linux-kernel - Re: Build regressions/improvements in v3.10-rc1 (um)

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Date:	Mon, 13 May 2013 22:15:52 +1000
From:	Michael Ellerman <michael@...erman.id.au>
To:	richard -rw- weinberger <richard.weinberger@...il.com>
Cc:	Geert Uytterhoeven <geert@...ux-m68k.org>,
	Stephen Rothwell <sfr@...b.auug.org.au>,
	Linux Kernel Development <linux-kernel@...r.kernel.org>,
	User-mode Linux Kernel Development 
	<user-mode-linux-devel@...ts.sourceforge.net>
Subject: Re: Build regressions/improvements in v3.10-rc1 (um)

On Mon, 2013-05-13 at 12:07 +0200, richard -rw- weinberger wrote:
> On Mon, May 13, 2013 at 11:54 AM, Michael Ellerman
> <michael@...erman.id.au> wrote:
> >
> >
> > Geert Uytterhoeven <geert@...ux-m68k.org> wrote:
> >
> >>On Sun, May 12, 2013 at 11:17 PM, richard -rw- weinberger
> >><richard.weinberger@...il.com> wrote:
> >>> On Sun, May 12, 2013 at 10:47 PM, Geert Uytterhoeven
> >>> <geert@...ux-m68k.org> wrote:
> >>>> On Sun, 12 May 2013, Geert Uytterhoeven wrote:
> >>>>> However, the full list of errors isn't that unmanageable, so I'm
> >>following
> >>>>> up with a digested list...
> >>>>
> >>>> arch/um/drivers/cow_user.c:216: error: implicit declaration of
> >>function 'htobe32': 1 errors in 1 logs
> >>>> arch/um/drivers/cow_user.c:249: error: implicit declaration of
> >>function 'htobe64': 1 errors in 1 logs
> >>>> arch/um/drivers/cow_user.c:303: error: implicit declaration of
> >>function 'be32toh': 1 errors in 1 logs
> >>>> arch/um/drivers/cow_user.c:330: error: implicit declaration of
> >>function 'be64toh': 1 errors in 1 logs
> >>>> arch/um/os-Linux/skas/process.c:321: error: 'PTRACE_O_TRACESYSGOOD'
> >>undeclared (first use in this function): 1 errors in 1 logs
> >>>> arch/um/os-Linux/skas/process.c:321: error: (Each undeclared
> >>identifier is reported only once: 1 errors in 1 logs
> >>>> arch/um/os-Linux/skas/process.c:321: error: for each function it
> >>appears in.): 1 errors in 1 logs
> >>>> arch/um/os-Linux/skas/process.c:412: error: 'PTRACE_GETSIGINFO'
> >>undeclared (first use in this function): 1 errors in 1 logs
> >>>> arch/um/os-Linux/skas/process.c:560: error: 'PTRACE_O_TRACESYSGOOD'
> >>undeclared (first use in this function): 1 errors in 1 logs
> >>>> arch/um/os-Linux/start_up.c:245: error: 'PTRACE_SETOPTIONS'
> >>undeclared (first use in this function): 1 errors in 1 logs
> >>>> arch/um/os-Linux/start_up.c:245: error: (Each undeclared identifier
> >>is reported only once: 1 errors in 1 logs
> >>>> arch/um/os-Linux/start_up.c:245: error: for each function it appears
> >>in.): 1 errors in 1 logs
> >>>> arch/um/os-Linux/start_up.c:246: error: 'PTRACE_O_TRACESYSGOOD'
> >>undeclared (first use in this function): 1 errors in 1 logs
> >>>> arch/um/os-Linux/start_up.c:303: error: 'PTRACE_SETOPTIONS'
> >>undeclared (first use in this function): 1 errors in 1 logs
> >>>> arch/um/os-Linux/start_up.c:304: error: 'PTRACE_O_TRACESYSGOOD'
> >>undeclared (first use in this function): 1 errors in 1 logs
> >>>>         v3.10-rc1/um-i386/um-defconfig
> >>>>         Old host environment on kissb?
> >>>
> >>> This really looks like a host environment issue.
> >>> PTRACE_O_TRACESYSGOOD for example is defined in
> >>/usr/include/linux/ptrace.h
> >>
> >>Yep, just like e.g. htobe32().
> >>
> >>Michael, Stephen: Any chance this can be fixed?
> >
> > Possibly. We're cross compiling these on powerpc so perhaps we need to update the cross compiler.
> 
> Looks like you are the first man on planet earth who tries do build
> UML/x86 on powerpc. :D

:)  It has given us some trouble over the years.

I'll talk to Stephen tomorrow about it and see if we can get it working
again.

cheers

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