Make Windows install target slightly less breakable

CMakeLists.txt

@@ -501,31 +501,25 @@ IF(NOT WIN32 AND NOT APPLE)
 ENDIF(NOT WIN32 AND NOT APPLE)
 
 if(WIN32)
-    FILE(GLOB dll_files_debug "${OpenMW_BINARY_DIR}/Debug/*.dll")
-    FILE(GLOB dll_files_release "${OpenMW_BINARY_DIR}/Release/*.dll")
-    INSTALL(FILES ${dll_files_debug} DESTINATION "." CONFIGURATIONS Debug)
-    INSTALL(FILES ${dll_files_release} DESTINATION "." CONFIGURATIONS Release;RelWithDebInfo;MinSizeRel)
-    INSTALL(FILES "${OpenMW_BINARY_DIR}/Debug/openmw.cfg.install" DESTINATION "." RENAME "openmw.cfg" CONFIGURATIONS Debug)
-    INSTALL(FILES "${OpenMW_BINARY_DIR}/Release/openmw.cfg.install" DESTINATION "." RENAME "openmw.cfg" CONFIGURATIONS Release;RelWithDebInfo;MinSizeRel)
+    get_generator_is_multi_config(multi_config)
+    if (multi_config)
+        SET(INSTALL_SOURCE "${OpenMW_BINARY_DIR}/$<CONFIG>")
+    else ()
+        SET(INSTALL_SOURCE "${OpenMW_BINARY_DIR}")
+    endif ()
+    
+    INSTALL(DIRECTORY "${INSTALL_SOURCE}/" DESTINATION "." FILES_MATCHING PATTERN "*.dll")
+    INSTALL(FILES "${INSTALL_SOURCE}/openmw.cfg.install" DESTINATION "." RENAME "openmw.cfg")
     INSTALL(FILES "${OpenMW_SOURCE_DIR}/CHANGELOG.md" DESTINATION "." RENAME "CHANGELOG.txt")
     INSTALL(FILES "${OpenMW_SOURCE_DIR}/README.md" DESTINATION "." RENAME "README.txt")
     INSTALL(FILES "${OpenMW_SOURCE_DIR}/LICENSE" DESTINATION "." RENAME "LICENSE.txt")
-    INSTALL(FILES "${OpenMW_SOURCE_DIR}/files/mygui/DejaVuFontLicense.txt" DESTINATION ".")
-    INSTALL(FILES "${OpenMW_BINARY_DIR}/Debug/settings-default.cfg" DESTINATION "." CONFIGURATIONS Debug)
-    INSTALL(FILES "${OpenMW_BINARY_DIR}/Release/settings-default.cfg" DESTINATION "." CONFIGURATIONS Release;RelWithDebInfo;MinSizeRel)
-    INSTALL(FILES "${OpenMW_BINARY_DIR}/Debug/gamecontrollerdb.txt" DESTINATION "." CONFIGURATIONS Debug)
-    INSTALL(FILES "${OpenMW_BINARY_DIR}/Release/gamecontrollerdb.txt" DESTINATION "." CONFIGURATIONS Release;RelWithDebInfo;MinSizeRel)
-
-    INSTALL(DIRECTORY "${OpenMW_BINARY_DIR}/Debug/platforms" DESTINATION "." CONFIGURATIONS Debug)
-    INSTALL(DIRECTORY "${OpenMW_BINARY_DIR}/Release/platforms" DESTINATION "." CONFIGURATIONS Release;RelWithDebInfo;MinSizeRel)
-
-    INSTALL(DIRECTORY "${OpenMW_BINARY_DIR}/Debug/resources" DESTINATION "." CONFIGURATIONS Debug)
-    INSTALL(DIRECTORY "${OpenMW_BINARY_DIR}/Release/resources" DESTINATION "." CONFIGURATIONS Release;RelWithDebInfo;MinSizeRel)
-
-    FILE(GLOB plugin_dir_debug "${OpenMW_BINARY_DIR}/Debug/osgPlugins-*")
-    FILE(GLOB plugin_dir_release "${OpenMW_BINARY_DIR}/Release/osgPlugins-*")
-    INSTALL(DIRECTORY ${plugin_dir_debug} DESTINATION "." CONFIGURATIONS Debug)
-    INSTALL(DIRECTORY ${plugin_dir_release} DESTINATION "." CONFIGURATIONS Release;RelWithDebInfo;MinSizeRel)
+    INSTALL(FILES
+        "${OpenMW_SOURCE_DIR}/files/mygui/DejaVu Font License.txt"
+        DESTINATION ".")
+    INSTALL(FILES "${INSTALL_SOURCE}/settings-default.cfg" DESTINATION ".")
+    INSTALL(FILES "${INSTALL_SOURCE}/gamecontrollerdb.txt" DESTINATION ".")
+
+    INSTALL(DIRECTORY "${INSTALL_SOURCE}/resources" DESTINATION ".")
 
     SET(CPACK_GENERATOR "NSIS")
     SET(CPACK_PACKAGE_NAME "OpenMW")