[vikky@server sandbox]$ 
[vikky@server sandbox]$ ls
dep1.c  dep2.c  prog.c
[vikky@server sandbox]$ cat dep1.c
#include <stdio.h>

void printer(){
        printf("%s\n","Hello");
}
[vikky@server sandbox]$ gcc -c -o dep1.so dep1.c 
[vikky@server sandbox]$ ls
dep1.c  dep1.so  dep2.c  prog.c
[vikky@server sandbox]$ cat dep2.c 
void master(){
        printer();
}
[vikky@server sandbox]$ gcc -c -o dep2.so dep2.c 
[vikky@server sandbox]$ ls
dep1.c  dep1.so  dep2.c  dep2.so  prog.c
[vikky@server sandbox]$ cat prog.c 
int main(void){
        master();
        return 0;
}
[vikky@server sandbox]$ gcc -o prog prog.c dep1.so dep2.so 
[vikky@server sandbox]$ ls
dep1.c  dep1.so  dep2.c  dep2.so  prog  prog.c
[vikky@server sandbox]$ ./prog 
Hello

[vikky@server sandbox]$