gnome shell build error

[Theodore Dimitriadis <liakoni gmail com>]

i tried to compile gnome shell today, but i got this error:

 CC     libgnome_shell_la-shell-global.lo
cc1: warnings being treated as errors
shell-global.c: In function ‘shell_global_create_pointer_barrier’:
shell-global.c:911:5: error: implicit declaration of function ‘XFixesCreatePointerBarrier’
shell-global.c: In function ‘shell_global_destroy_pointer_barrier’:
shell-global.c:937:3: error: implicit declaration of function ‘XFixesDestroyPointerBarrier’
shell-global.c:937:39: error: ‘PointerBarrier’ undeclared (first use in this function)
shell-global.c:937:39: note: each undeclared identifier is reported only once for each function it appears in
shell-global.c:937:54: error: expected ‘)’ before ‘barrier’
make[2]: *** [libgnome_shell_la-shell-global.lo] Error 1
make[2]: Leaving directory `/home/theodim/gnome-shell/source/gnome-shell/src'
make[1]: *** [install] Error 2
make[1]: Leaving directory `/home/theodim/gnome-shell/source/gnome-shell/src'
make: *** [install-recursive] Error 1
** Error during phase install of gnome-shell: ########## 

I tried again with jhbuild build -acf gnome-shell but i got the same result.

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