[pkg-go] Bug#872402: Bug#872402: golang-golang-x-tools-dev: Does not work on mips*

[Martín Ferrari]

On 24/08/17 19:11, Shengjing Zhu wrote:
> Control: severity -1 normal
> 
> On Thu, Aug 24, 2017 at 10:37 PM, Martín Ferrari <tincho at debian.org> wrote:
>> Yes, sorry, I was confused with x/tools, which has disabled tests. This
>> one does not get built in other arches, so the relevant tests are not
>> executed.. Maybe we should make it arch:any...?

> I think the CI like ci.d.n should run on more archs instead...

Yeah, that'd be ideal :)

> ok, so I read the issue on https://github.com/golang/go/issues/18031
> 
> I don't have mips env to verify comments by foka. But what foka said
> in that issue is,
> gccgo reports mipsel and mips both as `mipso32`. So we need pass
> another `-tags` to distinguish the two archs.
> Unless gccgo has corrent build tip, we can only manually add `-tags
> mips` or `-tags mipsel`.

I have just tested that, with eller for mips(64)el and minkus for mips.
And sadly, that is true:

eller (mipsel):
$ go env
GOARCH="mipso32"

eller (mips64el):
$ go env
GOARCH="mipsn64"

minkus (mips):
$ go env
GOARCH="mipso32"

The bug referenced above says this might be already fixed in gccgo, and
looking at the commit history, it does seem to be true:
https://go.googlesource.com/gofrontend/+/3f713ddb2a9a2a736f3a12d71c56cb7fd444afba%5E%21/

This harmonizes the arch names with gc, and as a side effect, fixes the
missing little-endian marker.

The problem is that gcc and friends make my head hurt, and I don't
really understand if this made it into the 7.2 release or not. Seeing
that eller has libgo 7.2, I assume it did not.. Does anybody understand
all this?

> BTW, let me down grade this bug's severity first since I think we have
> workaround for that :)

OK.

-- 
Martín Ferrari (Tincho)