These examples assume that the rosco_m68k repo and the Xosera repo are next to this repo, but this can be overridden with the following variables:
ROSCO_M68K_DIR - Location for Rosco dir (this is the same as the examples in Rosco's dir)
XOSERA_M68K_DIR - Location of the Xosera dir
With that complete you should be able to just run make in the example directories and build the code (included dependacies like images).
You will need to build the libs in rosco_m68k and the xosera_m68k_api in Xosera.
Build insstruction for rosco_m68k can be found here
Building the Xosera API can be done by running make m68k at the top level of the Xosera repo.
You can build this code by running make at the top level.
Once you've built the code you will need to copy this to a sd card to run on the target system. There are a number of image assets needed for the programs so best to use the make target deploy to help copy everything needed to the SD card. You will need to set the DEPLOY_PATH to achieve this
DEPLOY_PATH - Location of your SD card on the local filesystem.
With DEPLOY_PATH set, run make deploy from the top level dir and all executables and needed files will be copied over to the SD driver.
You will need the SD card menu on the SD card from rosco_m68k/code/software/sdfat_menu. See documentation here