undefined reference to 'nanosleep'

[Joel Sherrill]

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.
>>> -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.


>>>> 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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