--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/mupdf-source/thirdparty/zint/README.linux	Mon Sep 15 11:43:07 2025 +0200
@@ -0,0 +1,135 @@
+% README.linux 2024-10-04
+% Tested on Ubuntu 20.04.4 LTS, Ubuntu 22.04 LTS, Ubuntu 24.04 LTS and
+% Fedora Linux 40 (Workstation Edition)
+
+1. 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
+
+Then either download the source code tarball
+
+    wget -O zint-2.13.0-src.tar.gz \
+        https://sourceforge.net/projects/zint/files/zint/2.13.0/zint-2.13.0-src.tar.gz/download
+    tar xf zint-2.13.0-src.tar.gz
+    cd zint-2.13.0-src
+
+or clone the latest source
+
+    git clone https://git.code.sf.net/p/zint/code zint
+    cd zint
+
+
+2. Prerequisites for building zint-qt
+=====================================
+
+zint-qt can be built with either Qt5 (preferred) or Qt6. First, 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
+
+zint-qt has issues running on Wayland so sets X11 as the Qt platform (via the environment variable
+"QT_QPA_PLATFORM=xcb") on startup unless already set.
+
+2.1. Using Qt packages
+----------------------
+
+If packages for Qt exist for your distro, it might be easiest to use them, although knowing
+what their ever-changing names and contents are isn't. A complication is that zint-qt uses 2 Qt
+components beyond the basic setup: Qt UI Tools (for dynamically loading the symbology-specific
+tabs), and Qt SVG (for rendering icons).
+
+E.g. on Ubuntu 22.04 or 24.04
+
+    sudo apt install qtbase5-dev qttools5-dev qttools5-dev-tools libqt5svg5-dev
+
+or Ubuntu 20.04
+
+    sudo apt install qt5-default qt5-uitools
+
+or Fedora (not recommended)
+
+     sudo dnf install qt5-qtbase-devel qt5-qttools-devel qt5-qttools-static qt5-qtsvg-devel
+
+You may need to tell CMake where to find the ".cmake" modules:
+
+    export CMAKE_MODULE_PATH=<cmake-module-path>/Qt5
+
+e.g. CMAKE_MODULE_PATH=/usr/lib/x86_64-linux-gnu/cmake/Qt5
+
+2.2. Using the Qt Maintenance Tool
+----------------------------------
+
+Alternatively, for a more consistent experience, 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 (preferred)
+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
+
+
+3. Build
+========
+
+The rest is standard CMake
+
+    cd zint
+    mkdir build
+    cd build
+    cmake ..
+    make
+    sudo make install
+
+
+4. 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_FRONTEND:BOOL=ON  # Build frontend
+ZINT_NOOPT:BOOL=OFF    # Set no optimize compile flags
+ZINT_SANITIZE:BOOL=OFF # Set sanitize compile/link flags
+ZINT_SHARED:BOOL=ON    # Build shared library
+ZINT_STATIC:BOOL=OFF   # Build static library
+ZINT_TEST:BOOL=OFF     # Set test compile flag
+ZINT_UNINSTALL:BOOL=ON # Add uninstall target
+ZINT_USE_PNG:BOOL=ON   # Build with PNG support
+ZINT_USE_QT:BOOL=ON    # Build with Qt support
+ZINT_QT6:BOOL=OFF      # If ZINT_USE_QT, use Qt6
+
+which can be set by doing e.g.
+
+    cmake -DZINT_SANITIZE=ON ..
+
+For details on ZINT_TEST and building the zint test suite, see "backend/tests/README".