gcc -o testProg DHTMessageHandlers.o DHTLibTest.c
/tmp/ccozLQdn.o: In function `main':
DHTLibTest.c:(.text+0x45): multiple definition of `main'
DHTMessageHandlers.o:DHTMessageHandlers.c:(.text+0x0): first defined here
/usr/bin/ld: Warning: size of symbol `main' changed from 62 in DHTMessageHandlers.o to 25 in /tmp/ccozLQdn.o
collect2: ld returned 1 exit status