+# Network backend sets. This also brings in the relevant attachment
+# to proxy.c depending on whether we're crypto-avoidant or not.
+BE_ALL = be_all cproxy
+BE_NOSSH = be_nossh nocproxy
+BE_SSH = be_none cproxy
+BE_NONE = be_none nocproxy
+# More backend sets, with the additional Windows serial-port module.
+W_BE_ALL = be_all_s winser cproxy
+W_BE_NOSSH = be_nos_s winser nocproxy
+# And with the Unix serial-port module.
+U_BE_ALL = be_all_s uxser cproxy
+U_BE_NOSSH = be_nos_s uxser nocproxy
+