feather/HACKING.md

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# Documentation for developers
Feather is developed primarily on Linux. It uses Qt 5.15.* and chances are that your
distro's package manager has a lower version. It is therefore recommended that you install
Qt manually using the online installer, which can be found here: https://www.qt.io/download
(under open-source).
## Jetbrains Clion
Feather was developed using JetBrains Clion since it integrates nicely
with CMake and comes with a built-in debugger. To pass CMake flags to CLion,
go to `File->Settings->Build->CMake`, set Build Type to `Debug` and set your
preferred CMake options/definitions.
## Requirements
### Ubuntu/Debian
```bash
apt install -y git cmake libqrencode-dev build-essential cmake libboost-all-dev \
miniupnpc libunbound-dev graphviz doxygen libunwind8-dev pkg-config libssl-dev \
libzmq3-dev libsodium-dev libhidapi-dev libnorm-dev libusb-1.0-0-dev libpgm-dev \
libprotobuf-dev protobuf-compiler libgcrypt20-dev
```
## Mac OS
```bash
brew install boost zmq openssl libpgm miniupnpc libsodium expat libunwind-headers \
protobuf libgcrypt qrencode ccache cmake pkgconfig git
```
## CMake
After installing Qt you might have a folder called `/home/$user/Qt/`. You need to pass this to CMake
via the `CMAKE_PREFIX_PATH` definition. For me this is:
```
-DCMAKE_PREFIX_PATH=/home/dsc/QtNew/5.15.0/gcc_64
```
There are some Monero/Feather related options/definitions that you may pass:
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- `-DXMRIG=OFF` - disable XMRig feature
- `-DTOR_BIN=/path/to/tor` - Embed a Tor executable inside Feather
- `-DDONATE_BEG=OFF` - disable the dreaded donate requests
And:
```
-DMANUAL_SUBMODULES=1
-DUSE_DEVICE_TREZOR=OFF
-DUSE_SINGLE_BUILDDIR=ON
-DDEV_MODE=ON
```
If you have OpenSSL installed in a custom location, try:
```
-DOPENSSL_INCLUDE_DIR=/usr/local/lib/openssl-1.1.1g/include
-DOPENSSL_SSL_LIBRARY=/usr/local/lib/openssl-1.1.1g/libssl.so.1.1
-DOPENSSL_CRYPTO_LIBRARY=/usr/local/lib/openssl-1.1.1g/libcrypto.so.1.1
```
I prefer also enabling verbose makefiles, which may be useful in some situations.
```
-DCMAKE_VERBOSE_MAKEFILE=ON
```
Enable debugging symbols:
```bash
-DCMAKE_BUILD_TYPE=Debug
```
## Feather
It's best to install Tor locally as a service and start Feather with `--use-local-tor`, this
prevents the child process from starting up and saves time.
#### Ubuntu/Debian
```bash
apt install -y tor
sudo service tor start
```
#### Mac OS
```bash
brew install tor
brew services start tor
```
To skip the wizards and open a wallet directly use `--wallet-file`:
```bash
./feather --use-local-tor --wallet-file /home/user/Monero/wallets/bla.keys
```
It is recommended that you use `--stagenet` for development. Testnet is also possible,
but you'll have to provide Feather a testnet node of your own.