diff -ru xpdf-4.02.orig/cmake-config.txt xpdf-4.02/cmake-config.txt
--- xpdf-4.02.orig/cmake-config.txt	2019-09-25 21:54:33.000000000 +0200
+++ xpdf-4.02/cmake-config.txt	2020-07-03 18:17:21.191267235 +0200
@@ -188,61 +188,6 @@
 
 
 
-#--- look for Qt
-find_package(Qt5Widgets QUIET)
-if (Qt5Widgets_FOUND)
-  find_package(Qt5Network)
-  find_package(Qt5PrintSupport)
-else ()
-  find_package(Qt4 COMPONENTS QtCore QtGui QtNetwork REQUIRED)
-endif ()
-if(Qt5Widgets_FOUND)
-  message(STATUS "Qt5 found")
-  if (XPDFWIDGET_PRINTING)
-    set(QT_INCLUDES "${Qt5Widgets_INCLUDE_DIRS} ${Qt5Network_INCLUDE_DIRS} ${Qt5PrintSupport_INCLUDE_DIRS}")
-    set(QT_DEFINITIONS "${Qt5Widgets_DEFINITIONS} ${Qt5Network_DEFINITIONS} ${Qt5PrintSupport_DEFINITIONS}")
-    set(QT_LIBRARIES Qt5::Widgets Qt5::Network Qt5::PrintSupport)
-  else ()
-    set(QT_INCLUDES "${Qt5Widgets_INCLUDE_DIRS} ${Qt5Network_INCLUDE_DIRS}")
-    set(QT_DEFINITIONS "${Qt5Widgets_DEFINITIONS} ${Qt5Network_DEFINITIONS}")
-    set(QT_LIBRARIES Qt5::Widgets Qt5::Network)
-  endif ()
-  if (XPDFWIDGET_PRINTING)
-    if (APPLE)
-      set(EXTRA_QT_LIBRARIES "-framework ApplicationServices")
-    elseif (UNIX)
-      find_package(Cups)
-      if (CUPS_FOUND)
-        set(EXTRA_QT_LIBRARIES ${CUPS_LIBRARIES})
-      else ()
-        set (XPDFWIDGET_PRINTING OFF)
-      endif ()
-    else ()
-      set(EXTRA_QT_LIBRARIES "")
-    endif ()
-  endif ()
-  # remove "-fPIE" here because we added "-fPIC" above
-  string(REPLACE "-fPIE" "" QT_CFLAGS "${Qt5Widgets_EXECUTABLE_COMPILE_FLAGS}")
-elseif(QT4_FOUND)
-  message(STATUS "Qt4 found")
-  if (XPDFWIDGET_PRINTING)
-    if (APPLE)
-      set(EXTRA_QT_LIBRARIES "-framework ApplicationServices")
-    elseif (UNIX)
-      find_package(Cups)
-      if (CUPS_FOUND)
-        set(EXTRA_QT_LIBRARIES ${CUPS_LIBRARIES})
-      else ()
-        set (XPDFWIDGET_PRINTING OFF)
-      endif ()
-    else ()
-      set(EXTRA_QT_LIBRARIES "")
-    endif ()
-  endif ()
-else()
-  message(STATUS "No Qt library found")
-endif()
-
 #--- look for libpaper
 find_library(PAPER_LIBRARY
              NAMES paper libpaper
diff -ru xpdf-4.02.orig/CMakeLists.txt xpdf-4.02/CMakeLists.txt
--- xpdf-4.02.orig/CMakeLists.txt	2019-09-25 21:54:33.000000000 +0200
+++ xpdf-4.02/CMakeLists.txt	2020-07-03 18:16:19.639269162 +0200
@@ -28,10 +28,6 @@
   message(WARNING "Couldn't find libpng -- will not build pdftopng or pdftohtml.")
 endif ()
 
-if (NOT QT4_FOUND AND NOT Qt5Widgets_FOUND)
-  message(WARNING "Couldn't find Qt4 or Qt5 -- will not build xpdf.")
-endif ()
-
 if (NOT MULTITHREADED)
   message(WARNING "Multithreading is disabled -- will not build xpdf.")
 endif ()