Re: [Qemu-devel] [Bug 1184616] [NEW] undefined reference to`trace_qemu_anon_ram_alloc'

[Stefan Hajnoczi <stefanha@gmail.com>]

On Tue, May 28, 2013 at 3:18 PM, Nigel Horne <1184616@bugs.launchpad.net> wrote:
>>>> On Mon, May 27, 2013 at 4:02 PM, Nigel Horne <1184616@bugs.launchpad.net>
>>>> wrote:
>>>>> The latest git version (commit 6a4e17711442849bf2cc731ccddef5a2a2d92d29)
>>>>> fails to compile:
>>>>>
>>>>> ...
>>>>>    LINK  qemu-ga
>>>>> libqemuutil.a(oslib-posix.o): In function `qemu_anon_ram_alloc':
>>>>> oslib-posix.c:(.text+0x154): undefined reference to
>>>>> `trace_qemu_anon_ram_alloc'
>>>>> libqemuutil.a(oslib-posix.o): In function `qemu_anon_ram_free':
>>>>> oslib-posix.c:(.text+0x1e7): undefined reference to
>>>>> `trace_qemu_anon_ram_free'
>>>>> collect2: error: ld returned 1 exit status
>>>>> make: *** [qemu-ga] Error 1
>>>>>
>>>>> This is on Ubuntu 13.04, gcc 4.7.3, configure flags:
>>>>> './configure' '--enable-linux-aio' '--enable-kvm' '--enable-vhost-net'
>>>> Please try:
>>>> make distclean && ./configure --enable-linux-aio --enable-kvm
>>>> --enable-vhost-net && make
>>> I tried that before I raised the bug.  However I tried it again to be sure,
>>> and yes I still get the same error.
>> Please post the output of "git status".  I wonder if there are stale
>> files because the build works fine here.
>
> Here it is:
>
> # On branch master
> # Untracked files:
> #   (use "git add <file>..." to include in what will be committed)
> #
> #       libhw32/
> #       libhw64/
> #       trace.c
> #       trace.h

rm trace.[ch]

Then try again.

The problem is that the auto-generated tracing files moved into
trace/generated-* but the Makefile and C compiler include paths still
pick up the old trace.[ch].

You probably built an older version of QEMU first in the same
directory.  The latest make distclean doesn't know about the old
trace.[ch] files.

Stefan