Thanks for the help @mfalkvidd
I managed to get the make utility installed. Hopefully this will help anyone else running into this problem:
had to update and upgrade before it would work
apk update ... apk upgrade ... apk add build-base
I am still experiencing the Failed init system
[SECTION] Detecting target machine. [OK] machine detected: SoC=BCM2836, Type=unknown, CPU=armv7l. [SECTION] Detecting SPI driver. [OK] SPI driver detected:BCM. [SECTION] Detecting init system. [FAILED] unknown init system. [SECTION] Saving configuration. [SECTION] Cleaning previous builds. [OK] Finished.
Its like it doesn't know where my init files are. Digging around a little in the configure code, I see that the prefix is usr/local/
Should I change that to where my MySensors directory is? Or do I need to move the init scrips out of the initscripts directory?