This changes the configure option into two states: auto: build all that can be build (default) A list of backend names: build them and fail if we can't "papi" is missing because it's not in Debian and I can't test it.
This changes the configure option into two states: auto: build all that can be build (default) A list of backend names: build them and fail if we can't "papi" is missing because it's not in Debian and I can't test it.