Please add support for Android armv8l architecture

[majesticSplendor]

When I tried compiling panda3d on termux I got this error :
Android architecture must be arm, armv7a, arm64, mips, mips64, x86 or x86_64
Build terminated.

[rdb]

Hi, welcome to the community!

What happens if you pass an --arch flag to makepanda? I am not sure if armv8l is 32-bit or 64-bit? You could try passing --arch arm64 or --arch armv7a.

[majesticSplendor]

Hi, thank you for your quick response!

@rdb

I am not sure if armv8l is 32-bit or 64-bit?

armv8l is 32 bit mode in 64 bit CPU.

passing ‘–arch armv7a’ gives this error

EDIT:
After a bit googling I found this:

The original ARM architecture was 32 bits. Starting with ARMv8, a 64-bit instruction set is also supported. ARMv8-A CPUs are supposed to support both modes, so such a chip effectively gives you two architectures in one. Generally arm or aarch32 refers to the 32-bit mode, and arm64 or aarch64 for the 64-bit mode.

The armv8l mode in uname means your kernel is built to run on an ARMv8 chip in its 32-bit mode. (A kernel built for the 64-bit mode would say arm64 here.) The l stands for “little endian”; the architecture supports both little-endian and big-endian modes, with little-endian being much more widely used. armv8b would be 32-bit big-endian mode.

The lscpu and /proc/cpuinfo data are directly querying the capabilities of your CPU hardware. The Cortex A-53 is a full ARMv8-A implementation and they are correctly telling you that it physically supports a 64-bit mode.

The uname -m and dpkg --print-architecture commands are querying the operating system, not the hardware. So they say you are running a 32-bit kernel and OS. Thus you are not able to use the 64-bit mode with this kernel/OS install. For all intents and purposes, right now you have a 32-bit arm / aarch32 CPU.

The ARMv8 architecture is backwards compatible with ARMv7, so your armv7l package will run on it. The armv8/arm64 package will not, unless you want to reinstall the entire OS first.
—source stackoverflow

[majesticSplendor]

Also, I have already installed all the required dependencies but I still get those warnings…

[rdb]

Doesn’t look like you have a lot of thirdparty packages installed on your system, did you install the recommended packages listed in README.md? Do you have any compilers on your system? What are they called?

[majesticSplendor]

@rdb

Doesn’t look like you have a lot of thirdparty packages installed on your system, did you install the recommended packages listed in README.md?

Yes, I installed all the packages listed in README.md. I also tried install them again and it shows that they are already the newest version.

@rdb

Do you have any compilers on your system? What are they called?

I have clang-15.

[rdb]

What are the names of the clang executables? Which prefix do they have?

[majesticSplendor]

clang, gcc, clang++ and g++.

[rdb]

So you have no prefixed compiler commands at all?

[majesticSplendor]

Sorry I almost forgot about this thread…
After reading some docs about android, termux, compilers and libgdx I was able to create a basic app with a 3d scene, skybox, shaders and gltf model rendered on screen.
So I think the problem was with panda3d…also I found that armv8l is backwards compatible with armv7a because libgdx also doesn’t have any native library for armv8l.