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+++ b/mupdf-source/thirdparty/zint/win32/README	Mon Sep 15 11:43:07 2025 +0200
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+% win32/README 2024-01-18
+
+Visual Studio 2022
+------------------
+
+To build the Zint library DLL and the command line tool "zint.exe" with PNG
+support for x86/Win32:
+
+Install git (https://git-scm.com/downloads)
+Install cmake (https://cmake.org/download/)
+
+Open a "Developer Command Prompt for VS 2022" (should be available under the
+"Visual Studio 2022" tab in the Start menu).
+
+Make sure git and cmake are in your PATH, e.g. (your paths may differ)
+
+  set "PATH=C:\Program Files\Git\cmd;%PATH%"
+  set "PATH=C:\Program Files\CMake\bin;%PATH%"
+
+Download zint, zlib and libpng by going to the directory you want to clone them
+into:
+
+  cd <project-directory>
+
+and cloning each:
+
+  git clone https://git.code.sf.net/p/zint/code zint
+  git clone https://git.code.sf.net/p/libpng/code lpng
+  git clone https://github.com/madler/zlib.git zlib
+
+First build zlib:
+
+  cd zlib
+  nmake -f win32\Makefile.msc clean
+  nmake -f win32\Makefile.msc
+  cd ..
+
+and then lpng:
+
+  cd lpng
+  nmake -f scripts\makefile.vcwin32 clean
+  nmake -f scripts\makefile.vcwin32
+  cd ..
+
+If you now open "%cd%\zint\win32\zint.sln" with Visual Studio 2022, you
+should be able to build the Release configuration for Win32.
+
+"zint.dll" and "zint.exe" will be in "zint\win32\Release".
+
+To build Zint Studio ("qtZint.exe"), you need to have Qt installed, which
+involves signing up for a Qt account and installing the Qt Maintenance Tool.
+(https://www.qt.io/download-qt-installer)
+Using this tool you can install various versions of Qt and various optional
+components.
+
+The following requires the "MSVC 2019 32-bit" component to be installed.
+
+As of writing Qt 5.15.2 is the latest release that includes this component and
+is used here. Add the location of this component to your PATH, e.g. (your path
+may differ):
+
+  set "PATH=C:\Qt\5.15.2\msvc2019\bin;%PATH%"
+
+Next build the Zint backend Qt library "QtZintDLL.lib":
+
+  cd zint\backend_qt
+  qmake backend_qt_zintdll.pro
+  nmake clean
+  nmake release
+  cd ..\..
+
+Then Zint Studio "qtZint.exe":
+
+  cd zint\frontend_qt
+  qmake frontend_qt_zintdll.pro
+  nmake clean
+  nmake release
+  cd ..\..
+
+This creates "zint\frontend_qt\release\qtZint.exe". It requires the Zint DLL to
+run, so add its location to your PATH:
+
+  set "PATH=%cd%\zint\win32\Release;%PATH%"
+
+You should now be able to run Zint Studio:
+
+  zint\frontend_qt\release\qtZint
+
+
+Visual Studio 2019 and 2017
+---------------------------
+
+Solutions for Visual Studio 2019 and 2017 are in sub-directories vs2019 and
+vs2017. The steps are the same as for Visual Studio 2022.
+
+
+Visual Studio 2015
+------------------
+
+A solution for Visual Studio 2015 is in sub-directory vs2015. The steps are
+almost the same as for Visual Studio 2022, except that "rc.exe" may not be
+available. If so, you need to install a Windows Kit and then update your PATH,
+e.g. (adjust for version):
+
+  set "PATH=C:\Program Files (x86)\Windows Kits\10\bin\10.0.20348.0\x86;%PATH%"
+
+Recent versions of Qt no longer supply a specific component for Visual Studio
+2015 32-bit, but you can use "MSVC 2019 32-bit" instead as it's compatible.
+
+For information on building a standalone version of Zint Studio using Visual
+Studio 2015, see "frontend_qt\howto_build_qzint_using_msvs2015.txt"
+
+
+CMake and Visual Studio
+-----------------------
+
+Zint can also be built using CMake with Visual Studio 2022, 2019, 2017 or 2015.
+The following example uses Visual Studio 2019 to build for x86/Win32:
+
+As above, follow the steps to build zlib and lpng.
+
+CMake needs to be able to find zlib and lpng. One way to do this (requires
+Administrator privileges) is to create two sub-directories in
+"C:\Program Files (x86)" called "include" and "lib", and then copy
+
+  "zlib\zlib.h", "zlib\zconf.h", "lpng\png.h", "lpng\pngconf.h" and
+  "lpng\pnglibconf.h" into "include", and
+
+  "zlib\zlib.lib" and "lpng\libpng.lib" into "lib".
