Added missing conan-official-osg-variables.cmake to openscenegraph-mr…

… package

Conan/Recipes/openscenegraph-mr/all/conan-official-osg-variables.cmake

@@ -0,0 +1,23 @@
+# Reproduce https://github.com/openscenegraph/OpenSceneGraph/blob/master/packaging/cmake/OpenSceneGraphConfig.cmake.in
+# Component-specific variables are not created. Use the component targets instead.
+
+# Only export these for the OpenSceneGraph config file, not FindOSG.cmake
+if(NOT DEFINED OSG_LIBRARIES)
+    set(OPENSCENEGRAPH_FOUND TRUE)
+    set(OPENSCENEGRAPH_LIBRARIES ${OpenSceneGraph_LIBRARIES})
+    set(OPENSCENEGRAPH_INCLUDE_DIR ${OpenSceneGraph_INCLUDE_DIRS})
+    set(OPENSCENEGRAPH_INCLUDE_DIRS ${OpenSceneGraph_INCLUDE_DIRS})
+
+    set(OPENSCENEGRAPH_VERSION ${OpenSceneGraph_VERSION})
+    set(OPENSCENEGRAPH_VERSION_STRING ${OpenSceneGraph_VERSION_STRING})
+
+    set(OSG_LIBRARY ${OpenSceneGraph_LIBRARIES})
+    set(OSG_LIBRARIES ${OpenSceneGraph_LIBRARIES})
+    set(OSG_INCLUDE_DIR ${OpenSceneGraph_INCLUDE_DIRS})
+    set(OSG_INCLUDE_DIRS ${OpenSceneGraph_INCLUDE_DIRS})
+endif()
+
+# Reproduce https://github.com/openscenegraph/OpenSceneGraph/blob/master/CMakeModules/FindOpenThreads.cmake
+set(OPENTHREADS_FOUND TRUE)
+set(OPENTHREADS_INCLUDE_DIR ${OpenSceneGraph_INCLUDE_DIRS})
+set(OPENTHREADS_LIBRARY OpenThreads::OpenThreads)