Re: Reducing binary size (for emscripten)

Hi,

sure, have a look at:
https://github.com/hein09/vipster/tree/testing/libvipster/ioplugins
As you can see i don't use any exceptions there besides what spirit does
behind the curtains.
I guess the expectation parser makes my grammar very expectation heavy, but
changing it would complicate the overall grammar tremendously.
On the emscripten side, according to the documentation (
http://kripken.github.io/emscripten-site/docs/optimizing/Optimizing-Code.html#other-optimization-issues),
optimization levels other than -O0 disable C++ exceptions completely.
(I guess i should evaluate whether this invalidates my grammar before
caring about filesize :D But so far it still works...)
Nevertheless, whether it's -O2 or -Os or -Oz, the pwinput-parser never
drops below 3MB, considering that i want to add many more parsers that's
not a good outlook.

Sebastian

2017-07-27 19:06 GMT+02:00 Chris Beck <[email protected]>:

> Hi,
>
> I'm also hoping to use qi parsers I wrote with emscripten.
>
> Do you have any examples you can show? I agree that a simple qi parser
> should not lead to multiple megabytes of js, maybe there is some build
> option that can help? For instance are you using c++ exceptions in your
> parsers, and if not are you making sure emscripten turns that off? That can
> have a very large impact on js size.
>
> Chris
>
> On Jul 27, 2017 8:04 AM, "Sebastian Gsänger" <[email protected]>
> wrote:
>
> Hi,
>
> i have written some qi-parsers i'd like to include in a web-application
> via emscripten.
> Unfortunately, i seem to be unable to reach acceptable-file sizes, with
> even simple parsers reaching multiple megabytes.
>
> Has anyone experience with spirit+emscripten?
> And are there some general do-s and don't-s i should learn about,
> maybe some clang-specific tips?
>
> Thanks,
> Sebastian
>
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