On Friday 16 July 2010 20:46:17 Linus Torvalds wrote: > Maybe a full "solver" is unnecessary, for example, but just a simple > "automatically enable the direct dependencies and scream when it's not > simple any more" would take care of 99% of the common cases, and then > warn when it needs some manual help. I think the recursion should also be limited to cases where the dependency is a valid selectable option, i.e. not for # this architecture does not support MMIO config HAS_IOMEM def_bool 'n' config PCI bool "PCI Device drivers" depends on HAS_IOMEM config FOO tristate "Some device driver" depends on PCI In this case, it would be straightforward for the solver to enable PCI for when something selects CONFIG_FOO, but it should print a warning if this is attempted while HAS_IOMEM is unconditionally disabled, since that puts it into the "not simple" category. Arnd -- To unsubscribe from this list: send the line "unsubscribe linux-kbuild" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html