--- poppler-21.01.0/glib/CMakeLists.txt

+++ poppler-21.01.0/glib/CMakeLists.txt

@@ -121,7 +121,7 @@ if (HAVE_INTROSPECTION AND BUILD_SHARED_

   # General gir: Reset object-list for introspection & load tool args

   set(INTROSPECTION_GIRS)

-  set(INTROSPECTION_SCANNER_ARGS "--add-include-path=${CMAKE_CURRENT_SOURCE_DIR}" "--warn-all")

+  set(INTROSPECTION_SCANNER_ARGS "--add-include-path=${CMAKE_CURRENT_SOURCE_DIR}" "--warn-all" "--sources-top-dirs=${CMAKE_SOURCE_DIR}" "--sources-top-dirs=${CMAKE_BINARY_DIR}")

   set(INTROSPECTION_COMPILER_ARGS "--includedir=${CMAKE_CURRENT_SOURCE_DIR}")

   # Poppler: Assign package to gir & export keys