Prerequisites for building zint
-------------------------------

Prerequisites are git, cmake, make, gcc and gcc-c++, e.g. Ubuntu/Debian

    sudo apt install git cmake build-essential

or Fedora (git, make and gcc should already be installed)

    sudo dnf install cmake gcc-c++

libpng is optional but necessary for PNG support, e.g. Ubuntu/Debian

    sudo apt install libpng-dev

or Fedora

    sudo dnf install libpng-devel

Prerequisites for building zint-qt
----------------------------------

Sign up and download the Qt Maintenance Tool from
    https://www.qt.io/download-qt-installer

On Ubuntu/Debian you may need to install xinerama to run the tool:

    sudo apt install libxcb-xinerama0

Launch the tool and install the "Desktop gcc 64-bit" component for either Qt
5.15.2 or Qt 6 (>= 6.1).

Once Qt is installed you may need to tell CMake where it is:

    export CMAKE_PREFIX_PATH=<qt-version-dir>/gcc_64

e.g. export CMAKE_PREFIX_PATH=/opt/Qt/5.15.2/gcc_64

To build zint-qt you also need to install mesa (for OpenGL), e.g. Ubuntu/Debian

    sudo apt install mesa-common-dev libglu1-mesa-dev

or Fedora

    sudo dnf install mesa-libGL mesa-libGL-devel

Build
-----

The rest is standard CMake

    git clone https://git.code.sf.net/p/zint/code zint

    cd zint
    mkdir build
    cd build
    cmake ..
    make
    sudo make install

CMake options
-------------

A number of options are available:

ZINT_COVERAGE:BOOL=OFF # Set code coverage flags
ZINT_DEBUG:BOOL=OFF    # Set debug compile flags
ZINT_NOOPT:BOOL=OFF    # Set no optimize compile flags
ZINT_SANITIZE:BOOL=OFF # Set sanitize compile/link flags
ZINT_STATIC:BOOL=OFF   # Build static library
ZINT_TEST:BOOL=ON      # Set test compile flag
ZINT_USE_PNG:BOOL=ON   # Build with PNG support
ZINT_USE_QT:BOOL=ON    # Build with Qt support

For details on ZINT_TEST and building the zint test suite, see
"backend/tests/README".