$NetBSD$
* don't install pkgsrc generated files
--- CMakeLists.txt.orig	2019-12-02 18:11:46.793667657 +0000
+++ CMakeLists.txt
@@ -45,8 +45,8 @@ add_library(Vulkan-Registry INTERFACE)
 target_include_directories(Vulkan-Registry INTERFACE "${CMAKE_CURRENT_SOURCE_DIR}/registry")
 add_library(Vulkan::Registry ALIAS Vulkan-Registry)
 
-install(DIRECTORY "${CMAKE_CURRENT_SOURCE_DIR}/include/vulkan" DESTINATION ${CMAKE_INSTALL_INCLUDEDIR})
-install(DIRECTORY "${CMAKE_CURRENT_SOURCE_DIR}/registry" DESTINATION ${CMAKE_INSTALL_DATADIR}/vulkan)
+install(DIRECTORY "${CMAKE_CURRENT_SOURCE_DIR}/include/vulkan" DESTINATION ${CMAKE_INSTALL_INCLUDEDIR} PATTERN "*.orig" EXCLUDE)
+install(DIRECTORY "${CMAKE_CURRENT_SOURCE_DIR}/registry" DESTINATION ${CMAKE_INSTALL_DATADIR}/vulkan PATTERN "*.orig" EXCLUDE)
 
 # uninstall target
 if(NOT TARGET uninstall)
