FITS/XISF image viewer with multithreaded image loading

To get all dependencies install these packages

    sudo apt install qt6-base-dev qt6-declarative-dev libqt6opengl6-dev libraw-dev libexif-dev libcfitsio-dev libgsl-dev wcslib-dev cmake libzstd-dev libqt6sql6-sqlite

on OpenSUSE

    sudo zypper install gsl-devel libexif-devel libraw-devel wcslib-devel qt6-base-devel qt6-qml-devel libzstd-devel

MacOS X

To compile on MacOS install XCode first. Then install homebrew.

    homebrew install qt6 libraw cfitsio libexif libgsl wcslib

You may need to set CMAKE_PREFIX_PATH for Qt6 so CMake can find them.

First run this command to get libXISF updated

    git submodule update --init --recursive

Then to build run standard cmake sequence

    cmake -B build -S .
    cmake --build build
    ./build/tenmon