I am doing a lot of wasm [1] compilation with ldc lately, and I have noticed that all symbols get exported regardless of what I try. E.g. strip-all wont strip any, etc.

When I strip things manually I can sometimes get something from 90kb to 9kb, so it really is substantial.

According to [2], on clang you can workaround this, by adding __attribute__((visibility("default"))) to each function you want exported.

Any similar solution for ldc?

[1] https://github.com/skoppe/spasm
[2] https://aransentin.github.io/cwasm/

On Saturday, 3 November 2018 at 11:12:42 UTC, Sebastiaan Koppe wrote:
> I am doing a lot of wasm [1] compilation with ldc lately, and I have noticed that all symbols get exported regardless of what I try. E.g. strip-all wont strip any, etc.

You could testdrive this PR: https://github.com/ldc-developers/ldc/pull/2894

-Johan

On Saturday, 3 November 2018 at 12:45:25 UTC, Johan Engelen wrote:
> On Saturday, 3 November 2018 at 11:12:42 UTC, Sebastiaan Koppe wrote:
>> I am doing a lot of wasm [1] compilation with ldc lately, and I have noticed that all symbols get exported regardless of what I try. E.g. strip-all wont strip any, etc.
>
> You could testdrive this PR: https://github.com/ldc-developers/ldc/pull/2894
>
> -Johan

That is nice. Will try tonight.

On Saturday, 3 November 2018 at 12:45:25 UTC, Johan Engelen wrote:
> On Saturday, 3 November 2018 at 11:12:42 UTC, Sebastiaan Koppe wrote:
>> I am doing a lot of wasm [1] compilation with ldc lately, and I have noticed that all symbols get exported regardless of what I try. E.g. strip-all wont strip any, etc.
>
> You could testdrive this PR: https://github.com/ldc-developers/ldc/pull/2894
>
> -Johan

The pull request works wonders! I just add 'export' where I need it, and voila!

I did notice some other garbage though... (compared to ldc1.12.0)

It might be completely unrelated to the pull request, but I noticed extra *__initZ wasm globals being generated (at least 50 extra I never saw with 1.12), as well as _d_arraybounds, some toHash's and opEquals, and more static data in the data section (probably related to the __init's).

Need to check without the pull request...

On Sunday, 4 November 2018 at 21:22:07 UTC, Sebastiaan Koppe wrote:
> It might be completely unrelated to the pull request, but I noticed extra *__initZ wasm globals being generated (at least 50 extra I never saw with 1.12), as well as _d_arraybounds, some toHash's and opEquals, and more static data in the data section (probably related to the __init's).

Are you sure you didn't just forget -betterC?

On Sunday, 4 November 2018 at 21:40:13 UTC, kinke wrote:
> Are you sure you didn't just forget -betterC?

I didn't, but dub did.

With dub 1.11.0, the betterC dflags I set in a dependency project got propagated to the root package.

With dub 1.12.0, that is no longer the case, and I have to set the betterC flag on both projects.

I went through the dub commits but couldn't find anything...