xdanmaku is a danmaku client for tuna/gdanmaku-server written in C, using libX11. It aims to be simple and able to run on any X11 based desktop environment.

xdanmaku [-fn font] [-s screen] <-u url> <-c channel> [-p passwd]
  url: danmaku server url <default: https://dm.tuna.moe:8443>
  channel: danmaku channel <default: demo>
  passwd: password for the channel <default: NULL>
  font: <default: Source Han Sans CN Medium:size=40>
  screen: <default all screens>

If you use Arch, you can use the AUR package xdanmaku.

To build yourself, you need to install the following dependencies:

• libxft
• libxinerama
• libcurl
• json-c
• libuuid

In Debian:

apt install libxft-dev libxinerama-dev libcurl4-openssl-dev libjson-c-dev uuid-dev