what should I solve the error? I guess it probably cpp file is suitable c file.
/usr/bin/ld: /tmp/ccFPfyeZ.o: in function `fuzz_one':
/home/k/Desktop/aflplusplus-hier/afl-fuzz.c:6443: undefined reference to `UR'
/usr/bin/ld: /home/k/Desktop/aflplusplus-hier/afl-fuzz.c:6286: undefined reference to `UR'
/usr/bin/ld: /home/k/Desktop/aflplusplus-hier/afl-fuzz.c:6288: undefined reference to `UR'
/usr/bin/ld: /home/k/Desktop/aflplusplus-hier/afl-fuzz.c:6262: undefined reference to `UR'
/usr/bin/ld: /home/k/Desktop/aflplusplus-hier/afl-fuzz.c:6264: undefined reference to `UR'
/usr/bin/ld: /tmp/ccFPfyeZ.o:/home/k/Desktop/aflplusplus-hier/afl-fuzz.c:6238: more undefined references to `UR' follow
collect2: error: ld returned 1 exit status
make: *** [Makefile:81: afl-fuzz] Error 1
what should I solve the error? I guess it probably cpp file is suitable c file.