Support for -buildmode=shared on darwin/amd64

[piotr....@gmail.com]

Are there any plans to support -buildmode=shared for platform darwin/amd64 ? Or possible timeframe / target version of language ?

[Ian Lance Taylor]

On Mon, Sep 19, 2016 at 12:23 PM, <piotr....@gmail.com> wrote:
> Are there any plans to support -buildmode=shared for platform darwin/amd64 ?
> Or possible timeframe / target version of language ?

I'm not aware of anybody currently working on that.

Ian

[Jaana Burcu Dogan]

+matt

AFAIK, Splice is working on it.

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[Matt Aimonetti]

We looked into the TLS issue on Mac which is the same as the one on Windows. The current implementation is a hack and our "fix" is also a sad hack (hence why we didn't open a PR). Someone will need to spend time looking at how to properly handle thread local storage instead of starting at a semi-random address and hope everything will go well. Another alternative that is being discussed in a github issue around the same issue on Windows is to use -buildmode=archive and use an external link (instead of using the Go linker).

I'm adding Evan to this thread since he has a bunch of experience with linkers and was looking for an excuse to dig into Go's ;)

- Matt

On Thu, Sep 22, 2016 at 1:55 PM Jaana Burcu Dogan <j...@golang.org> wrote:

+matt

AFAIK, Splice is working on it.

On Mon, Sep 19, 2016 at 2:27 PM, Ian Lance Taylor <ia...@golang.org> wrote:

On Mon, Sep 19, 2016 at 12:23 PM,  <piotr....@gmail.com> wrote:
> Are there any plans to support -buildmode=shared for platform darwin/amd64 ?
> Or possible timeframe / target version of language ?

I'm not aware of anybody currently working on that.

Ian

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[Michael Hudson-Doyle]

Handling it hackishly is proooobably ok for -buildmode=shared (or at least, not significantly worse than the current situation) but proper handling would be needed for -buildmode=c-shared.

- Matt

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