Messages in this thread | | | Date | Sun, 18 Feb 2007 20:25:35 +0100 | From | Sam Ravnborg <> | Subject | Re: kbuild question |
| |
> > > > Sure, on powerpc for some of the embedded sub-architectures you can only > > select a single board to build for. For a lot of people this is sufficient, > > however we are moving towards a world where you can easily build in support > > for multiple boards into a single kernel. > > > > I'd like to have it such that if I'm only building support for one board > > (CONFIG_ONLY_HAVE_ONE, not going to call it that, but for this discussion its > > sufficient), you get a choice menu from Kconfig enforcing the ability to only > > select one board. However if !CONFIG_ONLY_HAVE_ONE than you can select > > multiple boards to build into your kernel. > > > > if CONFIG_ONLY_HAVE_ONE is set we can optimize out the runtime checks that get > > added for handling the multiple board case. > > On m68k we have the same problem, but what I'm what I'm considering is to > add a new mode for choice groups - at least one must be selected and > kconfig generates the extra information if only one is selected.
How about extendign the current 'option' syntax to do this? So we could do something like:
choice prompt "choice prompt" default VAL_FIRST option multivalue if !CONFIG_ONLY_HAVE_ONE
config VAL_FIRST bool "first"
config VAL_SECOND bool "second"
endchoice
It seems to fit well with how option is used today, and extends current syntax nicely.
Sam - To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
| |