https://bugs.gentoo.org/839285
--- a/m4/acinclude.m4
+++ b/m4/acinclude.m4
@@ -2095,9 +2071,6 @@ AC_DEFUN([OCTAVE_CHECK_QT_TOOL], [
   if test -z "$m4_toupper([$1])_QTVER"; then
     AC_CHECK_TOOLS(m4_toupper([$1]), [$1])
     if test -n "$m4_toupper([$1])"; then
-      if test -n "$QTCHOOSER"; then
-        m4_toupper([$1])FLAGS="-qt=$qt_version"
-      fi
       QT_TOOLS_AVAILABLE="$QT_TOOLS_AVAILABLE $1"
     else
       QT_TOOLS_MISSING="$QT_TOOLS_MISSING $1"
@@ -2167,8 +2167,6 @@ AC_DEFUN([OCTAVE_CHECK_QT_VERSION], [AC_MSG_CHECKING([Qt version $1])
   QT_TOOLS_MISSING=
 
   if test $build_qt_gui = yes; then
-    AC_CHECK_TOOLS(QTCHOOSER, [qtchooser])
-
     OCTAVE_CHECK_QT_TOOL([moc])
     OCTAVE_CHECK_QT_TOOL([uic])
     OCTAVE_CHECK_QT_TOOL([rcc])