Make it possible to build with BUILD_SHARED_LIBS (#792)
Make it possible to build with BUILD_SHARED_LIBS (#792)

Using BUILD_SHARED_LIBS forces all libraries to be built as shared
libraries. This can drastically reduce the time spent on linking
and thus iteration time.

Signed-off-by: Kévin Petit <9b79a2d3df4408bbf6fcf0c9904434a8637f93cf@arm.com>
google/clspv,google/clspv,google/clspv,google/clspv,google/clspv