[lldb-dev] Linux: "doesn't contain the architecture x86_64"

Tue Jul 22 12:52:37 PDT 2014

The differences that I can see are that I built lldb with clang 3.4 and
Makefiles rather than gcc and cmake also a Debug+Asserts build rather than
just a debug build.

On Tue, Jul 22, 2014 at 12:20 PM, Todd Fiala <tfiala at google.com> wrote:

> Hey Keno,
>
> I just posted more info on the bug here:
> http://llvm.org/bugs/show_bug.cgi?id=20400
>
> The details of the setup are there.  The short version: I set up an Ubuntu
> 12.04 x86_64 system, built lldb with gcc-4.9.1, could not repro.  You can
> see my install instructions there to see if you differ significantly
> somewhere.
>
> It would be great if you can repro that setup and see if you still hit the
> issue.
>
> Thanks!
>
> -Todd
>
>
> On Tue, Jul 22, 2014 at 8:37 AM, Todd Fiala <tfiala at google.com> wrote:
>
>> (And thanks for tracking that down.)
>>
>>
>> On Tue, Jul 22, 2014 at 8:36 AM, Todd Fiala <tfiala at google.com> wrote:
>>
>>> Haha ok.  That's me :-)
>>>
>>> Looks like something about Ubuntu 12.04 is different on Ubuntu 14.04.
>>>
>>> I'll install a 12.04 and see what's broken and fix it.
>>>
>>> BTW - the /bin/ls seems to detect fine on Ubuntu 14.04 and MacOSX.
>>>  Interesting...
>>>
>>> I'll look at this today.
>>>
>>> -Todd
>>>
>>>
>>> On Mon, Jul 21, 2014 at 8:18 PM, Keno Fischer <
>>> kfischer at college.harvard.edu> wrote:
>>>
>>>> According to bisect, the culprit is:
>>>>
>>>> Author: Todd Fiala <todd.fiala at gmail.com>
>>>> Date:   Fri Jun 27 16:52:49 2014 +0000
>>>>
>>>>     Fix ObjectFileELF to determine architectures independent of host.
>>>>
>>>>     Previously ObjectFileELF was simplifying and assuming the object
>>>> file it was
>>>>     looking at was the same as the host architecture/triple.  This
>>>> would break
>>>>     attempts to run, say, lldb on MacOSX against lldb-gdbserver on
>>>> Linux since
>>>>     the MacOSX lldb would say that the linux elf file was really an
>>>> Apple MacOSX
>>>>     architecture.  Chaos would ensue.
>>>>
>>>>     This change allows the elf file to parse ELF notes for Linux,
>>>> FreeBSD and
>>>>     NetBSD, and determine the OS appropriately from them.  It also
>>>> initializes
>>>>     the OS type from the ELF header OSABI if it is set (which it is for
>>>> FreeBSD
>>>>     but not for Linux).
>>>>
>>>>     Added a test with freebsd and linux images that verify that
>>>>     '(lldb) image list -t -A' prints out the expected architecture for
>>>> each.
>>>>
>>>>
>>>>     git-svn-id: https://llvm.org/svn/llvm-project/lldb/trunk@211907
>>>> 91177308-0d34-0410-b5e6-96231b3b80d8
>>>>
>>>>
>>>> On Mon, Jul 21, 2014 at 5:24 PM, Todd Fiala <tfiala at google.com> wrote:
>>>>
>>>>> Hi again,
>>>>>
>>>>> Keno - what revision of lldb are you synched to?  I recall seeing some
>>>>> platform changes go in today, I think after my last sync/build.
>>>>>
>>>>> Thanks,
>>>>> Todd
>>>>>
>>>>>
>>>>> On Mon, Jul 21, 2014 at 5:10 PM, Todd Fiala <tfiala at google.com> wrote:
>>>>>
>>>>>> FWIW - I just tried this on Ubuntu 14.04 with a build at r213575
>>>>>> (earlier today):
>>>>>>
>>>>>> tfiala at tfiala2:/mnt/ssd/work/macosx.sync/mbp-git/build-debug$ bin/lldb
>>>>>> (lldb) file /bin/ls
>>>>>> Current executable set to '/bin/ls' (x86_64).
>>>>>> (lldb) run
>>>>>> Process 20313 launching
>>>>>> Process 20313 launched: '/bin/ls' (x86_64)
>>>>>> Process 20313 stopped
>>>>>> * thread #1: tid = 20313, 0x00007fdaa88d42d0, name = 'ls', stop reason = trace
>>>>>>     frame #0: 0x00007fdaa88d42d0
>>>>>> error: No such process
