diff -ru gcal-4.1.orig/configure gcal-4.1/configure

--- gcal-4.1.orig/configure	2017-01-22 18:09:59.000000000 +0100

+++ gcal-4.1/configure	2023-01-31 14:35:28.553255306 +0100

@@ -8769,7 +8769,7 @@

 { $as_echo "$as_me:${as_lineno-$LINENO}: result: $ac_cv_lib_ncurses_initscr" >&5

 $as_echo "$ac_cv_lib_ncurses_initscr" >&6; }

 if test "x$ac_cv_lib_ncurses_initscr" = xyes; then :

-  TTYLIBS="-lncurses"

+  TTYLIBS="-lncurses -ltinfo"

 fi

   if test -z "$TTYLIBS"; then