linux-kernel - Re: [PATCH 0000/2297] [ANNOUNCE, RFC] "Fast Kernel Headers" Tree -v1: Eliminate the Linux kernel's "Dependency Hell"

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Date:   Sat, 8 Jan 2022 12:18:59 +0100
From:   Ingo Molnar <mingo@...nel.org>
To:     Nathan Chancellor <nathan@...nel.org>
Cc:     Linus Torvalds <torvalds@...ux-foundation.org>,
        linux-kernel@...r.kernel.org, linux-arch@...r.kernel.org,
        Andrew Morton <akpm@...ux-foundation.org>,
        Peter Zijlstra <peterz@...radead.org>,
        Thomas Gleixner <tglx@...utronix.de>,
        Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
        "David S. Miller" <davem@...emloft.net>,
        Ard Biesheuvel <ardb@...nel.org>,
        Josh Poimboeuf <jpoimboe@...hat.com>,
        Jonathan Corbet <corbet@....net>,
        Al Viro <viro@...iv.linux.org.uk>, llvm@...ts.linux.dev
Subject: Re: [PATCH 0000/2297] [ANNOUNCE, RFC] "Fast Kernel Headers" Tree
 -v1: Eliminate the Linux kernel's "Dependency Hell"


* Nathan Chancellor <nathan@...nel.org> wrote:

> 3. Build failure with CONFIG_SAMPLE_CONNECTOR=m and O=...
> 
> I am guessing this has a similar root cause as above, since that commit
> mentions an error similar to this.
> 
> $ make -skj"$(nproc)" ARCH=x86_64 O=.build/x86_64 allmodconfig samples/connector/
> In file included from /home/nathan/cbl/src/linux-fast-headers/samples/connector/ucon.c:14:
> usr/include/linux/netlink.h:5:10: fatal error: uapi/linux/types.h: No such file or directory
>     5 | #include <uapi/linux/types.h>
>       |          ^~~~~~~~~~~~~~~~~~~~
> compilation terminated.

Correct - this test now passes with the UAPI symlink fix applied:

  kepler:~/mingo.tip.git> make -skj"$(nproc)" ARCH=x86_64 O=.build/x86_64 allmodconfig samples/connector/
  kepler:~/mingo.tip.git> 

Thanks,

	Ingo