D for Android

[Rikki Cattermole via Digitalmars-d]

On 8/05/2015 6:33 p.m., Vadim Lopatin wrote:
> On Thursday, 7 May 2015 at 15:58:01 UTC, Joakim wrote:
>> On Sunday, 17 August 2014 at 18:19:29 UTC, Joakim wrote:
>>> I'll keep updating the wiki with more info, how to build for the
>>> command-line and run the druntime/phobos unit tests, along with
>>> directions for future work.
>>
>> An update: I tinkered with ldc and Android/ARM for the hackathon.
>>  Didn't get that working yet, but I took Dan Olson's advice to reuse
>> the existing llvm TLS function calls and got ldc to work with
>> Android/x86 a couple days ago.
>>
>> 41 of 42 druntime modules' tests pass: only core.internal convert
>> doesn't, but that module's tests aren't normally run by ldc anyway.
>> Around 15 of 71 phobos modules' tests fail somewhere, most likely
>> related to "long double" issues that either need to be backported, as
>> git master for ldc is still using a year-old druntime/phobos that
>> doesn't have some subsequent Android PRs, or fixed, but I haven't
>> looked into those much yet.  Obviously, I can reuse some of this work
>> for Android/ARM, so it should help.
>>
>> I'm putting these in-progress patches online, in case my ultrabook
>> gets run over by a bus or someone else would like to tinker with
>> them.  All it required was a small patch to llvm:
>>
>> https://gist.github.com/joakim-noah/1fb23fba1ba5b7e87e1a
>>
>> and these patches for ldc, druntime, and phobos:
>>
>> https://gist.github.com/joakim-noah/bb0b04965470332d10e4
>> https://gist.github.com/joakim-noah/c27a0c7f2b5b65cdc268
>> https://gist.github.com/joakim-noah/07ed7ab1e5732ab91126
>>
>> Most of the druntime and phobos patches were backported from PRs
>> already committed in their respective master branches.  The only real
>> new work is in druntime's rt.sections_ldc.  It's all a bit hacky right
>> now, but I'll clean it up and submit PRs eventually.
>>
>> I tried the same approach that worked on x86 on ARM, with the similar
>> ARM GOT relocation as can be seen in the llvm patch above, but it
>> didn't work.  I'm reading up on the relevant ELF relocation info and
>> looking at the ARM assembly.  If anybody better versed with those
>> low-level linker details would like to chip in, that should be the
>> last remaining piece to get much of Android/ARM working.
>
> Good news! Thank you for your work!
>
> Once Android support become working, I'm planning to add Android support
> to DlangUI library. It's actually a port of C++ UI library I'm using on
> Android for Cool Reader GL app. So it should not be hard to port it back
> to Android.
>
> Best regards,
>       Vadim

I'm also looking forward to it. Assuming a getting started tutorial is 
made, I'll probably get Devisualization.Window support for it as well 
within a month.