OpenSUSE: (sudo zypper install) libopenssl-devel libplist-devel avahi-compat-mDNSResponder-devel (+ libX11-devel for ZOOMFIX). The required GStreamer packages (you may need to use versions from Packman) are: gstreamer-devel gstreamer-plugins-base-devel gstreamer-plugins-libav gstreamer-plugins-bad (+ gstreamer-plugins-vaapi for Intel graphics).
FreeBSD: (sudo pkg install) libplist gstreamer1, gstreamer1-libav, gstreamer1-plugins, gstreamer1-plugins-* (* = core, good, bad, x, gtk, gl, vulkan, pulse …), (+ gstreamer1-vaapi for Intel graphics). Either avahi-libdns or mDNSResponder must also be installed to provide the dns_sd library. OpenSSL is already installed as a System Library. “ZOOMFIX” is untested; don’t try to use it on FreeBSD unless you need it.
If you need to do this, note that you may be able to use a newer version (OpenSSL-3.0.1 is known to work). You will need the standard development toolset (autoconf, automake, libtool, etc.). Download and compile the source code from https://www.openssl.org/source/, Install the downloaded openssl by opening a terminal in your Downloads directory, and unpacking the source distribution: (“tar -xvzf openssl-3.0.1.tar.gz ; cd openssl-3.0.1”). Then build/install with “./config ; make ; sudo make install_dev”. This will typically install the needed library libcrypto.*, either in /usr/local/lib or /usr/local/lib64. (Ignore the following for builds on MacOS:) Assuming the library was placed in /usr/local/lib64, you must “export OPENSSL_ROOT_DIR=/usr/local/lib64” before running cmake. On some systems like Debian or Ubuntu, you may also need to add a missing entry /usr/local/lib64 in /etc/ld.so.conf (or place a file containing “/usr/local/lib64/libcrypto.so” in /etc/ld.so.conf.d) before running “sudo ldconfig”.
If you need to do this, note that you may be able to use a newer version (OpenSSL-3.0.1 is known to work). You will need the standard development toolset (autoconf, automake, libtool, etc.). Download the source code from https://www.openssl.org/source/. Install the downloaded openssl by opening a terminal in your Downloads directory, and unpacking the source distribution: (“tar -xvzf openssl-3.0.1.tar.gz ; cd openssl-3.0.1”). Then build/install with “./config ; make ; sudo make install_dev”. This will typically install the needed library libcrypto.*, either in /usr/local/lib or /usr/local/lib64. (Ignore the following for builds on MacOS:) Assuming the library was placed in /usr/local/lib64, you must “export OPENSSL_ROOT_DIR=/usr/local/lib64” before running cmake. On some systems like Debian or Ubuntu, you may also need to add a missing entry /usr/local/lib64 in /etc/ld.so.conf (or place a file containing “/usr/local/lib64/libcrypto.so” in /etc/ld.so.conf.d) before running “sudo ldconfig”.
Note: on Debian 9 “Stretch” or Ubuntu 16.04 LTS editions, you can avoid this step by installing libplist-dev and libplist3 from Debian 10 or Ubuntu 18.04. (As well as the usual build tools, you may need to also install some libpython*-dev package). Download the latest source from https://github.com/libimobiledevice/libplist: get libplist-master.zip, then (“unzip libplist-master.zip ; cd libplist-master”), build/install (“./autogen.sh ; make ; sudo make install”). This will probably install libplist-2.0.* in /usr/local/lib. (Ignore the following for builds on MacOS:) On some systems like Debian or Ubuntu, you may also need to add a missing entry /usr/local/lib in /etc/ld.so.conf (or place a file containing “/usr/local/lib/libplist-2.0.so” in /etc/ld.so.conf.d) before running “sudo ldconfig”.