problem when it compiles....

gcc -O2 -march=i686 -pipe -o htsserver htsserver.o htsweb.o
 -L/usr/lib /usr/lib/libhttrack.so -lpthread -ldl -lz
htsweb.o(.text+0x2df0): In function `main':
/usr/ports/crux-it/network/httrack/work/src/httrack-3.33.15/src/htsweb.c:203:
undefined reference to `htsthread_wait'
htsweb.o(.text+0x2fbe): In function `webhttrack_main':
/usr/ports/crux-it/network/httrack/work/src/httrack-3.33.15/src/htsweb.c:271:
undefined reference to `hts_newthread'
htsweb.o(.text+0x3185): In function `webhttrack_runmain':
/usr/ports/crux-it/network/httrack/work/src/httrack-3.33.15/src/htsweb.c:301:
undefined reference to `htsthread_wait_n'
collect2: ld returned 1 exit status
make[2]: *** [htsserver] Error 1
make[2]: Leaving directory
`/usr/ports/crux-it/network/httrack/work/src/httrack-3.33.15/src'
make[1]: *** [all-recursive] Error 1
make[1]: Leaving directory
`/usr/ports/crux-it/network/httrack/work/src/httrack-3.33.15'
make: *** [all] Error 2