Remove wondrous VS version detection logic

Replace which_dotnet_version with a simple function that converts the
value of MSVC_VER to its corresponding enum value in the VS project
generator.
This reduces the maintenance burden when adding support for a new VS
version, because we do not need to update the registry keys in
which_dotnet_version anymore.
The which_dotnet_version function implemented the following logic:
  - find all installed VS versions via registry
  - select the "best matching one"
  - if there is no best match, select the VS that's in PATH
  - create a project for that VS installation
The usefulness of this whole stunt is questionable as the VS version of
Qt's mkspec must match the version of a project using that Qt anyway.

Change-Id: I9fb9a099ee5ddb5fc4c450be4f68f41f2b406b9a
Reviewed-by: Oswald Buddenhagen <oswald.buddenhagen@qt.io>
Reviewed-by: Oliver Wolff <oliver.wolff@qt.io>
Reviewed-by: Joerg Bornemann <joerg.bornemann@qt.io>

1 files changed, 2 insertions, 0 deletions

diff --git a/qmake/generators/win32/msvc_objectmodel.h b/qmake/generators/win32/msvc_objectmodel.h
index 94256f2103..64c6e9098d 100644
--- a/qmake/generators/win32/msvc_objectmodel.h
+++ b/qmake/generators/win32/msvc_objectmodel.h
@@ -54,6 +54,8 @@ enum DotNET {
     NET2015 = 0xd0
 };
 
+DotNET vsVersionFromString(const ProString &versionString);
+
 /*
     This Object model is of course VERY simplyfied,
     and does not actually follow the original MSVC