# Cross-compilling Bulwark wallet for armhf architecture (Raspberry Pi 2)

## Build successful tested on Ubuntu Server 18.04 LTS (x86-64)

### 1. Install build essential packages (for non-GUI wallet)

```
sudo apt-get install build-essential libtool autotools-dev automake pkg-config libssl-dev libevent-dev bsdmainutils python3 libboost-system-dev libboost-filesystem-dev libboost-chrono-dev libboost-program-options-dev libboost-test-dev libboost-thread-dev git
```

### 2. Install ARM cross compiler toolchain

```
sudo apt-get install g++-arm-linux-gnueabihf
```

### 3. Clone bulwark repo

```
git clone https://github.com/bulwark-crypto/Bulwark.git
```

### 4. Switch branch to specific wallet version

```
cd Bulwark
git checkout 1.3.1
```

### 5. Pull and build all dependencies

```
cd depends
make HOST=arm-linux-gnueabihf NO_QT=1 NO_UPNP=1 -j$(nproc)
```

### 6. Generate configure file

```
cd ..
./autogen.sh
```

### 7. Change some autogenerated options (if you need so)

_Below disabled graphical UI, UPNP (firewall-jumping support) and ZMQ notifications._

```
./configure --prefix=`pwd`/depends/arm-linux-gnueabihf --with-gui=no --without-miniupnpc --disable-zmq
```

### 8. Compile using all cores

```
make -j$(nproc)
```

### 9. Find built in last step binaries and manual copy them to RPi 2 device

```
find src -maxdepth 1 -type f -executable -exec file {} \; | grep -Eo "^([^,]+,){6}"
```


## On RPi 2 device (tested with ArchLinuxARM-rpi-2)

_Better to do all steps from non-root user_

### 1. Copy binaries to system directories

```
sudo cp bulwarkd /usr/local/bin
sudo cp bulwark-cli /usr/local/bin
sudo cp bulwark-tx /usr/local/bin
```

### 2. Write required parameters to bulwark.conf (also add staking=1 if you want to stake coins)

```
cat > ~/.bulwark/bulwark.conf << EOL
rpcuser=bulwark
rpcpassword=some_strong_password
EOL
```

### 3. Create systemd service

_Change username `SOMEUSER` to yours_

```
cat > /etc/systemd/system/bulwarkd.service << EOL
[Unit]
Description=Bulwarks's distributed currency daemon
After=network.target
[Service]
Type=forking
User=SOMEUSER
WorkingDirectory=/home/SOMEUSER
PIDFile=/home/SOMEUSER/.bulwark/bulwarkd.pid
ExecStart=/usr/local/bin/bulwarkd -daemon -conf=/home/SOMEUSER/.bulwark/bulwark.conf -datadir=/home/SOMEUSER/.bulwark
ExecStop=/usr/local/bin/bulwark-cli -conf=/home/SOMEUSER/.bulwark/bulwark.conf -datadir=/home/SOMEUSER/.bulwark stop
Restart=on-failure
RestartSec=1m
StartLimitIntervalSec=5m
StartLimitInterval=5m
StartLimitBurst=10
[Install]
WantedBy=multi-user.target
EOL
```

### 4. Activate and run service

```
sudo systemctl enable bulwarkd
sudo systemctl start bulwarkd
```

### 5. Check wallet status (will take some time to sync blocks)

```
watch bulwark-cli getinfo
```