libxext

X11 protocol extension library for display communication

brewmacoslinux

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X.Org: Library for common extensions to the X11 protocol

libxext

Check if libxext is installed and view its version$ pkg-config --modversion xext

Verify library installation by locating the shared object$ brew --prefix libxext && ls $(brew --prefix libxext)/lib

Check library dependencies and compilation flags$ pkg-config --cflags --libs xext