Compiling it gives me that error:

make[3]: Entering directory `/home/fasoz/soa/tudos/l4/pkg/l4util/examples'
test -f perf/broken -o -f perf/obsolete ||              \
            if [ -f perf/Makefile ] ; then PWD=/home/fasoz/soa/tudos/l4/pkg/l4util/examples/perf make -C perf  ; fi
make[4]: Entering directory `/home/fasoz/soa/tudos/l4/pkg/l4util/examples/perf'
PWD=/home/fasoz/soa/tudos/l4/prova/pkg/l4util/examples/perf/OBJ-x86_586-l4v2 make  -C /home/fasoz/soa/tudos/l4/prova/pkg/l4util/examples/perf/OBJ-x86_586-l4v2 -f Makefile
make[5]: Entering directory `/home/fasoz/soa/tudos/l4/prova/pkg/l4util/examples/perf/OBJ-x86_586-l4v2'
  ==> Linking perf_p6
LD_PRELOAD=/home/fasoz/soa/tudos/l4/prova/tool/gendep/libgendep.so GENDEP_TARGET=perf_p6 GENDEP_BINARY=ld  ld -o perf_p6 /home/fasoz/soa/tudos/l4/prova/lib/x86_586/crt0.o p6.o -Ttext=0xa00000  -L/home/fasoz/soa/tudos/l4/prova/lib/x86_586/l4v2 -L/home/fasoz/soa/tudos/l4/prova/lib/x86_586 -L/home/fasoz/soa/tudos/l4/prova/lib -L/home/drops/lib/x86_586/l4v2 -L/home/drops/lib/x86_586 -L/home/drops/lib  -T/home/fasoz/soa/tudos/l4/prova/lib/x86_586/main_stat.ld  -static -lmain -ll4util -ll4sys -nostdlib  -luc_c -luc_be_minimal_io -luc_be_l4_start_stop -lc_be_sigma0_mem -luc_c -luclibc_support -ll4util -lsigma0 -luc_c /usr/lib/gcc/i486-linux-gnu/4.1.2/libgcc.a -luc_c -ll4sys -Ttext=0xa00000 --warn-common -gc-sections
/home/fasoz/soa/tudos/l4/prova/lib/x86_586/libuc_c.a(vfprintf.o): In function `vfprintf':
/home/fasoz/soa/tudos/l4/prova/pkg/uclibc/lib/uclibc/ARCH-all/libc/stdio/_vfprintf.c:1948: undefined reference to `__stack_chk_fail'
/home/fasoz/soa/tudos/l4/prova/lib/x86_586/libuc_c.a(wcrtomb.o): In function `wcrtomb':
/home/fasoz/soa/tudos/l4/prova/pkg/uclibc/lib/uclibc/ARCH-all/libc/misc/wchar/wchar.c:365: undefined reference to `__stack_chk_fail'
/home/fasoz/soa/tudos/l4/prova/lib/x86_586/libuc_c.a(wcsnrtombs.o): In function `wcsnrtombs':
/home/fasoz/soa/tudos/l4/prova/pkg/uclibc/lib/uclibc/ARCH-all/libc/misc/wchar/wchar.c:917: undefined reference to `__stack_chk_fail'
/home/fasoz/soa/tudos/l4/prova/lib/x86_586/libuc_c.a(_fpmaxtostr.o): In function `_fpmaxtostr':
/home/fasoz/soa/tudos/l4/prova/pkg/uclibc/lib/uclibc/ARCH-all/libc/stdio/_fpmaxtostr.c:769: undefined reference to `__stack_chk_fail'
/home/fasoz/soa/tudos/l4/prova/lib/x86_586/libuc_c.a(_ppfs_parsespec.o): In function `_ppfs_parsespec':
/home/fasoz/soa/tudos/l4/prova/pkg/uclibc/lib/uclibc/ARCH-all/libc/stdio/_vfprintf.c:1155: undefined reference to `__stack_chk_fail'
make[5]: *** [perf_p6] Error 1
make[5]: Leaving directory `/home/fasoz/soa/tudos/l4/prova/pkg/l4util/examples/perf/OBJ-x86_586-l4v2'
make[4]: *** [/home/fasoz/soa/tudos/l4/prova/pkg/l4util/examples/perf/OBJ-x86_586-l4v2] Error 2
make[4]: Leaving directory `/home/fasoz/soa/tudos/l4/pkg/l4util/examples/perf'
make[3]: *** [perf] Error 2
make[3]: Leaving directory `/home/fasoz/soa/tudos/l4/pkg/l4util/examples'
make[2]: *** [examples] Error 2
make[2]: Leaving directory `/home/fasoz/soa/tudos/l4/pkg/l4util'
make[1]: *** [l4util.bin] Error 2
make[1]: Leaving directory `/home/fasoz/soa/tudos/l4/pkg'
make: *** [pkg] Error 2

what about that error?