CMake: Make configure less verbose by default

Only show the more verbose configure output when configuring
with -developer-build (which matches --log-level=STATUS)

Otherwise in a non-developer build, restrict the output
to NOTICE+ message (includes WARNINGs and ERRORs).

Developers can still pass a custom log level when configuring.
For example -DCMAKE_MESSAGE_LOG_LEVEL=STATUS or
--log-level=STATUS.
The former method will be cached, while the latter is only applied
to the current configure invocation.

Also show the build instructions hint message only when configuring
for the first time.

[ChangeLog][CMake][configure] The configure output verbosity of
non developer-builds of Qt is now reduced by default. Pass
"-- --log-level=STATUS" to configure to make it verbose again.

Pick-to: 6.2 6.3
Change-Id: I7583a9c92142e0b1d7c5411b06403f40d8ebaf20
Reviewed-by: Alexey Edelev <alexey.edelev@qt.io>

0 files changed, 0 insertions, 0 deletions