Software requirements

Operating system

Recommended operating system is Red Hat Enterprise Linux (RHEL) / Rocky Linux versions 8 or 9. For this operating systems we provide RPMs with pre-built binaries to simplify deployment. On experimental basis we also build repositories for Ubuntu 22.04 and 24.04.

Running Jungfraujoch on Red Hat Enterprise Linux 7 is currently not tested and not recommended, but likely possible with providing some packages from external repositories.

The desktop viewer jfjoch_viewer (only) can additionally be built on Windows 11 with Visual Studio 2026 (MSVC), CUDA 13.3 and Qt 6.11 — see jfjoch_viewer ▸ Building from source on Windows. The Windows installer bundles the Qt runtime, and on the CUDA build the CUDA runtime (cuFFT) as well, so end users need neither Qt nor a CUDA toolkit installed — only an NVIDIA GPU driver for the GPU path. The rest of Jungfraujoch is Linux-only.

Software dependencies

Required:

  • C++20 compiler and C++20 standard library; recommended GCC 11+ or clang 14+ (Intel OneAPI, AMD AOCC)

  • CMake version 3.26 or newer + a build tool (GNU make or Ninja)

  • zlib compression library

  • Eigen (header-only linear algebra library), version 3.4.x (the build requests Eigen3 3.4, which Eigen’s same-major-version rule does not satisfy with 5.x)

HDF5, libtiff and libjpeg-turbo used to be required system packages; they are now downloaded and built automatically by CMake (see the note below), so they no longer need to be installed.

Optional:

  • CUDA compiler version 12.8 or newer - required for the MX fast feedback indexer and GPU analysis

  • FFTW library - for indexing if GPU/CUDA is absent (also auto-downloaded by CMake)

  • Node.js - to build the frontend

  • Qt version 6 (for jfjoch_viewer)

Many further dependencies (spdlog, Zstandard, HDF5, slsDetectorPackage, libzmq, libtiff, libjpeg-turbo, Ceres, the fast feedback indexer, Catch2, …) are downloaded automatically by CMake and statically linked; building therefore requires network access on the first configure. zlib and Eigen are the exception — they must be preinstalled (found via find_package); on Windows, where they are not present system-wide, install them into a prefix and point CMAKE_PREFIX_PATH at it (see Building from source on Windows). Others are vendored directly in the source tree. The complete list of third-party components, with copyright holders, licenses and verbatim license texts, is in Third-party software notices and the licenses/ directory.