Someone

gcc -g -O2 -o .libs/testcall testcall.o  /usr/src/bristuff-0.3.0-PRE-1y-h/libunicall-0.0.3/.libs/libunicall.so -ldl -lpthread /usr/lib/libtiff.so /usr/lib/libjpeg.so -lz -lm -lc -lspandsp -Wl,--rpath -Wl,/usr/local/lib
testcall.o: In function `handle_uc_event':
/usr/src/bristuff-0.3.0-PRE-1y-h/libunicall-0.0.3/testcall.c:515: undefined reference to `dtmf_tx_put'
/usr/src/bristuff-0.3.0-PRE-1y-h/libunicall-0.0.3/testcall.c:500: undefined reference to `dtmf_tx_put'
testcall.o: In function `channel_read_file':
/usr/src/bristuff-0.3.0-PRE-1y-h/libunicall-0.0.3/testcall.c:141: undefined reference to `dtmf_rx_get'
/usr/src/bristuff-0.3.0-PRE-1y-h/libunicall-0.0.3/testcall.c:192: undefined reference to `dtmf_tx_put'
collect2: ld returned 1 exit status
make[1]: *** [testcall] Error 1
make[1]: Leaving directory `/usr/src/bristuff-0.3.0-PRE-1y-h/libunicall-0.0.3'
make: *** [all] Error 2