Use imported targets for libzip and zlib

cmake/modules/FindLibZip.cmake

@@ -33,4 +33,12 @@ find_package_handle_standard_args(LibZip
                                   REQUIRED_VARS LibZip_LIBRARIES LibZip_INCLUDE_DIR LibZip_INCLUDE_CONF_DIR
                                   VERSION_VAR LibZip_VERSION)
 
+if(LibZip_FOUND AND NOT TARGET LibZip::LibZip)
+    add_library(LibZip::LibZip UNKNOWN IMPORTED)
+    set_target_properties(LibZip::LibZip PROPERTIES
+        IMPORTED_LOCATION "${LibZip_LIBRARIES}"
+        INTERFACE_INCLUDE_DIRECTORIES "${LibZip_INCLUDE_DIRS}"
+    )
+endif()
+
 mark_as_advanced(LibZip_INCLUDE_DIR LibZip_INCLUDE_CONF_DIR)

plugins/libzipplugin/CMakeLists.txt

 include(CheckSymbolExists)
 
-include_directories(${LibZip_INCLUDE_DIRS})
-
 set(SUPPORTED_LIBZIP_MIMETYPES "application/zip;")
 
 set(INSTALLED_LIBZIP_PLUGINS "")
@@ -35,7 +33,7 @@ configure_file(
 
 kerfuffle_add_plugin(kerfuffle_libzip ${kerfuffle_libzip_SRCS})
 
-target_link_libraries(kerfuffle_libzip KF5::KIOCore ${LibZip_LIBRARIES} ${ZLIB_LIBRARIES})
+target_link_libraries(kerfuffle_libzip KF5::KIOCore LibZip::LibZip ZLIB::ZLIB)
 
 set(INSTALLED_LIBZIP_PLUGINS "${INSTALLED_LIBZIP_PLUGINS}kerfuffle_libzip;")