VS: Add Visual Studio 16 2019 generator

Add this generator *without* support for specifying the target
architecture in the generator name.  cmake-gui will be taught
to provide a field for this, and command-line builds can use -A.

Also, teach this generator to select a default target architecture
based on the host architecture.

Fixes: #18689
Inspired-by: Egor Pugin <egor.pugin@gmail.com>

1 files changed, 11 insertions, 0 deletions

diff --git a/Source/cmGlobalVisualStudioGenerator.cxx b/Source/cmGlobalVisualStudioGenerator.cxx
index dc8de03..57510df 100644
--- a/Source/cmGlobalVisualStudioGenerator.cxx
+++ b/Source/cmGlobalVisualStudioGenerator.cxx
@@ -86,6 +86,8 @@ const char* cmGlobalVisualStudioGenerator::GetIDEVersion() const
       return "14.0";
     case cmGlobalVisualStudioGenerator::VS15:
       return "15.0";
+    case cmGlobalVisualStudioGenerator::VS16:
+      return "16.0";
   }
   return "";
 }
@@ -139,6 +141,15 @@ void cmGlobalVisualStudioGenerator::WriteSLNHeader(std::ostream& fout)
         fout << "# Visual Studio 15\n";
       }
       break;
+    case cmGlobalVisualStudioGenerator::VS16:
+      // Visual Studio 16 writes .sln format 12.00
+      fout << "Microsoft Visual Studio Solution File, Format Version 12.00\n";
+      if (this->ExpressEdition) {
+        fout << "# Visual Studio Express 16 for Windows Desktop\n";
+      } else {
+        fout << "# Visual Studio 16\n";
+      }
+      break;
   }
 }