$NetBSD$

CMAKE_DL_LIBS should include -ldl.

--- libraries/ZVulkan/CMakeLists.txt.orig	2023-04-02 07:15:09.000000000 +0000
+++ libraries/ZVulkan/CMakeLists.txt
@@ -177,7 +177,7 @@ if(WIN32)
 	add_definitions(-DUNICODE -D_UNICODE)
 else()
 	set(ZVULKAN_SOURCES ${ZVULKAN_SOURCES} ${ZVULKAN_UNIX_SOURCES})
-	set(ZVULKAN_LIBS ${CMAKE_DL_LIBS} -ldl)
+	set(ZVULKAN_LIBS ${CMAKE_DL_LIBS})
 	add_definitions(-DUNIX -D_UNIX)
 	add_link_options(-pthread)
 endif()