory Price noted that something similar has happened recently and been fixed:
> 
> https://lore.kernel.org/all/[email-masked]/
> 
> Perhaps someone unfixed it?
> 
> 								Thanx, Paul

I can't get the powerpc cross build to build to reproduce the issue from next-20250328. Does the change below address the issue for you?

---
diff --git a/include/uapi/cxl/features.h b/include/uapi/cxl/features.h
index d6db8984889f..691eeda9c892 100644
--- a/include/uapi/cxl/features.h
+++ b/include/uapi/cxl/features.h
@@ -8,11 +8,7 @@
 #define _UAPI_CXL_FEATURES_H_
 
 #include <linux/types.h>
-#ifndef __KERNEL__
-#include <uuid/uuid.h>
-#else
 #include <linux/uuid.h>
-#endif
 
 /*
  * struct cxl_mbox_get_sup_feats_in - Get Supported Features input