See makefile. Makefiles are not standalone anymore.
You have to write and execute them in one step with link{makefile}(..., run = TRUE).
Use the help_parallelRemake function to get more help.
write_makefile(targets = "all", remakefiles = "remake.yml", prepend = NULL, remake_args = list(verbose = TRUE), run = TRUE, command = "make", args = character(0))
makefile().makefile().makefile().makefile().makefile().makefile().makefile().Use the help_parallelRemake function to get more help.