Initial ARM64 (aarch64-linux-gnu) Support

[jamesmcclain]

The aarch64-linux-gnu library is linked against GDAL 2.4 because that was was easily available in the Debian Buster package repository. The build generated here has not been tested, though a separate build on an ARM64 EC2 instance did pass all tests.

• Test on Macintosh
• Test on x86_64-linux-gnu
• Test on aarch64-linux-gnu
• Update README.md, &c.

Closes #106

[jamesmcclain]

https://oss.sonatype.org/content/repositories/snapshots/com/azavea/geotrellis/gdal-warp-bindings/1.1.2-aarch64-SNAPSHOT/

[jamesmcclain]

@pomadchin Please test to see if the Macintosh version of these still works. The only change that should be visible from the perspective of the Macintosh code is that the file name of the shared library has changed, so I anticipate that it should work.

[jamesmcclain]

With the addition of a second architecture, #91 is beginning to look more appealing. That would also eliminate concerns such as those raised in #100 . (It should also be noted that on Linux at least, many of these concerns can be dissolve by just creating appropriately-named symbol links to GDAL shared libararies.)

[pomadchin]

Hmm, there is GDAL 3.2 in unstable packages (see: https://packages.debian.org/search?keywords=gdal) would it be possible just to use GDAL 3.2?

[pomadchin]

Works good on Mac 🟢 !

[pomadchin]

Everything work nice and artifacts seem to be published correctly:

My only question is about GDAL 3.2 arm bindings, is it possible to use the unstable repo (still better in my opinion than the outdated GDAL 2.x)? Or there are some concerns related to that?

[jamesmcclain]

Everything work nice and artifacts seem to be published correctly:

Whoops, I think ...SNAPSHOT-3.jar is the one that needs to be tested (the ...SNAPSHOT.jar was created by an earlier version of that PR branch, sorry for not saying that earlier).

My only question is about GDAL 3.2 arm bindings, is it possible to use the unstable repo (still better in my opinion than the outdated GDAL 2.x)? Or there are some concerns related to that?

Yes, it is possible, but I (I think that I) remember ARM packages not being available for unstable when I was trying to put this together over the weekend (or something like that). In any case, I am considering just linking using -l:libgdal.so which would definitely (probably) fix this problem, but might be undesirable for other reasons.

[pomadchin]

@jamesmcclain yea, that is the contents of the gdal-warp-bindings-1.1.2-aarch64-20210518.015727-3.jar looked through the sonatype viewer. I confirmed it manually as well though, all is good 💯

hmm according to https://packages.debian.org/sid/libgdal-dev it is here 👀

[jamesmcclain]

@jamesmcclain yea, that is the contents of the gdal-warp-bindings-1.1.2-aarch64-20210518.015727-3.jar looked through the sonatype viewer. I confirmed it manually as well though, all is good

hmm according to https://packages.debian.org/sid/libgdal-dev it is here

👁️ 👁️