CMake: Use a setup function for CMakeBuildConfigurationFactory

The class itself is still used by IosCMakeBuildConfigurationFactory.

Change-Id: I9fd979fc8e24c9f032b35c1f3444c28d06f86d0a
Reviewed-by: <github-actions-qt-creator@cristianadam.eu>
Reviewed-by: Jarek Kobus <jaroslaw.kobus@qt.io>

src/plugins/cmakeprojectmanager/cmakebuildconfiguration.cpp

@@ -2254,5 +2254,11 @@ void ConfigureEnvironmentAspect::toMap(Store &map) const
     map.insert(USER_ENVIRONMENT_CHANGES_KEY, tmpMap.value(CHANGES_KEY).toStringList());
 }
 
+
+void setupCMakeBuildConfiguration()
+{
+    static CMakeBuildConfigurationFactory theCMakeBuildConfigurationFactory;
+}
+
 } // namespace Internal
 } // namespace CMakeProjectManager

src/plugins/cmakeprojectmanager/cmakebuildconfiguration.h

@@ -131,4 +131,6 @@ private:
     friend class Internal::CMakeProjectImporter;
 };
 
+namespace Internal { void setupCMakeBuildConfiguration(); }
+
 } // namespace CMakeProjectManager

src/plugins/cmakeprojectmanager/cmakeprojectplugin.cpp

@@ -52,7 +52,6 @@ public:
         Action::AlwaysEnabled/*handled manually*/
     };
 
-    CMakeBuildConfigurationFactory buildConfigFactory;
     CMakeInstallStepFactory installStepFactory;
     CMakeBuildTargetFilter cMakeBuildTargetFilter;
     CMakeOpenTargetFilter cMakeOpenTargetFilter;
@@ -75,6 +74,8 @@ class CMakeProjectPlugin final : public ExtensionSystem::IPlugin
         setupCMakeToolManager(this);
 
         setupCMakeSettingsPage();
+
+        setupCMakeBuildConfiguration();
         setupCMakeBuildStep();
 
         setupCMakeEditor();