link to external minizip with full path

This let's cmake create config files that allow linking to minizip even when
in an unrelated prefix. This can happen with package managers that install
every package into their own prefix, such as [Spack](https://spack.io).

code/CMakeLists.txt

@@ -1380,7 +1380,12 @@ ENDIF()
 IF(NOT ASSIMP_HUNTER_ENABLED)
   if (UNZIP_FOUND)
     INCLUDE_DIRECTORIES(${UNZIP_INCLUDE_DIRS})
-    TARGET_LINK_LIBRARIES(assimp ${UNZIP_LIBRARIES})
+    # TODO if cmake required version has been updated to >3.12.0, collapse this to the second case only
+    if(${CMAKE_VERSION} VERSION_LESS "3.12.0")
+      TARGET_LINK_LIBRARIES(assimp ${UNZIP_LIBRARIES})
+    else()
+      TARGET_LINK_LIBRARIES(assimp ${UNZIP_LINK_LIBRARIES})
+    endif()
   else ()
     INCLUDE_DIRECTORIES("../")
   endif ()