+ - make sure fat build environment is up to date
+ sudo apt update && sudo apt upgrade
+
+ - ensure i386 build support is available, and we have tools to build
+ installers for Windows and Mac OS X
+
+ sudo dpkg --add-architecture i386
+ sudo apt update
+ sudo apt install gcc-multilib genisoimage nsis
+ (need some mingw packages too, but not sure which offhand)
+