linux-kernel - Re: [PATCH 0/5] cleanups, fixes, and progress towards avoiding "make headers"

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Date: Mon, 10 Jun 2024 21:21:13 -0700
From: Jeff Xu <jeffxu@...omium.org>
To: John Hubbard <jhubbard@...dia.com>
Cc: Andrew Morton <akpm@...ux-foundation.org>, Shuah Khan <shuah@...nel.org>, 
	Andrei Vagin <avagin@...gle.com>, Axel Rasmussen <axelrasmussen@...gle.com>, 
	Christian Brauner <brauner@...nel.org>, David Hildenbrand <david@...hat.com>, Kees Cook <kees@...nel.org>, 
	Kent Overstreet <kent.overstreet@...ux.dev>, "Liam R . Howlett" <Liam.Howlett@...cle.com>, 
	Muhammad Usama Anjum <usama.anjum@...labora.com>, Peter Xu <peterx@...hat.com>, 
	Rich Felker <dalias@...c.org>, linux-mm@...ck.org, linux-kselftest@...r.kernel.org, 
	LKML <linux-kernel@...r.kernel.org>
Subject: Re: [PATCH 0/5] cleanups, fixes, and progress towards avoiding "make headers"

Hi


On Fri, Jun 7, 2024 at 7:10 PM John Hubbard <jhubbard@...dia.com> wrote:
>
> Eventually, once the build succeeds on a sufficiently old distro, the
> idea is to delete $(KHDR_INCLUDES) from the selftests/mm build, and then
> after that, from selftests/lib.mk and all of the other selftest builds.
>
> For now, this series merely achieves a clean build of selftests/mm on a
> not-so-old distro: Ubuntu 23.04:
>
> 1. Add __NR_mseal.
>
> 2. Add fs.h, taken as usual from a snapshot of ./usr/include/linux/fs.h
> after running "make headers". This is how we have agreed to do this sort
> of thing, see [1].
>
What is the "official" way to build selftests/mm ?
I tried a few ways, but it never worked, i.e. due to head missing.

1>
cd tools/testing/selftests/mm
make

migration.c:10:10: fatal error: numa.h: No such file or directory
   10 | #include <numa.h>
      |          ^~~~~~~~
compilation terminated.

2>
make headers
make -C tools/testing/selftests

make[1]: Entering directory
'/usr/local/google/home/jeffxu/mm/tools/testing/selftests/mm'
  CC       migration
migration.c:10:10: fatal error: numa.h: No such file or directory
   10 | #include <numa.h>

Thanks!
-Jeff