diff -rupN --no-dereference libwebp-1.3.1/CMakeLists.txt libwebp-1.3.1-new/CMakeLists.txt
--- libwebp-1.3.1/CMakeLists.txt	2023-06-30 13:58:57.280934048 +0200
+++ libwebp-1.3.1-new/CMakeLists.txt	2023-06-30 13:58:57.284933988 +0200
@@ -738,7 +738,7 @@ install(
   ARCHIVE DESTINATION ${CMAKE_INSTALL_LIBDIR}
   LIBRARY DESTINATION ${CMAKE_INSTALL_LIBDIR}
   RUNTIME DESTINATION ${CMAKE_INSTALL_BINDIR})
-set(ConfigPackageLocation ${CMAKE_INSTALL_DATADIR}/${PROJECT_NAME}/cmake/)
+set(ConfigPackageLocation ${CMAKE_INSTALL_LIBDIR}/cmake/${PROJECT_NAME}/)
 install(EXPORT ${PROJECT_NAME}Targets NAMESPACE ${PROJECT_NAME}::
         DESTINATION ${ConfigPackageLocation})