Cristian Adam 45ec26783f CMakePM: Search after ninja also in system environment ...

CMakePM was setting the default generator to Ninja if the ninja
executable was set in the build environment.

This had the side effect of having to instantiate the build environment
for Visual C++, which meant running vcvars.bat files. This operation can
be costly if clink is also installed in the system.

This way the users that have ninja installed via choco, or manually set
it path, will not be affected by this delay.

Note that this only fixes the issue for the first start of Qt Creator
with new settings.

Some number from my machine:
- with clink 21s
- without clink 10s
- with this patchset 4s

Task-number: QTCREATORBUG-27906
Change-Id: I74d19b08211d93b3962a8877b49a58089310fbd6
Reviewed-by: Cristian Adam <cristian.adam@qt.io>

2022-10-14 08:11:51 +00:00

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