linux-kernel - Re: linux-next: build failure after merge of the fsinfo tree

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Message-ID: <CAK7LNAQ-=A0nDZK0FTzgJ6oJ-VbV33F1rVjvBAWgybSsUXaPVA@mail.gmail.com>
Date:   Tue, 12 May 2020 23:00:13 +0900
From:   Masahiro Yamada <masahiroy@...nel.org>
To:     Stephen Rothwell <sfr@...b.auug.org.au>
Cc:     David Howells <dhowells@...hat.com>,
        Linux Next Mailing List <linux-next@...r.kernel.org>,
        Linux Kernel Mailing List <linux-kernel@...r.kernel.org>
Subject: Re: linux-next: build failure after merge of the fsinfo tree

On Tue, May 12, 2020 at 6:57 PM Stephen Rothwell <sfr@...b.auug.org.au> wrote:
>
> Hi all,
>
> After merging the fsinfo tree, today's linux-next build (x86_64
> allmodconfig) failed like this:
>
> /usr/lib/gcc-cross/x86_64-linux-gnu/9/../../../../x86_64-linux-gnu/bin/ld: cannot find /usr/lib/x86_64-linux-gnu/libm-2.30.a
> /usr/lib/gcc-cross/x86_64-linux-gnu/9/../../../../x86_64-linux-gnu/bin/ld: cannot find /usr/lib/x86_64-linux-gnu/libmvec.a
>
> I don't know if this is a quirk of the build system or Debian's cross
> compiler setup.  Both those files exist in /usr/x86_64-linux-gnu/lib/.
>
> Masahiro, any thoughts?
>
> I have disabled the building of test_fsinfo for now:
>
> From: Stephen Rothwell <sfr@...b.auug.org.au>
> Date: Tue, 12 May 2020 19:49:33 +1000
> Subject: [PATCH] disable building fo test-fsinfo for now
>
> Signed-off-by: Stephen Rothwell <sfr@...b.auug.org.au>
> ---
>  samples/vfs/Makefile | 2 +-
>  1 file changed, 1 insertion(+), 1 deletion(-)
>
> diff --git a/samples/vfs/Makefile b/samples/vfs/Makefile
> index f5bc5dfdf045..97e54c8be358 100644
> --- a/samples/vfs/Makefile
> +++ b/samples/vfs/Makefile
> @@ -1,5 +1,5 @@
>  # SPDX-License-Identifier: GPL-2.0-only
> -userprogs := test-fsinfo test-fsmount test-mntinfo test-statx
> +userprogs := test-fsmount test-mntinfo test-statx
>  always-y := $(userprogs)
>
>  userccflags += -I usr/include
> --
> 2.26.2
>
> --
> Cheers,
> Stephen Rothwell


I also failed to build it, but the error message
was different.



The following worked for me at least.
(Ubuntu 20.04).



diff --git a/samples/vfs/Makefile b/samples/vfs/Makefile
index 97e54c8be358..539fb3a56af3 100644
--- a/samples/vfs/Makefile
+++ b/samples/vfs/Makefile
@@ -1,7 +1,8 @@
 # SPDX-License-Identifier: GPL-2.0-only
-userprogs := test-fsmount test-mntinfo test-statx
+userprogs := test-fsinfo test-fsmount test-mntinfo test-statx
 always-y := $(userprogs)

 userccflags += -I usr/include

-test-fsinfo-userldflags += -static -lm
+test-fsinfo-userldflags := -static
+test-fsinfo-userldlibs := -lm




David,

BTW, why is '-static' needed here?




--
Best Regards
Masahiro Yamada