build: support shared objects (-buildmode=shared) for more than just linux/amd64

[vbatts]

This issue is a tracker for supporting additional GOOS/GOARCH shared objects than just linux/amd64.

While packaging go1.5 for fedora, which has the goal/requirement of shared objects. This is a security and update-ability requirement and not something I intend to partially deploy for general consumption.
Initially this target would be linux/386 and linux/arm, though arm64, etc would follow I'm sure.

https://bugzilla.redhat.com/show_bug.cgi?id=1256525 is the tracker for adding shared objects to the fedora golang rpms.

/cc @mwhudson @ianlancetaylor

[mwhudson]

FWIW, I have implementations for arm and arm64 done and am working on getting them cleaned up for submission soon. I have done some work on ppc64le and have come to the conclusion that it's going to be a bit of a pain. I keep avoiding thinking about 386 -- fancy helping out on that? :-)

[vbatts]

Where are your working branches for arm, etc?

[mwhudson]

https://github.com/mwhudson/go/tree/dismember-R_ADDRARM64

[vbatts]

yeah. not a trivial change set.

On Wed, Aug 26, 2015 at 6:27 PM, Michael Hudson-Doyle <
notifications@github.com> wrote:

https://github.com/mwhudson/go/tree/dismember-R_ADDRARM64

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Reply to this email directly or view it on GitHub
#12346 (comment).

[mwhudson]

No. I'll have a better organized set of changes for arm64 only up today I hope.

[mwhudson]

This can be closed now :-)

[mwhudson]

Well, unless someone is planning on working on ppc64(be) or mips or non-linux (I'm certainly not)

[vbatts]

right on. I'm hoping some release notes will break down the availability better for folks.
https://github.com/golang/go/blob/master/src/cmd/go/build.go#L347 looks pretty great.