Adapted version of Eric Raymond's patches to automatically configure

curses and readline (for Linux, at least).

These are done as shared libraries by default, and so is bsddb -- that
seems to make the most sense.

Modules/Setup.config.in

 # This file is transmogrified into Setup.config by config.status.
 
 # The purpose of this file is to conditionally enable certain modules
-# based on configure-time options.  Currently thread support, garbage
-# collection support, and the BSD DB modules are the only modules so
-# enabled.
-
-@USE_THREAD_MODULE@thread threadmodule.c
+# based on configure-time options.
 
 # Garbage collection enabled with --with-cycle-gc
 @USE_GC_MODULE@gc gcmodule.c
 
-# You may want this to be built as a dynamically loaded module; uncomment
-# the following line in that case:
+# Threading
+@USE_THREAD_MODULE@thread threadmodule.c
+
+# You may want the following to be built as statically loaded modules;
+# comment out the *shared* line in that case:
+
+*shared*
+
+# Readline
+@USE_READLINE_MODULE@readline readline.c -lreadline -ltermcap
 
-#*shared*
+# The ncurses library, under Linux
+@USE_NCURSES_MODULE@_curses _cursesmodule.c -lncurses -ltermcap
 
 # bsddb module enabled by --with-libdb or presence of db.h
 @USE_BSDDB_MODULE@bsddb bsddbmodule.c @HAVE_LIBDB@

Modules/Setup.dist

@@ -120,6 +120,8 @@ GLHACK=-Dclear=__GLclear
 # and you may have to change -ltermcap to -ltermlib or perhaps remove
 # it, depending on your system -- see the GNU readline instructions.
 # It's okay for this to be a shared library, too.
+#
+# First, look at Setup.config; configure may have set this for you.
 
 #readline readline.c -lreadline -ltermcap
 
@@ -322,6 +324,8 @@ rotor rotormodule.c		# enigma-inspired encryption
 # provided by the ncurses library.  e.g. on Linux, link with -lncurses
 # instead of -lcurses; on SunOS 4.1.3, insert -I/usr/5include
 # -L/usr/5lib before -lcurses).
+#
+# First, look at Setup.config; configure may have set this for you.
 
 #_curses _cursesmodule.c -lcurses -ltermcap
 # Wrapper for the panel library that's part of ncurses and SYSV curses.

configure.in

@@ -734,6 +734,21 @@ AC_MSG_RESULT($withval)
 LIBS="$withval $LIBS"
 ], AC_MSG_RESULT(no))
 
+# This is used to generate Setup.config
+AC_SUBST(USE_NCURSES_MODULE)
+AC_CHECK_LIB(ncurses, initscr, 
+	[USE_NCURSES_MODULE=""],
+	[USE_NCURSES_MODULE="#"],
+	-ltermcap)
+
+# This is used to generate Setup.config
+AC_SUBST(USE_READLINE_MODULE)
+AC_CHECK_LIB(readline, readline, 
+	[USE_READLINE_MODULE=""],
+	[USE_READLINE_MODULE="#"], 
+	-ltermcap)
+
+# This is used to generate Setup.config
 AC_SUBST(USE_THREAD_MODULE)
 USE_THREAD_MODULE=""