cogl fails to build on master and the 1.16 branch, possibly because the compiler can't resolve the two declarations of 'struct wl_resource *' as being the same:

In file included from ./winsys/cogl-winsys-egl.c:33:0:
./winsys/cogl-winsys-egl-private.h:167:33: warning: 'struct wl_resource' declared inside parameter list [enabled by default]
                                 int *value);
                                 ^
./winsys/cogl-winsys-egl.c:1047:1: error: conflicting types for '_cogl_egl_query_wayland_buffer'
 _cogl_egl_query_wayland_buffer (CoglContext *ctx,
 ^
In file included from ./winsys/cogl-winsys-egl.c:33:0:
./winsys/cogl-winsys-egl-private.h:164:1: note: previous declaration of '_cogl_egl_query_wayland_buffer' was here
 _cogl_egl_query_wayland_buffer (CoglContext *ctx,
 ^
./winsys/cogl-winsys-egl.c: In function '_cogl_egl_query_wayland_buffer':
./winsys/cogl-winsys-egl.c:1059:50: warning: passing argument 2 of 'egl_renderer->pf_eglQueryWaylandBuffer' from incompatible pointer type [enabled by default]
                                                  value);
                                                  ^
./winsys/cogl-winsys-egl.c:1059:50: note: expected 'struct wl_resource *' but argument is of type 'struct wl_resource *'
make[4]: *** [cogl-winsys-egl.lo] Error 1