undefined reference to 'nanosleep'

[André Neves]

On Wed, September 12, 2007 14:55, Joel Sherrill wrote:
> André Neves wrote:
>> First of all sorry for forgetting the subject.
>> Bah, not helpful. >_<
>>
>> On Wed, September 12, 2007 13:48, Ralf Corsepius wrote:
>>
>>> On Wed, 2007-09-12 at 12:20 +0100, André Neves wrote:
>>>
>>>> Hi all.
>>>>
>>>> I cave in and admit that the system outsmarted me.
>>>> Here goes newbie question. :)
>>>> Compiling RTEMS for a LEON2 simulator in a Linux (Ubuntu 7.04)
>>>> machine.
>>>> autoconf 2.61, automake 1.10, gcc 4,1,2.
>>>>
>>>> I'm in the last step of the compilation described in the wiki's Quick
>>>> Start:
>>>>
>>>>> cd rtems
>>>>> export PATH=/opt/rtems-4.8/bin:$PATH
>>>>> ./bootstrap
>>>>> cd ..
>>>>> mkdir b-sis
>>>>> cd b-sis
>>>>> ../rtems/configure
>>>>>
>>>> --target=sparc-rtems
>>>>
>>>            ^^^^^^^^^^^
>>> This must match with the target you used to build your toolchain.
>>>
>>>
>>>>  --enable-rtemsbsp=sis
>>>> --enable-tests=samples --disable-posix --disable-itron
>>>>
>>>>> make
>>>>>
>>>> Doing 'make all'.
>>>>
>>>>> (...)
>>>>> Making all in capture
>>>>> make[5]: Entering directory
>>>>>
>>>> `/home/ac-neves/workdir/sparc-rtems/c/leon2/testsuites/samples/capture'
>>>>
>>>>> sparc-rtems-gcc -B../../../../../leon2/lib/ -specs bsp_specs -qrtems
>>>>>
>>> ^^^^^^ ^^^^^^^^^^^^
>>>
>>> OK, so you, for reason being incomprehensible to me used
>>> --target=sparc-rtems
>>>
>>
>> The wiki Quick Start page said to use
>> --target=sparc-rtems4.8
>>
>> It was making some part of my compilation fail, and my internship tutor
>> had a look at it and said that probably dropping the "4.8" would make it
>> work. So i used
>> --target=sparc-rtems
>> instead, to see if that would solve the problem.
>> It did, and so i went and edited the wiki accordingly.
>> If i did wrong, please edit it back into the correct option·
>>
>> (Low) personal experience says the right option is the one I used,
>> expert
>> says what I used makes no sense.
>> Hmm... I don't know what should be there. I know no other option. :)
>>
>>
> Where did your tools come from?  If you built then and used sparc-rtems,
> then you have to match that or the RTEMS configure scripts won't default
> to the right tool names.
>
> If you downloaded binaries using that name from somewhere, then you
> are at risk of not having the right C library version for the RTEMS you
> are using.

That explains a bit of it.
Thus the lock with
--target=sparc-rtems
, which makes my last edit on the Quick Start improper - i went and
reverted it.


I got the Cross-Compiler from: ftp://gaisler.com/gaisler.com/rcc/bin/linux
The 4.7.99.2 version.

Perhaps it's better that i work on a "more stable" version?
Would the problems diminish? Or is the 4.7.99.2 a "stable version"?

>>>> -mcpu=cypress -msoft-float -O2 -g      -o capture.exe init.o test1.o
>>>>
>>>>> ../../../../../leon2/lib/librtemscpu.a(libposix_a-usleep.o): In
>>>>>
>>>> function
>>>> `usleep':
>>>>
>>>>> /home/ac-neves/workdir/sparc-rtems/c/leon2/cpukit/posix/../../../../../../rtems-leon2/c/src/../../cpukit/posix/src/usleep.c:29:
>>>>>
>>>> undefined reference to `nanosleep'
>>>>
>
> nanosleep was enabled all the time now in CVS.  What RTEMS version
> are you using?  It would be wise to switch to CVS if you are interested
> in the bleeding edge.
>
> 2007-08-28      Joel Sherrill <joel.sherrill at OARcorp.com>
>
>         * posix/Makefile.am: Always build nanosleep.

The 4.7.99.2 version.
Maybe i should "downgrade" to a "stable" version instead.
Perhaps that would be better, instead of facing these little problems that
i don't yet know how to deal with.


Thanks for all the feedback. :)

>
>
>>>>> collect2: ld returned 1 exit status
>>>>> make[5]: *** [capture.exe] Error 1
>>>>> make[5]: Leaving directory
>>>>>
>>>> `/home/ac-neves/workdir/sparc-rtems/c/leon2/testsuites/samples/capture'
>>>>
>>>>> (...)
>>>>>
>>>> I've been trying to fix it myself, but failed to understand how
>>>> everything
>>>> is well except for nanosleep.
>>>> Can something not have been included properly?
>>>>
>>> Have you build newlib?
>>>
>>> Ralf
>>>
>>>
>>>
>>>
>>
>> Hmm... libnewlib-dev was missing.
>> (Like libc-dev was missing, and manpages-dev was missing. o_O I'm
>> starting
>> to dislike this Kubuntu.)
>>
>> I installed it, but there was no change, i get the same error on 'make
>> all'.
>>
>>
>> So:
>> - i didn't have [lib]newlib[-dev], but that didn't change anything;
>> - weird '--target=sparc-rtems';
>> - still "undefined reference to 'nanosleep'" when 'make all'.
>>
>> I hope I'm not being too cryptic or... undefined.
>>  Andre´ Neves
>>
>>
>> ps: I found some minor errors in the online documentation. How should i
>> report/fix that sort of things?
>>
>>
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>>
>
>