Hi, My laptop is Macbook Pro 14' M1. I suspect the error comes from the M1 chip. Does anyone can help me out! arallels@ubuntu-linux-20-04-desktop:~/Downloads/ICSim/ICSim-master$ make gcc -I/usr/include/SDL2 -c -o icsim.o icsim.c gcc lib.c /usr/bin/ld: /usr/lib/gcc/aarch64-linux-gnu/9/../../../aarch64-linux-gnu/Scrt1.o: in function `_start': (.text+0x18): undefined reference to `main' /usr/bin/ld: (.text+0x1c): undefined reference to `main' collect2: error: ld returned 1 exit status make: *** [Makefile:14: lib.o] Error 1 <img width="1347" alt="image" src="https://user-images.githubusercontent.com/89450044/160541388-e25363ec-52ca-4592-aa97-78e724394e52.png">