[webkit-gtk] Failed to compile WebKitGTK 2.36.3

[Lothar Scholz]

Compilation stops at 93% with the error

make[2]: *** No rule to make target
'/unstable/pointer-constraints/pointer-constraints-unstable-v1.xml',
needed by 'WebKit2Gtk/DerivedSources/pointer-constraints-unstable-v1-protocol.c'.
Stop.

GCC crashes before and pulled the whole terminal with it into hell,
but a second make run just continued smoothly.

When using ninja generator instead of make the missing target error is
shown immediately.