+ The following instructions assume the LyX source code is in C:\LyX\lyx-23
+ You can also use another directory if you prefer.
+
+1 Install MSVC 2015
+
+ If you don't have Visual C++ 2015 installed, get the free Community edition
+ from https://www.visualstudio.com/. Make sure that the following two
+ features are selected for installation:
+ - "Visual C++" from "Programming languages" (only the first option
+ "Common Tools for Visual C++ 2015" is needed)
+ - "Tools and Windows SDKs" from "Windows 8.1 and Windows Phone 8.0/8.1 Tools"
+ The latter one requires Windows 8.1. If you use an older windows version
+ please install the "Windows Software Development Kit (SDK) für Windows 8.1"
+ from https://developer.microsoft.com/en-us/windows/downloads/windows-8-1-sdk.
+ This version requires at least Windows 7.
+ If the build complains later that it cannot find the file
+ C:\Microsoft.Cpp.Default.props then the SDK is not installed properly.
+
+2 Install Qt
+
+ Download the latest Qt for Open Source C++ development on Windows (VS2015)
+ from https://qt.io/download-open-source/
+ Qt 5.6.x is recommended, but 5.7.x or later versions should work as well.
+ If you want to build LyX as 32bit application, you need Qt x86.
+ If you want to build LyX as 64bit application, you need Qt x64.
+ Make sure that the bin subfolder of the Qt installation (e.g.
+ C:\Qt\Qt5.6.1\5.6\msvc2015\bin) is listed in the PATH environment variable.
+
+3 Install Python
+
+ Install the latest Python 2.x or 3.x version from
+ https://www.python.org/downloads/
+
+4 Install CMake
+
+ Install the latest CMake from http://www.cmake.org
+
+5 Configure
+
+ - Open the "Developer Command Prompt for VS2015" from the
+ "Visual Studio 2015\Visual Studio Tools" subfolder of the start menu.
+ Run the CMake GUI from the command window that was opened.
+ Alternatively, you can create a .bat file that first contains the line
+ call "C:\Program Files (x86)\Microsoft Visual Studio 14.0\VC\vcvarsall.bat" x86
+ and then calls the CMake GUI and use this .bat file to start CMake.
+ This is for building a 32bit LyX, if you want to build a 64bit LyX replace
+ 'x86' by 'amd64'.
+ The MSVC 2015 command prompt or vcvarsall.bat set some environment
+ variables that are needed for CMake to find the compiler.
+
+ - Set the source code path to C:\LyX\lyx-23
+ Set the build path to C:\LyX\lyx-23-build
+ Click Configure and set the generator to "Visual Studio 14 2015" to
+ build a 32bit LyX or "Visual Studio 14 2015 Win64" to build a 64bit LyX.
+
+ - Set LYX_USE_QT to QT5 and click Configure.
+
+ - Enable LYX_DEPENDENCIES_DOWNLOAD and click Configure.
+ Pre-compiled dependencies will automatically be downloaded.
+ If you installed the dependencies manually, set GNUWIN32_DIR instead
+ to the folder that contains the dependencies and click Configure.
+
+ - Enable the LYX_INSTALL option and click Configure.
+
+ - Click Generate.
+
+6 Compile
+
+ A Microsoft Visual C++ solution should have been generated at
+ C:\LyX\lyx-23-build\lyx.sln
+ Compile the INSTALL project to get a LyX installation in
+ C:\LyX\lyx-23-build\LYX_INSTALLED.
+
+7 Copy dependencies
+
+ Copy
+ - C:\LyX\lyx-23-build\msvc2015-deps\lyx-windows-deps-msvc2015\bin
+ - C:\LyX\lyx-23-build\msvc2015-deps\lyx-windows-deps-msvc2015\imagemagick
+ - C:\LyX\lyx-23-build\msvc2015-deps\lyx-windows-deps-msvc2015\Python
+ - C:\LyX\lyx-23-build\msvc2015-deps\lyx-windows-deps-msvc2015\ghostscript
+ - C:\LyX\lyx-23-build\msvc2015-deps\lyx-windows-deps-msvc2015\Resources
+ to C:\LyX\lyx-23-build\LYX_INSTALLED
+
+ And copy from the Qt bin directory (see item 2 "Install Qt" above)
+ Qt5Core.dll
+ Qt5Gui.dll
+ Qt5Svg.dll
+ Qt5Widgets.dll
+ Qt5WinExtras.dll
+ Qt5Cored.dll (if compiling Debug version)
+ Qt5Guid.dll (if compiling Debug version)
+ Qt5Svgd.dll (if compiling Debug version)
+ Qt5Widgetsd.dll (if compiling Debug version)
+ Qt5WinExtrasd.dll (if compiling Debug version)
+ to C:\LyX\lyx-23-build\LYX_INSTALLED\bin
+
+8 Define path prefix
+
+ Add the following line to C:\LyX\lyx-23-build\LYX_INSTALLED\Resources\lyxrc.dist,
+ so LyX will find the bundled tools such as Python, ImageMagick
+ and Ghostscript:
+
+ \path_prefix "$LyXDir\bin;$LyXDir\Python;$LyXDir\imagemagick;$LyXDir\ghostscript"
+
+ You may also add the location of your LaTeX installation if it's not on the
+ system PATH, and the location of JabRef.
+
+9 Start LyX
+
+ C:\LyX\lyx-23-build\LYX_INSTALLED\bin\lyx.exe
+