% zsh --version
zsh 5.4.2 (x86_64-ubuntu-linux-gnu)
% uname -a
Linux *** 4.15.0-47-generic #50-Ubuntu SMP Wed Mar 13 10:44:52 UTC 2019 x86_64 x86_64 x86_64 GNU/Linux
% as --version
GNU assembler (GNU Binutils for Ubuntu) 2.30
***
% gcc --version
gcc (Ubuntu 7.3.0-27ubuntu1~18.04) 7.3.0
***
% qemu-system-i386 --version
QEMU emulator version 2.11.1(Debian 1:2.11+dfsg-1ubuntu7.12)
***
% ld --version
GNU ld (GNU Binutils for Ubuntu) 2.30
***
% make --version
GNU Make 4.1
***
% make
% make run
% make clean
% make debugq