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

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Message-ID: <14bfcfa0-5999-49e4-854e-ff8810d6df3c@intel.com>
Date: Fri, 28 Mar 2025 13:03:19 -0700
From: Dave Jiang <dave.jiang@...el.com>
To: paulmck@...nel.org, linux-cxl@...r.kernel.org
Cc: dave@...olabs.net, jonathan.cameron@...wei.com,
 alison.schofield@...el.com, vishal.l.verma@...el.com, ira.weiny@...el.com,
 dan.j.williams@...el.com, gourry@...rry.net, linux-kernel@...r.kernel.org,
 linux-next@...r.kernel.org, sfr@...b.auug.org.au
Subject: Re: [BUG -next] ./usr/include/cxl/features.h:11:10: fatal error:
 uuid/uuid.h: No such file or directory



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/70ba4e80-53c4-4583-82f3-2851e0829aa6@linux.ibm.com/
> 
> 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