On machines where multiple versions of VS are installed, the VS version
for the vc(x)proj generator is selected by the entries in the PATH
variable. The first VS installation that's found in PATH is used.
The former logic printed a warning if multiple VS installations were in
PATH and also fell back to the lowest version if a VS version was
registered with multiple install paths.
That's the case for VC 2012 express and prevented its usage.
Task-number: QTBUG-34357
Change-Id: Ia5c66a1aea0c40e4b7460b3aa6c7daee6673da44
Reviewed-by: Oswald Buddenhagen <oswald.buddenhagen@digia.com>
Reviewed-by: Joerg Bornemann <joerg.bornemann@digia.com>