Re: Two problems and one revision

On Thursday 16 January 2003 16:21, [email protected] 
wrote:
> We have two Core installation problem.
> We are using the kernel 2.4.18, RTAI 24.1.10, gcc 2.95.3.
> RTAI is correctly installed (all RTAI tests passed) and all modules are
> loaded.
>
> Note: in the Orocos-Core online manual in the subsection "RTAI Settings,
> the items "Bits" and "Typed Mailboxes" are missing, otherwise not all RTAI
> modules can be loaded.

indeed, the old menu is still listed in the docs. I'll change it.

>
> Problem 1:
> in the output of './configure --with-rtai=/usr/src/rtai-24.1.10' we can
> see:
>
> checking rtai/rtai.h usability... no
> checking rtai/rtai.h presence... no --> but present!
> checking for rtai/rtai.h... no
> checking rtai/rtai_sched.h usability... no
> checking rtai/rtai_sched.h presence... no --> but present!
> checking for rtai/rtai_sched.h... no
> checking rtai/rtai_fifos.h usability... no
> checking rtai/rtai_fifos.h presence... no --> but present!
> checking for rtai/rtai_fifos.h... no
> checking rtai/rtai_pthread.h usability... no
> checking rtai/rtai_pthread.h presence... no --> actually not present in the
> RTAI directory
> checking for rtai/rtai_pthread.h... no
> checking rtai/rtai_pthread_int.h usability... no
> checking rtai/rtai_pthread_int.h presence... no --> actually not present in
> the RTAI directory
> checking for rtai/rtai_pthread_int.h... no

This will be fixed in the new release (fix already in CVS), do not worry about 
it, it does not influence your build whatsoever. 

>
> Problem 2:
> The 'make' command exits because of this error:
>
> Making all in tests
> make[2]: Entering directory `/root/orocos-core-0.9.0-0/build/tests'
> ld -r -o test-rt.o /root/orocos-core-0.9.0-0/build/src/crtbegin.o test.o
> module.o /root/orocos-core-0.9.0-0/build/src/crtend.o -lm -lc
> ld: cannot find -lm
> make[2]: *** [test-rt.o] Error 1
> make[2]: Leaving directory `/root/orocos-core-0.9.0-0/build/tests'

try to remove the -lm -lc flags since rtai has its own libm loaded in the 
kernel and libc is userspace. This can also be considered as a bug. But i do 
not understand why it does not find your libm.a ... 

try adding the line 
/usr/lib 
in
your /etc/ld.so.conf and see if it helps.  

Peter.

>
> but "libm.a" and "libc.a" are present in /usr/lib!
>
> Can someone help us? Thanks.
>
> Regards
>
> Piercarlo
> Fabrizio
>
>
> _______________________________________________
> Orocos mailing list
> [email protected]
> http://mail.mech.kuleuven.ac.be/mailman/listinfo/orocos