Two problems and one revision

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.

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

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'

but "libm.a" and "libc.a" are present in /usr/lib!

Can someone help us? Thanks.

Regards

Piercarlo
Fabrizio