xorgproto

X.Org protocol headers for X11 development

brewmacoslinux

Try with needOr install directly

About

X.Org: Protocol Headers

check installed X11 protocol headers$ ls $(brew --prefix xorgproto)/include/X11/extensions/

find X protocol header files on system$ find $(brew --prefix xorgproto) -name '*.h' -type f

view available protocol definitions$ cat $(brew --prefix xorgproto)/include/X11/Xproto.h

compile X11 application using these headers$ gcc myapp.c -I$(brew --prefix xorgproto)/include -o myapp

verify xorgproto installation path$ brew --prefix xorgproto