RSA OAEP Implementation compiling problem

Question

I downloaded RSA-OAEP example from https://github.com/Rupan/rsa. Next I compile in linux kali:

gcc -O0 -ggdb -Wall -W -DTEST tiger.o sboxes.o oaep.c -o oaep && ./oaep SomeRandomString  

Output of this was:

gcc: error: tiger.o: No such file or directory , gcc: error: sboxes.o: No such file or directory.

I compile this files using:

gcc -c sboxes.c and gcc -c tiger.c   

Next i compiled

gcc -O0 -ggdb -Wall -W -DTEST tiger.o sboxes.o oaep.c -o oaep && ./oaep SomeRandomString  

and it doesnt work output is wrong can you help me ?