[webkit-dev] JavaScriptCore on Fuchsia

[Adam Barth]

Hi Yusuke,

For some reason, your original email missed my inbox.

On Wed, Jun 27, 2018 at 7:53 PM Michael Catanzaro <mcatanzaro at igalia.com> wrote:
> On Tue, Jun 26, 2018 at 6:49 PM, Yusuke SUZUKI <utatane.tea at gmail.com>
> wrote:
> > My suggestion is introducing Fushcia port, adding both
> > PLATFORM(FUSHCIA) and OS(FUSHCIA) ifdefs.
> > Use OS(FUSHCIA) when the change is b/c of Fushcia's APIs. And use
> > PLATFORM(FUSHCIA) to change
> > the policy of the released build (e.g. enabling / disabling FTL JIT
> > etc.).

So far, I seem to be able to control those features on a build level
through CMake.

> > By doing so, JSCOnly port also becomes available in Fushcia. And it
> > means that Fushcia port can benefit
> > from JSCOnly port's work for making WTF and JSC portable.

Fuchsia appears to need to be a port in the sense of having an
OptionsFuchsia.cmake in order to set the target triple to
x86_64-unknown-fuchsia.  I didn't find any other uses of
CMAKE_CXX_COMPILER_TARGET in WebKit.  Is there some other mechanism
folks use to set the target triple (or maybe other folks aren't
crosscompiling using clang)?

> I wonder if PLATFORM(FUSHCIA) is even needed? Maybe OS(FUSHCIA) would
> suffice? Then instead of a separate Fushcia port, we would just have
> the existing JSCOnly port running on Fuschia.

That sounds like a good approach to start with.  If we run into
trouble, we might need to adjust.

Adam