You do not appear to have the sources for the 2.6.15-1.2054_

I just installed Fedora core 5 and download CVS ZAPTEL. When I tried to compile zaptel by issue make command, and got error as below:

cc -I. -O4 -g -Wall -DBUILDING_TONEZONE -DSTANDALONE_ZAPATA -DZAPTEL_CONFIG="/etc/zaptel.conf" -c -o fxotune.o fxotune.c
cc -o fxotune fxotune.o -lm
/lib/modules/2.6.15-1.2054_FC5/build
You do not appear to have the sources for the 2.6.15-1.2054_FC5 kernel installed.
make: *** [linux26] Error 1.

Please help. Does current Zaptel CVS version work with Fedora core or not?

Thanks in advance.

well, do you have the sources for your kernel installed ?