Provided by: libsdl3-doc_3.2.20+ds-2_all 

NAME
SDL_HINT_X11_XCB_LIBRARY - Specify the XCB library to load for the X11 driver.
SYNOPSIS
#include <SDL3/SDL_hints.h>
#define SDL_HINT_X11_XCB_LIBRARY "SDL_X11_XCB_LIBRARY"
DESCRIPTION
The default is platform-specific, often "libX11-xcb.so.1".
This hint should be set before initializing the video subsystem.
AVAILABILITY
This hint is available since SDL 3.2.0.
Simple Directmedia Layer SDL 3.2.20 SDL_HINT_X11_XCB_LIBRARY(3)