-android:
-       docker build -t test:latest . --file android.Dockerfile
-       # Use this command to get an interactive terminal inside docker:
-       #docker run -v $(shell pwd)/../../:/root/src -it test:latest /bin/bash
-       docker run --rm -v $(shell pwd)/../../:/root/src -t test:latest make _aarch64-android
-       cp -f ../../target/aarch64-linux-android/release/darkirc darkirc.aarch64-android
-
-# Invoked inside docker by the command above
-# We need to mount this directory as a volume using -v so docker can access it
-_aarch64-android:
-       cargo build --release --target aarch64-linux-android --package darkirc
+$(BIN): $(PROOFS_BIN) $(SRC)
+       RUSTFLAGS="$(RUSTFLAGS)" $(CARGO) build --target=$(RUST_TARGET) --release --package $@
+       cp -f ../../target/$(RUST_TARGET)/release/$@ $@
+       cp -f ../../target/$(RUST_TARGET)/release/$@ ../../$@
+
+# To build for android, install the Android NDK (Android Studio)
+# and then install cargo-ndk: `cargo install cargo-ndk`.
+# After that, add new android rust toolchains:
+# - rustup target add aarch64-linux-android
+# - rustup target add armv7-linux-androideabi
+# - rustup target add x86_64-linux-android
+# - rustup target add i686-linux-android
+$(BIN).android64:
+       RUSTFLAGS="$(RUSTFLAGS)" $(CARGO) ndk -t arm64-v8a -o ./jniLibs build --release --package $(BIN)
+       cp -f ../../target/aarch64-linux-android/release/$(BIN) $(BIN).$@
+
+$(BIN).android32:
+       RUSTFLAGS="$(RUSTFLAGS)" $(CARGO) ndk -t armeabi-v7a -o ./jniLibs build --release --package $(BIN)
+       cp -f ../../target/armv7-linux-androideabi/release/$(BIN) $(BIN).$@