linux-kernel - Re: Heads up Linux 2.6.38-rc4 compile problems.

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Message-ID: <AANLkTimGH5mU+OLRKb=H3WgLXPZaSc5heR+4w5gj2aD4@mail.gmail.com>
Date:	Wed, 9 Feb 2011 15:59:20 +0100
From:	Alex Riesen <raa.lkml@...il.com>
To:	"Eric W. Biederman" <ebiederm@...ssion.com>
Cc:	Linus Torvalds <torvalds@...ux-foundation.org>,
	David Miller <davem@...emloft.net>,
	Linux Kernel Mailing List <linux-kernel@...r.kernel.org>
Subject: Re: Heads up Linux 2.6.38-rc4 compile problems.

On Wed, Feb 9, 2011 at 10:01, Eric W. Biederman <ebiederm@...ssion.com> wrote:
> The failures look like:
>
> $ make -C gcc-stage1-x86_64 all-gcc all-target-libgcc install-gcc install-target-libgcc DESTDIR=/bld/Across/Across-2.0.0/sysroot-x86_64
> gcc -qlanglvl=ansi -c -DHAVE_CONFIG_H -g -O2 -I. -I/bld/Across/Across-2.0.0/gcc-4.4.3/libiberty/../include  -W -Wall
> -Wwrite-strings -Wc++-compat -Wstrict-prototypes /bld/Across/Across-2.0.0/gcc-4.4.3/libiberty/fibheap.c -o fibheap.o
> gcc: unrecognized option '-qlanglvl=ansi'
> /bld/Across/Across-2.0.0/gcc-4.4.3/libiberty/fibheap.c: In function ‘fibheap_union’:
> /bld/Across/Across-2.0.0/gcc-4.4.3/libiberty/fibheap.c:151: warning: implicit declaration of function ‘free’

Maybe some files (stdlib.h or malloc.h) return no data when read?
Then, gcc still
"compiles" them, but all the declarations are missing. And I would expect gcc
to complain if zero blocks returned, and truncated files are very likely to
abort compilation.

Can the command be strace'd immediately after the failure?
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