--- /dev/null
+--- poppler-20.10.0/qt5/tests/check_annotations.cpp.orig 2020-10-01 21:44:58.000000000 +0200
++++ poppler-20.10.0/qt5/tests/check_annotations.cpp 2020-10-31 18:19:05.431433716 +0100
+@@ -1,4 +1,5 @@
+ #include <cmath>
++#include <functional>
+ #include <memory>
+ #include <sstream>
+