[Toybox] Fun with the android NDK.

[Rob Landley]

On 08/31/2018 07:10 PM, Ryan Prichard wrote:
> FWIW: the NDK version is available in these files:
>  - source.properties
>  - sysroot/usr/include/android/ndk-version.h

There's no source.properites under the install but there is an ndk-version.h
with 17.0.1 in it. Good to know, thanks.

>     2) I applied the attached patch, some bits of which should get merged and others
>     I dunno about. (The structure ping wanted... did that git fixed upstream
>     already?)
> 
> It looks like there's a struct icmphdr in the NDK's UAPI header linux/icmp.h.
> That header isn't usable on my glibc system because it conflicts with the glibc
> netinet/ip_icmp.h header, but maybe it's OK to use with the NDK, though?

I hit that conflict too. The problem is being ok to use with the NDK _now_
doesn't mean it won't add its own later and then hit the same conflict. (That's
why I put the local copy of the structucture definition under a new name in my
patch; ugly but avoids the conflict.)

What I'd like to do is get to the point where defconfig builds under the NDK
(switching off the appropriate commands as necessary in the compile-time
probes), and then regression test both ways (new NDK release and new toybox
release) as part of my quarterly release prep.

Another thing I'd like to do is have new (static) toybox binaries I can download
and use on old android releases. I was doing that with musl-cross-make but
bionic/llvm would be better. (They're _still_ selling Android K tablets at the
grocery store, and my Nexus 5 got upgraded to M a year after I bought it but
hasn't even had a bugfix release since 2016.) I'm aware stuff like ps wouldn't
have the selinux annotations to work right and things like the logger bindings
aren't available in the NDK, but for things like sed...

Except support for 32 bit's being dropped at some point and I dunno the schedule
of that in the ndk... hmmm. Is there a newsletter on this sort of thing? An
android version of lwn.net maybe?

Rob