Build instructions

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Build instructions


Debian Jessie

First, make sure that the required packages for Qt5 development of your distribution are installed, for Debian and Ubuntu these are:

apt-get install qt5-default qt5-qmake qtbase5-dev-tools qttools5-dev-tools \
    build-essential libboost-dev libboost-system-dev \
    libboost-filesystem-dev libboost-program-options-dev libboost-thread-dev \
    libssl-dev libdb++-dev libminiupnpc-dev

then execute the following:


Alternatively, install Qt Creator and open the file.

An executable named OTOCASH-qt will be built.

Debian Stretch

Install libssl1.0-dev instead of libssl-dev


Windows build instructions:

  • Download the QT Windows SDK and install it. You don’t need the Symbian stuff, just the desktop Qt.
  • Compile openssl, boost and dbcxx.
  • Open the .pro file in QT creator and build as normal (ctrl-B)

Mac OS X

  • Download and install the Qt Mac OS X SDK. It is recommended to also install Apple’s Xcode with UNIX tools.
  • Download and install MacPorts.
  • Execute the following commands in a terminal to get the dependencies:
sudo port selfupdate
sudo port install boost db48 miniupnpc
  • Open the .pro file in Qt Creator and build as normal (cmd-B)

Build configuration options

UPNnP port forwarding

To use UPnP for port forwarding behind a NAT router (recommended, as more connections overall allow for a faster and more stable OTOCASH experience), pass the following argument to qmake:

qmake "USE_UPNP=1"

(in Qt Creator, you can find the setting for additional qmake arguments under “Projects” -> “Build Settings” -> “Build Steps”, then click “Details” next to qmake)

This requires miniupnpc for UPnP port mapping. It can be downloaded from UPnP support is not compiled in by default.

Set USE_UPNP to a different value to control this:

USE_UPNP=-no UPnP support, miniupnpc not required;
USE_UPNP=0(the default) built with UPnP, support turned off by default at runtime;
USE_UPNP=1build with UPnP support turned on by default at runtime.

Notification support for recent (k)ubuntu versions

To see desktop notifications on (k)ubuntu versions starting from 10.04, enable usage of the FreeDesktop notification interface through DBUS using the following qmake option:

qmake "USE_DBUS=1"

Generation of QR codes

libqrencode may be used to generate QRCode images for payment requests. It can be downloaded from, or installed via your package manager. Pass the USE_QRCODE flag to qmake to control this:

USE_QRCODE=0(the default) No QRCode support – libarcode not required
USE_QRCODE=1QRCode support enabled

Berkely DB version warning

A warning for people using the static binary version of OTOCASH on a Linux/UNIX-ish system (tl;dr: Berkely DB databases are not forward compatible).

The static binary version of OTOCASH is linked against libdb 5.0 (see also this Debian issue).

Now the nasty thing is that databases from 5.X are not compatible with 4.X.

If the globally installed development package of Berkely DB installed on your system is 5.X, any source you build yourself will be linked against that. The first time you run with a 5.X version the database will be upgraded, and 4.X cannot open the new format. This means that you cannot go back to the old statically linked version without significant hassle!

Ubuntu 11.10 warning

Ubuntu 11.10 has a package called ‘qt-at-spi’ installed by default. At the time of writing, having that package installed causes OTOCASH-qt to crash intermittently. The issue has been reported as launchpad bug 857790, but isn’t yet fixed.

Until the bug is fixed, you can remove the qt-at-spi package to work around the problem, though this will presumably disable screen reader functionality for Qt apps:

sudo apt-get remove qt-at-spi

Note : The latest version that can be used to compile OTOCASH wallets is Ubuntu 16