docs: Add OpenBSD initial documentation

source/docs/en/latest/developer/build-bsd.markdown

@@ -24,6 +24,7 @@ Dependency installation instructions are available for the following distributio
 
 - [FreeBSD](install-dependencies-freebsd.html)
 - [NetBSD](install-dependencies-netbsd.html)
+- [OpenBSD](install-dependencies-openbsd.html)
 
 ## Building HandBrake
 
@@ -33,8 +34,18 @@ Clone the HandBrake repository.
 
 Build HandBrake. To enable experimental support for Intel Quick Sync Video, append `--enable-qsv`. To build the command line interface only, disable the graphical interface by appending `--disable-gtk`.
 
+For FreeBSD
+
     ./configure --launch-jobs=$(sysctl -n hw.ncpu) --launch
 
+For NetBSD
+
+    ./configure --launch-jobs=$(sysctl -n hw.ncpuonline) --launch
+
+For OpenBSD
+
+    env AUTOCONF_VERSION=2.71 AUTOMAKE_VERSION=1.16 CC=cc ./configure --launch-jobs=$(sysctl -n hw.ncpuonline) --launch
+
 When complete, you will find `HandBrakeCLI` in the `build` directory. If the graphical interface is enabled, you will also find `ghb` in the `build/gtk/src` directory.
 
 Install HandBrake (optional). When installing the graphical interface, icon and desktop files for the Applications menu will be also installed.

source/docs/en/latest/developer/install-dependencies-openbsd.markdown

@@ -0,0 +1,88 @@
+---
+Type:            article
+Title:           Installing dependencies on OpenBSD
+Project:         HandBrake
+Project_URL:     https://handbrake.fr/
+Project_Version: Latest
+Language:        English
+Language_Code:   en
+Authors:         [ Brad Smith <brad@comstyle.com> (brad0) ]
+Copyright:       2022 HandBrake Team
+License:         Creative Commons Attribution-ShareAlike 4.0 International
+License_Abbr:    CC BY-SA 4.0
+License_URL:     https://handbrake.fr/docs/license.html
+---
+
+Installing dependencies on OpenBSD
+=================================
+
+The following instructions are for [OpenBSD](https://www.openbsd.org/) 7.1.
+
+Basic requirements to run commands:
+
+- sudo (for normal user accounts)
+
+Dependencies:
+
+- autoconf 2.71
+- automake 1.16.3
+- bash
+- bzip2
+- cmake
+- flac
+- fribidi
+- git
+- gmake
+- gpatch
+- gtar
+- harfbuzz
+- jansson
+- jpeg
+- lame
+- libass
+- libiconv
+- libogg
+- libsamplerate
+- libtheora
+- libtool
+- libvorbis
+- libvpx
+- libxml
+- m4
+- meson
+- nasm
+- ninja
+- opus
+- pkgconf
+- python3
+- speex
+- x264
+- xz
+
+Graphical interface dependencies:
+
+- atk
+- cairo
+- dbus
+- dbus-glib
+- desktop-file-utils
+- gdk-pixbuf
+- gettext-tools
+- glib2
+- gstreamer1-plugins-base
+- gstreamer1-plugins-libav
+- gtk+3
+- intltool
+- libnotify
+- libvpx
+- pango
+
+Install dependencies.
+
+    sudo pkg_add autoconf-2.71 automake-1.16.3 bash bzip2 cmake flac fribidi git gmake gpatch gtar-- harfbuzz jansson jpeg lame libass libiconv libogg libsamplerate libtheora libtool libvorbis libvpx libxml m4 meson nasm ninja opus pkgconf python3 speex x264 xz
+
+To build the GTK [GUI](abbr:Graphical User Interface), install the graphical interface dependencies.
+
+    sudo pkg_add atk cairo dbus dbus-glib desktop-file-utils gdk-pixbuf gettext-tools glib2 gstreamer1-plugins-base gstreamer1-plugins-libav gtk+3 intltool libnotify libvpx pango
+
+OpenBSD is now prepared to build HandBrake. See [Building HandBrake for BSD](build-bsd.html) for further instructions.