VS: Add COMMON_LANGUAGE_RUNTIME support for "netcore"

Generate `CLRSupport` for Visual Studio projects.

Fixes: #22054

2 files changed, 12 insertions, 4 deletions

diff --git a/Source/cmGeneratorTarget.cxx b/Source/cmGeneratorTarget.cxx
index 321122a..8fd7321 100644
--- a/Source/cmGeneratorTarget.cxx
+++ b/Source/cmGeneratorTarget.cxx
@@ -8515,9 +8515,14 @@ cmGeneratorTarget::ManagedType cmGeneratorTarget::CheckManagedType(
   //                            lib
   // 2. empty propval:          add /clr as flag, mixed unmanaged/managed
   //                            target, has import lib
-  // 3. any value (safe,pure):  add /clr:[propval] as flag, target with
+  // 3. netcore propval:        add /clr:netcore as flag, mixed
+  //                            unmanaged/managed target, has import lib.
+  // 4. any value (safe,pure):  add /clr:[propval] as flag, target with
   //                            managed code only, no import lib
-  return propval.empty() ? ManagedType::Mixed : ManagedType::Managed;
+  if (propval.empty() || propval == "netcore") {
+    return ManagedType::Mixed;
+  }
+  return ManagedType::Managed;
 }
 
 cmGeneratorTarget::ManagedType cmGeneratorTarget::GetManagedType(
diff --git a/Source/cmVisualStudio10TargetGenerator.cxx b/Source/cmVisualStudio10TargetGenerator.cxx
index 4cfb561..c982713 100644
--- a/Source/cmVisualStudio10TargetGenerator.cxx
+++ b/Source/cmVisualStudio10TargetGenerator.cxx
@@ -3316,9 +3316,12 @@ bool cmVisualStudio10TargetGenerator::ComputeClOptions(
     }
   }
 
-  if (this->ProjectType != VsProjectType::csproj && clOptions.IsManaged()) {
+  if (this->ProjectType != VsProjectType::csproj &&
+      (clOptions.IsManaged() || clOptions.HasFlag("CLRSupport"))) {
     this->Managed = true;
-    std::string managedType = clOptions.GetFlag("CompileAsManaged");
+    std::string managedType = clOptions.HasFlag("CompileAsManaged")
+      ? clOptions.GetFlag("CompileAsManaged")
+      : "Mixed";
     if (managedType == "Safe" || managedType == "Pure") {
       // force empty calling convention if safe clr is used
       clOptions.AddFlag("CallingConvention", "");