-name:Test artifactspresense

-name:Test artifactspresence

run:|

test_ubuntu_android_ndk:

name:Android NDK Build

test_android:

name:Android

runs-on:ubuntu-22.04

strategy:

fail-fast:false

matrix:

include:

-processor:armv7a

-uses:actions/checkout@v4

-run:git submodule update --init --recursive

-name:Install NDK ndk

-name:Install NDK

run:|

-name:Test artifacts presense

run:|

-name:Test artifacts presence

run:test -e build_artifacts/libusearch_c.so

-name:Set up Rust

-name:Build Rust

run:cargo build --target ${{ matrix.target }}

-name:Set up JDK 21

uses:actions/setup-java@v4

with:

java-version:"21"

distribution:"adopt"

-name:Test Java bindings with Android library

run:|

cmake --build build_artifacts --config Release

For Android development, you can cross-compile for ARM architectures without requiring the full Android NDK setup.

Here's an example targeting 32-bit ARM (`armeabi-v7a`):

sudo apt-get update

sudo apt-get install -y clang lld crossbuild-essential-armhf

CMAKE_TRY_COMPILE_TARGET_TYPE=STATIC_LIBRARY \

cmake -B build_artifacts \

-D CMAKE_C_COMPILER=clang \

-D CMAKE_CXX_COMPILER=clang++ \

-D CMAKE_C_COMPILER_TARGET=armv7-linux-gnueabihf \

-D CMAKE_CXX_COMPILER_TARGET=armv7-linux-gnueabihf \

-D CMAKE_SYSTEM_NAME=Linux \

-D CMAKE_SYSTEM_PROCESSOR=armv7 \

-D CMAKE_C_FLAGS="--target=armv7-linux-gnueabihf -march=armv7-a" \

-D CMAKE_CXX_FLAGS="--target=armv7-linux-gnueabihf -march=armv7-a" \

-D CMAKE_BUILD_TYPE=RelWithDebInfo \

-D USEARCH_BUILD_LIB_C=1 \

-D USEARCH_BUILD_TEST_CPP=0 \

-D USEARCH_BUILD_BENCH_CPP=0 \

-D USEARCH_USE_SIMSIMD=0 \

-D USEARCH_USE_FP16LIB=1

cmake --build build_artifacts --config RelWithDebInfo

file build_artifacts/libusearch_c.so# Verify the output

The resulting`libusearch_c.so` can be used in Android projects by placing it in`src/main/jniLibs/armeabi-v7a/` for 32-bit ARM or`arm64-v8a/` for 64-bit ARM.

Python bindings are built using PyBind11 and are available on[PyPi](https://pypi.org/project/usearch/).