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How to build with MSVC
======================
This is the recommended way of building openvpn-gui on Windows, which is also used when doing OpenVPN Windows releases.
Prerequisites
-------------
- Visual Studio 2019 (build tools should be enough, also 2022 will likely work)
- CMake
- vcpkg (add the environment variable ``VCPKG_ROOT`` which points to vcpkg installation)
Build steps
-----------
Run inside MSVC command prompt:
.. code-block::
c:\Temp\openvpn-gui>cmake -S . --preset x64-release-ossl3
c:\Temp\openvpn-gui>cmake --build --preset x64-release-ossl3
To see all presets, run:
.. code-block::
C:\Users\lev\Projects\openvpn-gui>cmake -S c:\Users\lev\Projects\openvpn-gui --list-presets
Available configure presets:
"x64-debug-ossl3"
"x64-debug-ossl1.1.1"
"arm64-debug-ossl3"
"arm64-debug-ossl1.1.1"
"x86-debug-ossl3"
"x86-debug-ossl1.1.1"
"x64-release-ossl3"
"x64-release-ossl1.1.1"
"arm64-release-ossl3"
"arm64-release-ossl1.1.1"
"x86-release-ossl3"
"x86-release-ossl1.1.1"
You could also open CMake project from MSVC IDE and build from there.
How to build using Cygwin
=========================
Cygwin provides ports of many GNU/Linux tools and a POSIX API layer. This is
the most complete way to get the GNU/Linux terminal feel under Windows.
Cygwin has a setup that helps you install all the tools you need.
This document describes how to build openvpn-gui using Cygwin. It cross-compiles
a native Windows executable, using the MinGW-w64 compilers that are available
as packages in the Cygwin repository.
Required packages
-----------------
To build openvpn-gui you need to have these packages installed, including
their dependencies. You can install these packages using the standard
``setup.exe`` of Cygwin.
- autoconf
- automake
- pkg-config
- make
- mingw64-x86_64-gcc-core
- mingw64-x86_64-openssl
Build
-----
To build use these commands:
.. code-block:: bash
autoreconf -iv
./configure --host=x86_64-w64-mingw32
make
32-bit or 64-bit
----------------
The above describes how to build the 64-bit version of openvpn-gui. If you
want to build the 32-bit version, simply replace ``x86_64`` with ``i686``.
Both 32-bit and 64-bit version of Cygwin can build the 32-bit and 64-bit
version of ``openvpn-gui.exe``. Just install the packages you need and use
the right ``--host`` option.
How to build using MSYS2
========================
One-time preperation
--------------------
Install MSYS2. Instructions and prerequisites can be found on the official website: https://msys2.github.io/
Once installed use the ``mingw64.exe`` provided by MSYS2.
Update the base MSYS2 system until no further updates are available using:
.. code-block:: bash
pacman -Syu
You may have to restart your MINGW64 prompt between those updates.
Now install the required development packages:
.. code-block:: bash
pacman -S base-devel mingw-w64-x86_64-{toolchain,openssl}
Build
-----
You can build using these commands:
.. code-block:: bash
autoreconf -iv
./configure
make
32-bit or 64-bit
----------------
The above describes how to build the 64-bit version of openvpn-gui.
If you want to build the 32-bit version, use the ``mingw32.exe`` and in the package names simply replace ``x86_64`` with ``i686``.
How to build using openvpn-build
================================
The `OpenVPN cross-compile buildsystem
<https://github.com/OpenVPN/openvpn-build>`_ builds OpenVPN GUI along all the
other OpenVPN dependencies. Instructions and automated scripts for setting up
the buildsystem are available on the
`Building OpenVPN using the generic buildsystem <https://community.openvpn.net/openvpn/wiki/BuildingUsingGenericBuildsystem>`_
page on the OpenVPN community Wiki.