>>>>>> 2014-06-29-23_22_22  CMakeFiles               examples          rules.ninja
>>>>>> 2014-06-29-23_22_40  cmake_install.cmake      include           share
>>>>>> bin                  CPackConfig.cmake        lib               test
>>>>>> build.ninja          CPackSourceConfig.cmake  lldb-test-traces  tools
>>>>>> cmake                docs                     LLVMBuild.cmake   unittests
>>>>>> CMakeCache.txt       DummyConfigureOutput     projects          utils
>>>>>> Process 20313 exited with status = 0 (0x00000000)
>>>>>> (lldb)
>>>>>>
>>>>>> That seemed to work, but is Ubuntu 14.04 vs. 12.04.
>>>>>>
>>>>>> -Todd
>>>>>> 
>>>>>>
>>>>>>
>>>>>> On Mon, Jul 21, 2014 at 5:08 PM, Todd Fiala <tfiala at google.com>
>>>>>> wrote:
>>>>>>
>>>>>>> Can you send me your /bin/ls?  (Direct send to me, might need to
>>>>>>> .tar.gz it).  I can see if we're identifying it correctly at the object
>>>>>>> file level.
>>>>>>>
>>>>>>> With recent platform additions, we may have borked something.
>>>>>>>
>>>>>>> Have you tried running the tests on your end?  There are a few tests
>>>>>>> in test/functionalities/object-file that will verify if we're parsing the
>>>>>>> object files correctly.
>>>>>>>
>>>>>>>
>>>>>>>
>>>>>>> On Mon, Jul 21, 2014 at 5:05 PM, Keno Fischer <
>>>>>>> kfischer at college.harvard.edu> wrote:
>>>>>>>
>>>>>>>> This is on
>>>>>>>>
>>>>>>>> 64-bit Ubuntu 12.04.4 LTS (GNU/Linux 3.2.0-61-generic x86_64)
>>>>>>>>
>>>>>>>> I started a bisect. I can confirm that this worked on Feb 28 (I
>>>>>>>> chose that arbitrarily for the start of the bisect), so it must have broken
>>>>>>>> since.
>>>>>>>>
>>>>>>>>
>>>>>>>> On Mon, Jul 21, 2014 at 5:01 PM, Todd Fiala <tfiala at google.com>
>>>>>>>> wrote:
>>>>>>>>
>>>>>>>>> Hi Keno,
>>>>>>>>>
>>>>>>>>> Which Linux distribution and bitness (64/32) are you on?
>>>>>>>>>
>>>>>>>>> I've seen similar behavior when platforms or object files
>>>>>>>>> inappropriately identify (or mis-identify) which files they can do
>>>>>>>>> something with.
>>>>>>>>>
>>>>>>>>>
>>>>>>>>> On Mon, Jul 21, 2014 at 3:26 PM, Keno Fischer <
>>>>>>>>> kfischer at college.harvard.edu> wrote:
>>>>>>>>>
>>>>>>>>>> I just rebuilt lldb on a linux machine (usually I'm on mac), and
>>>>>>>>>> I'm
>>>>>>>>>> seeing this (for all programs on the machine). Has anybody seen
>>>>>>>>>> this
>>>>>>>>>> before (before I dive into debugging)?
>>>>>>>>>>
>>>>>>>>>> >usr/bin/lldb /bin/ls
>>>>>>>>>> error: '/bin/ls' doesn't contain the architecture x86_64
>>>>>>>>>>
>>>>>>>>>> Keno
>>>>>>>>>> _______________________________________________
>>>>>>>>>> lldb-dev mailing list
>>>>>>>>>> lldb-dev at cs.uiuc.edu
>>>>>>>>>> http://lists.cs.uiuc.edu/mailman/listinfo/lldb-dev
>>>>>>>>>>
>>>>>>>>>
>>>>>>>>>
>>>>>>>>>
>>>>>>>>> --
>>>>>>>>>  Todd Fiala | Software Engineer |  tfiala at google.com |
>>>>>>>>> 650-943-3180
>>>>>>>>>
>>>>>>>>
>>>>>>>>
>>>>>>>
>>>>>>>
>>>>>>> --
>>>>>>> Todd Fiala | Software Engineer |  tfiala at google.com |  650-943-3180
>>>>>>>
>>>>>>
>>>>>>
>>>>>>
>>>>>> --
>>>>>> Todd Fiala | Software Engineer |  tfiala at google.com |  650-943-3180
>>>>>>
>>>>>
>>>>>
>>>>>
>>>>> --
>>>>> Todd Fiala | Software Engineer |  tfiala at google.com |  650-943-3180
>>>>>
>>>>
>>>>
>>>
>>>
>>> --
>>> Todd Fiala | Software Engineer |  tfiala at google.com |  650-943-3180
>>>
>>
>>
>>
>> --
>> Todd Fiala | Software Engineer |  tfiala at google.com |  650-943-3180
>>
>
>
>
> --
> Todd Fiala | Software Engineer |  tfiala at google.com |  650-943-3180
>
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