Without this, it'd silently (well, with a small warning in configure) fall back
to no fancy tty stuff.
--- a/configure.ac
+++ b/configure.ac
@@ -319,6 +319,13 @@ if test "$gcal_cv_use_term" = yes; then
   AC_MSG_CHECKING(for working terminal libraries)
   SAVE_LIBS=$LIBS
   LIBS="$LIBS $TTYLIBS"
+
+  PKG_CHECK_MODULES([NCURSES], [ncurses], [
+    TTYLIBS=$NCURSES_LIBS
+    CPPFLAGS="$NCURSES_CFLAGS $CPPFLAGS"
+    AC_DEFINE([HAVE_TTYLIBS], [1], [Link -lncurses or -ltermcap or -ltermlib to executable.])
+    AC_MSG_RESULT(using $TTYLIBS)
+  ], [
   AC_TRY_LINK([#include <term.h>],
     [tgetent(0); tgetflag(0); tgetnum(0); tgetstr(0);],
     [gcal_ttylibs_ok=yes])
@@ -385,7 +392,7 @@ if test "$gcal_cv_use_term" = yes; then
     AC_MSG_WARN(note: $PACKAGE-$VERSION would work more flexible if libncurses.a)
     AC_MSG_WARN(libtermcap.a or libtermlib.a are installed.)
     AC_MSG_RESULT()
-  fi
+  fi])
 fi
 
 dnl
--- a/src/Makefile.am
+++ b/src/Makefile.am
@@ -22,7 +22,7 @@ MISC_LIBS = @LIBM@ @LIBS@
 LIBS = $(MISC_LIBS)
 
 AM_CFLAGS = -I$(top_srcdir)/lib -I$(srcdir) -I.. $(CPPFLAGS)
-LDADD = ../lib/libgnu.a $(LIBINTL)
+LDADD = ../lib/libgnu.a $(LIBINTL) $(TTYLIBS) $(NCURSES_LIBS)
 
 SRCS = \
   file-io.c \