[vikky@server sandbox]$ ls
dep1.cpp  dep2.cpp  prog.cpp
[vikky@server sandbox]$ cat dep1.cpp 
#include <stdio.h>
void printer(){
        printf("%s\n","Hello");
}
[vikky@server sandbox]$ g++ -c -o dep1.so dep1.cpp 
[vikky@server sandbox]$ ls
dep1.cpp  dep1.so  dep2.cpp  prog.cpp
[vikky@server sandbox]$ cat dep2.cpp 
void printer();

void master(){
        printer();
}
[vikky@server sandbox]$ g++ -c -o dep2.so dep2.cpp 
[vikky@server sandbox]$ ls
dep1.cpp  dep1.so  dep2.cpp  dep2.so  prog.cpp
[vikky@server sandbox]$ cat prog.cpp 
void master();

int main(void){
        master();
        return 0;
}
[vikky@server sandbox]$ g++ -o prog prog.cpp dep2.so dep1.so 
[vikky@server sandbox]$ ls
dep1.cpp  dep1.so  dep2.cpp  dep2.so  prog  prog.cpp
[vikky@server sandbox]$ ./prog 
Hello