+
+This example uses Qt 5.15.2 and component "MSVC 2019 32-bit" so install them and
+add to path (your path may differ):
+
+  set "PATH=C:\Qt\5.15.2\msvc2019\bin;%PATH%"
+
+Now build zint:
+
+  cd zint
+  cmake -G "Visual Studio 16 2019" -A Win32 -DCMAKE_BUILD_TYPE=Release -B build
+  cmake --build build --config Release
+  cd ..
+
+You should be able to run zint CLI and Zint Studio:
+
+  set "PATH=%cd%\zint\build\backend\Release;%PATH%"
+  zint\build\frontend\Release\zint.exe
+  zint\build\frontend_qt\Release\zint-qt.exe
+
+Note that the program name for Zint Studio when built using CMake is not
+"qtZint.exe" but "zint-qt.exe".
+
+For MSVC 2015 32-bit, MSVC 2017 32-bit and MSVC 2022 32-bit, the zint cmake
+equivalents are:
+
+  cmake -G "Visual Studio 14 2015" -DCMAKE_BUILD_TYPE=Release -B build
+  cmake -G "Visual Studio 15 2017" -DCMAKE_BUILD_TYPE=Release -B build
+  cmake -G "Visual Studio 17 2022" -A Win32 -DCMAKE_BUILD_TYPE=Release -B build
+
+
+Visual C++ 6
+------------
+
+The zint library and command line tool can be built using VC6.
+
+See "win32\zint_cmdline_vc6\readme.txt"
+
+
+MinGW/MSYS
+----------
+
+If not already installed, download and run the MinGW Installation Manager setup
+(https://osdn.net/projects/mingw/downloads/68260/mingw-get-setup.exe/) and
+using it install the packages:
+
+  mingw-developer-toolkit-bin
+  mingw32-base-bin
+  mingw32-gcc-g++-bin
+  msys-base-bin
+
+(This should include mingw32-libz-dll)
+
+Any reasonably modern version of Qt can be used. The following uses Qt 5.15.2.
+Using the Qt Maintenance Tool (see the Visual Studio 2022 instructions above)
+install the "MinGW 8.1.0 32-bit" component.
+
+(Note the Qt MinGW versions actually refer to Mingw-w64, the 64-bit fork of
+MinGW, but versions up to 8.1.0 at least are compatible.)
+
+Open a MinGW/MSYS shell by clicking/running e.g. (your path may differ)
+
+  C:\MinGW\msys\1.0\msys.bat
+
+As above make sure git and cmake are in your PATH.
+
+Add the Qt MinGW 8.1.0 32-bit component to your PATH, e.g. (your path may
+differ):
+
+  export PATH="/c/Qt/5.15.2/mingw81_32/bin":${PATH}
+
+Go into the directory you want to use and clone zint and libpng:
+
+  cd <project-directory>
+
+  git clone https://git.code.sf.net/p/zint/code zint
+  git clone https://git.code.sf.net/p/libpng/code lpng
+
+To compile lpng on MSYS, a bit of fiddling is needed. Go to the directory:
+
+  cd lpng
+
+On Windows git usually converts UNIX line endings to DOS ones. Undo this:
+
+  dos2unix * scripts/*
+
+Attempt to do the usual GNU make:
+
+  ./configure
+  make
+
+This will fail with a syntax error. To fix:
+
+  sed -i 's/\r//' pnglibconf.h
+
+(ignore "preserving permissions" warning if any)
+
+And then do the make again:
+
+  make
+  make install
+
+  cd ..
+
+The lpng includes should be in "/usr/local/include". Tell gcc to search there by
+setting C_INCLUDE_PATH:
+
+  export C_INCLUDE_PATH=/usr/local/include
+
+Now we should be able to build zint normally, except for telling cmake to
+generate MSYS compatible makefiles:
+
+  cd zint
+
+  mkdir build
+  cd build
+  cmake -G "MSYS Makefiles" ..
+  make
+
+  cd ../..
+
+This creates:
+
+zint/build/backend/libzint.dll
+zint/build/frontend/zint.exe
+zint/build/backend_qt/libQZint.lib
+zint/build/frontend_qt/zint-qt.exe
+
+The Zint command line tool "zint.exe" and Zint Studio "zint-qt.exe" need
+"libzint.dll" to run so add its location to your PATH:
+
+  export PATH="$(pwd)/zint/build/backend":${PATH}
+
+You should now be able to run the command line tool:
+
+  zint/build/frontend/zint
+
+And Zint Studio:
+
+  zint/build/frontend_qt/zint-qt