[gentoo-dev] New Global USE: crossdev

Like to get people's opinions on a new global USE flag for crossdev.
This would be needed because there are some patches that need to be
applied to gcc/glibc that are needed only for a cross-compiler to be
built, and I don't want said patch interfereing with normal, day-to-day
useage.

Some examples include the patch found here:
http://gcc.gnu.org/ml/gcc-patches/2003-10/msg01647.html

That patch needs to be replicated for several archs to build a bootstrap
gcc-3.4 compiler properly (tested to be needed on ppc, sh4). Probably
not the best workaround, and as one of the followups to that URL above
indicates, there is a more desirable alternative.

Also, some patches need to be applied to glibc for some archs to build,
notably sh4 (for anyone looking at the possibility of Gentoo/Dreamcast).

Said USE Flag would mostly be applicable to gcc, glibc, and binutils.
Possibly kernel-headers too, if needed.

Any objections?


--Kumba

--
"Such is oft the course of deeds that move the wheels of the world:
small hands do them because they must, while the eyes of the great are
elsewhere." --Elrond

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I'm all for the crossdev USE flag... I think there's a lot we can do
with it for moving away from crossdev towards a crosscompilation
toolchain straight out of portage...

First of all, I think we should have a binutils-config package similar
to gcc-config so we can switch between different toolchains... then we
can put the gcc-config and binutils-config options into
/etc/{init,conf}.d/distcc

Additionally, it would be nice if the gcc (and in the future, binutils)
profiles had the complete gentoo version string for the profile name:
x86_64-pc-linux-gnu-3.4.0-r6 instead of x86_64-pc-linux-gnu-3.4.0.

Can SLOT be dynamically set yet based on use flags? IIRC, something
like the following isn't allowed because we're not supposed to have code
in the global section of an ebuild:

if use crossdev; then
SLOT="${PV}-${CTARGET}"
else
SLOT="${PV}"
fi

solar caught me commenting about crossdev stuff in #-dev earlier today,
and it looks like I volunteered to help at putting all this together...

Does anyone have any suggestions about this?

Lisa Seelye wrote:

> On Fri, 2004-07-09 at 21:36, Kumba wrote:
>
>>Said USE Flag would mostly be applicable to gcc, glibc, and binutils.
>>Possibly kernel-headers too, if needed.
>>
>>Any objections?
>
>
> Sounds like a good idea. I can see this being used in conjunction with
> distcc for crosscompiling somewhere down the line.
>


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