Asyncpaste 
ANDROID_HOME=C:\Users\USER\AppData\Local\Android\Sdk
NDK_PATH=$ANDROID_HOME/ndk/26.1.10909125

# .cargo/config
[target.x86_64-linux-android]
linker = "C:/Users/USER/AppData/Local/Android/Sdk/ndk/26.1.10909125/toolchains/llvm/prebuilt/windows-x86_64/bin/x86_64-linux-android24-clang.cmd"

[target.i686-linux-android]
linker = "C:/Users/USER/AppData/Local/Android/Sdk/ndk/26.1.10909125/toolchains/llvm/prebuilt/windows-x86_64/bin/i686-linux-android24-clang.cmd"

[target.armv7-linux-androideabi]
linker = "C:/Users/USER/AppData/Local/Android/Sdk/ndk/26.1.10909125/toolchains/llvm/prebuilt/windows-x86_64/bin/armv7a-linux-androideabi24-clang.cmd"

[target.aarch64-linux-android]
linker = "C:/Users/USER/AppData/Local/Android/Sdk/ndk/26.1.10909125/toolchains/llvm/prebuilt/windows-x86_64/bin/aarch64-linux-android24-clang.cmd"

# add toolchains
rustup target add \
    x86_64-linux-android \
    i686-linux-android \
    armv7-linux-androideabi \
    aarch64-linux-android

# generate library
cargo new reverse-rs --lib

# reverse-rs/Cargo.toml
[package]
name = "reverse-rs"
version = "0.1.0"
edition = "2021"

[lib]
name = "reverse"
crate-type = ["cdylib"]

[dependencies]
uniffi = { version = "0.23.0" }

[build-dependencies]
uniffi = { version = "0.23.0", features = [ "build" ] }

// reverse-rs/src/reverse.udl
namespace reverse {
  string reverse_string([ByRef] string input_string);
  i32 reverse_integer(i32 input_integer);
};

# reverse-rs/build.rs
fn main() {
    uniffi::generate_scaffolding("./src/reverse.udl").unwrap();
}

# reverse-rs/src/lib.rs
uniffi::include_scaffolding!("reverse");

pub fn reverse_string(input_string: &str) -> String {
// ...

# build libs
cargo build --lib \
    --target x86_64-linux-android \
    --target i686-linux-android \
    --target armv7-linux-androideabi \
    --target aarch64-linux-android

# rename all libs reverse-rs/
❯ tree jniLibs
jniLibs
├── arm64-v8a
│   └── libuniffi_reverse.so
├── armeabi-v7a
│   └── libuniffi_reverse.so
├── x86
│   └── libuniffi_reverse.so
└── x86_64
    └── libuniffi_reverse.so
# reverse-rs/Cargo.toml
# ...

[[bin]]
name = "uniffi-bindgen"
path = "uniffi-bindgen.rs"

# reverse-rs/uniffi-bindgen.rs
fn main() {
    uniffi::uniffi_bindgen_main()
}

# generate kotlin bindings
cargo run --features=uniffi/cli \
    --bin uniffi-bindgen \
    generate src/reverse.udl \
    --language kotlin

# Create android library

// reverse-android/app/build.gradle
// ...
dependencies {
  // ...
  implementation "net.java.dev.jna:jna:5.13.0@aar"
  // ...
}

# Add libs and generated files

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