[source](https://gist.github.com/jakelevi1996/ce46a808fe3b5ef06ece63aea0bd2fed)

* build

```
/usr/bin/gcc main.c listprimes.c linkedlist.c -o list-primes -lm
```

* build in two steps (object files, executable file)

```
gcc -c main.c -I ./includes
gcc -c listprimes.c -I ./includes
gcc -c linkedlist.c -I ./includes
gcc main.o listprimes.o linkedlist.o -o list-primes -lm
```

* run

```
./list-primes
```