1 files changed, 10 insertions, 0 deletions
diff --git a/cmake/QtPrlHelpers.cmake b/cmake/QtPrlHelpers.cmake
index 7977afd030..932565f318 100644
--- a/cmake/QtPrlHelpers.cmake
+++ b/cmake/QtPrlHelpers.cmake
@@ -29,6 +29,16 @@ function(qt_internal_walk_libs target out_var dict_name operation)
         return()
     endif()
     list(APPEND collected ${target})
+
+    if(target STREQUAL "${QT_CMAKE_EXPORT_NAMESPACE}::Startup")
+        # We can't (and don't need to) process Startup, because it contains $<TARGET_PROPERTY:prop>
+        # genexes which get replaced with $<TARGET_PROPERTY:Startup,prop> genexes in the code below
+        # and that causes 'INTERFACE_LIBRARY targets may only have whitelisted properties.' errors
+        # with CMake versions equal to or lower than 3.18. These errors are super unintuitive to
+        # debug because there's no mention that it's happening during a file(GENERATE) call.
+        return()
+    endif()
+
     if(NOT TARGET ${dict_name})
         add_library(${dict_name} INTERFACE IMPORTED GLOBAL)
     endif()