Hey!
Manolis Ragkousis <manolis...@gmail.com> skribis:
> On 12/07/16 11:36, Ludovic Courtès wrote:
[...]
>> Adding a new cross-compilation target is a commitment. So I hope you
>> and others will make sure it remains functional and useful!
>>
>> I also think that together with Manolis and everyone else who’s played
>> with cross-compilation, we must clean up the mess that this has become.
>> ;-) Namely, we must more clearly separate target-specific things and
>> also separate build-side from host-side code (in cross-base.scm).
>
> You are right, now and then cross-compilation breaks with no apparent
> reason as the code gets bigger and more complex (especially after adding
> non-Linux targets).
>
> I was thinking that maybe we need to abstract and remove all the target
> specific from cross-base.scm into new files. I haven't thought about the
> actual implementation yet, but it could be something like what I did
> with (cross-kernel-headers ...), which simplifies how (cross-libc ...)
> chooses which headers to use.
>
> Everyone please share any ideas you have :-)
I moved code that relates to phases to a new (gnu build cross-toolchain)
module in commit 3593e5d5c50b08cf69739aac98cd7c89247fa6da. We could
probably do the same configure flags and make flags.
Going further I was thinking we could have an abstract representation of
“platform” to cater to GNU/Linux (including on ARM), GNU/Hurd, and maybe
MinGW, say:
;; Description of a platform supported by the GNU system.
(define-record-type* <platform> platform make-platform
platform?
(triplet platform-triplet) ;"x86_64-linux-gnu"
(system-type platform-system-type) ;"x86_64-linux"
(linux-architecture platform-linux-architecture) ;"amd64"
(kernel platform-kernel) ;<package>
(ld.so platform-ld.so) ;"ld-linux-x86-64.so.2"
(gcc platform-gcc) ;<package>
(binutils platform-binutils) ;<package>
(libc platform-libc)) ;<package>
Probably this should include cross-compilation hints somehow.
Ideally it should be something like “sysdeps” in glibc: a mechanism that
allows us to separate platform-specific code from generic code.
Ludo’.
