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How to build with MSVC
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======================
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This is the recommended way of building openvpn-gui on Windows, which is also used when doing OpenVPN Windows releases.
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Prerequisites
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- Visual Studio 2022 (see below for details)
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- CMake
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- vcpkg (add the environment variable ``VCPKG_ROOT`` which points to vcpkg installation)
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Visual Studio Components
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------------------------
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Having the Build Tools is enough, you do not need the actual IDE.
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In addition to the Microsoft.VisualStudio.Workload.VCTools workload,
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you might also need the following additional components dependending
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on which architectures you build for:
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* Microsoft.VisualStudio.Component.VC.ATL.Spectre
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* Microsoft.VisualStudio.Component.VC.ATLMFC.Spectre
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* Microsoft.VisualStudio.Component.UWP.VC.ARM64
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* Microsoft.VisualStudio.Component.VC.Tools.ARM64
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* Microsoft.VisualStudio.Component.VC.ATL.ARM64.Spectre
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* Microsoft.VisualStudio.Component.VC.MFC.ARM64.Spectre
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* Microsoft.VisualStudio.Component.VC.Runtimes.ARM64.Spectre
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* Microsoft.VisualStudio.Component.VC.Runtimes.x86.x64.Spectre
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Build steps
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-----------
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Run inside MSVC command prompt:
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.. code-block::
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c:\Temp\openvpn-gui>cmake -S . --preset x64
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c:\Temp\openvpn-gui>cmake --build --preset x64-release
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To see all presets, run:
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.. code-block::
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C:\Users\lev\Projects\openvpn-gui>cmake -S c:\Users\lev\Projects\openvpn-gui --list-presets
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Available configure presets:
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"x64"
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"arm64"
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"x86"
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"x64-ovpn3"
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"arm64-ovpn3"
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"x86-ovpn3"
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You could also open CMake project from MSVC IDE and build from there.
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How to build using Cygwin
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=========================
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Cygwin provides ports of many GNU/Linux tools and a POSIX API layer. This is
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the most complete way to get the GNU/Linux terminal feel under Windows.
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Cygwin has a setup that helps you install all the tools you need.
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This document describes how to build openvpn-gui using Cygwin. It cross-compiles
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a native Windows executable, using the MinGW-w64 compilers that are available
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as packages in the Cygwin repository.
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Required packages
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-----------------
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To build openvpn-gui you need to have these packages installed, including
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their dependencies. You can install these packages using the standard
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``setup.exe`` of Cygwin.
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- autoconf
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- automake
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- pkg-config
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- make
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- mingw64-x86_64-gcc-core
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Build
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-----
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To build use these commands:
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.. code-block:: bash
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autoreconf -iv
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./configure --host=x86_64-w64-mingw32
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make
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32-bit or 64-bit
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----------------
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The above describes how to build the 64-bit version of openvpn-gui. If you
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want to build the 32-bit version, simply replace ``x86_64`` with ``i686``.
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Both 32-bit and 64-bit version of Cygwin can build the 32-bit and 64-bit
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version of ``openvpn-gui.exe``. Just install the packages you need and use
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the right ``--host`` option.
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How to build using MSYS2
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========================
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One-time preperation
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--------------------
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Install MSYS2. Instructions and prerequisites can be found on the official website: https://msys2.github.io/
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Once installed use the ``mingw64.exe`` provided by MSYS2.
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Update the base MSYS2 system until no further updates are available using:
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.. code-block:: bash
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pacman -Syu
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You may have to restart your MINGW64 prompt between those updates.
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Now install the required development packages:
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.. code-block:: bash
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pacman -S base-devel mingw-w64-x86_64-{toolchain}
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Build
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-----
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You can build using these commands:
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.. code-block:: bash
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autoreconf -iv
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./configure
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make
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32-bit or 64-bit
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----------------
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The above describes how to build the 64-bit version of openvpn-gui.
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If you want to build the 32-bit version, use the ``mingw32.exe`` and in the package names simply replace ``x86_64`` with ``i686``.
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