ping**2 [was: Re: [PATCH 2/2] busybox: configure according to {MACHINE, DISTRO}_FEATURES]

[Bernhard Reutner-Fischer <rep.dot.nop@gmail.com>]

On Tue, Jun 22, 2010 at 10:39:53PM +0200, Bernhard Reutner-Fischer wrote:
>On Fri, Jun 11, 2010 at 01:59:12PM +0100, Phil Blundell wrote:
>>On Thu, 2010-06-10 at 23:20 +0200, Bernhard Reutner-Fischer wrote:
>>> If the machine does not provide a choice to use or not use the MMU then
>>> it makes no sense to take that into account for the package arch (think
>>> bfin or i586 or certain coldfires/m68k), yes. If, OTOH, a machine
>>> supports it (let's say ppc) then there must at least be a nice way to
>>> distinguish ppc<endian><mmu><floatingpoint> i would have hoped.
>>
>>Endianness and FPU are clearly both part of the general ABI: virtually
>>every package which contains compiled code is going to have a dependency
>>on those two settings.  So, for DISTROs which support multiple values
>>for either of those options, I would expect them to simply be encoded
>>into the default PACKAGE_ARCH (either directly or via TARGET_ARCH); this
>>is indeed what's already done with bi-endian ARM for example.  For
>>DISTROs which only support one or the other, there's no need to draw the
>>distinction.
>
>ok, i see.
>>
>>MMU is perhaps a little more complicated since, at least in theory, one
>>could imagine a DISTRO which supported both MMU-equipped and non-MMU
>>hardware and where the majority of binaries were capable of running on
>>both targets.  So in that case there might be a legitimate argument for
>>making it be a per-package setting in order to get parallel builds of
>>those packages that do actually care.  But I think the time to worry
>>about that would be when the situation does actually arise in practice.
>
>fair enough
>
>I hereby mass-ping the patches in this thread:
>[PATCH 1/3] uClibc: redo configuration
>{2/3 was already applied by khem, thanks!}
>[PATCH 3/3] busybox: picking IPv6 per default is not up to the package
>[PATCH 1/2] uclibc: handle DISTRO_FEATURE="largefile"
>[PATCH 2/2] busybox: configure according to {MACHINE,DISTRO}_FEATURES

ping**2