issues when compiling src

[perondeidad]

Is it normal for this error to happen?

sudo ./build_game.sh valve

cd client && make
make[1]: se entra en el directorio '/home/bondi/juegos/nucleico/valve/src/client'
fteqcc progs.src
Source file: progs.src
progs.src:1: warning: Unknown target 'fte_5768'. Ignored.
Outputfile: ../../csprogs.dat

************ ERROR ************
Couldn't open file src/shared/fteextensions.qc
Error in progs.src on line 10
make[1]: *** [Makefile:4: all] Error 1
make[1]: se sale del directorio '/home/bondi/juegos/nucleico/valve/src/client'
make: *** [Makefile:4: all] Error 2