[Toybox] toys/android/log.c with android NDK?

[enh]

well, that took a lot longer than expected... but r17beta1 is out now
with an up-to-date libc.a.

download: https://github.com/android-ndk/ndk/wiki#current-beta-release
release notes: https://github.com/android-ndk/ndk/wiki/Changelog-r17-beta1

standalone toolchain example:
https://developer.android.com/ndk/guides/standalone_toolchain.html#building_open_source_projects_using_standalone_toolchains

(https://developer.android.com/ndk/downloads/index.html should update
later this afternoon.)

On Fri, Feb 16, 2018 at 7:51 AM, Rob Landley <rob at landley.net> wrote:
>
> n 02/14/2018 06:30 PM, enh wrote:
>> On Wed, Feb 14, 2018 at 3:36 PM, Rob Landley <rob at landley.net> wrote:
>>> More to the point all of this _compiled_, meaning it's in the headers. And then
>>> it couldn't find it in the libraries. So there's a consistency issue somewhere.
>>
>> i suspect you said "--api 26" but then also tried to build a static
>> binary? in which case you linked against an api 21 libc.a. as i said
>
> Yup, has to be statically compiled to run on an ubuntu host.
>
>> (somewhere) earlier today, NDK r17 (and later) will have a modern
>> libc.a, but for NDK r16 you'll want to either (a) set --api 21 for
>> static binaries or (b) build a dynamic binary for --api 26.
>
> Ok, I'll try again when the new one comes out.
>
>> longer term (https://android.googlesource.com/platform/ndk/+/master/docs/Roadmap.md)
>> we want to make standalone toolchains obsolete by just teaching the
>> clang driver everything it needs to know about Android, so hopefully
>> before the end of the year it's just a matter of `CC=ndk-clang make
>> defconfig`.
>
> I don't have context to know what's involved there.
>
>>> I can try to fix it up in lib/portability.c...?
>>
>> the __android_log_write thing might need a fix on your side: i suspect
>> you're missing a -l for the NDK liblog?
>
> I'll try to fix it up when I get the new ndk.
>
> Thanks,
>
> Rob