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

[Paul E. McKenney]

On Fri, Mar 28, 2025 at 01:03:19PM -0700, Dave Jiang wrote:
> 
> 
> 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@xxxxxxxxxxxxx/
> > 
> > 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

Thank you, Dave!

Please note that I am reproducing this not on powerpc, but instead on
x86 with a simple allmodconfig build.

Making the above change got me this:

usr/include/cxl/features.h:59:9: error: unknown type name ‘uuid_t’

							Thanx, Paul