meson: use not_found_message when dependencies are not found

The default state of `dependency()` is `required: true`, which means if
a dependency is not found, meson immediately aborts and does not log our
`error()` messages. meson 0.50 has builtin support for dependencies with
custom error messages.

The alternative would be to specify `required: false` everywhere, and
only then to key off of `dep.found()`.

Signed-off-by: Eli Schwartz <eschwartz@archlinux.org>
Signed-off-by: Allan McRae <allan@archlinux.org>

0 files changed, 0 insertions, 0 deletions