# -*- autoconf -*-
# FILE: "/diska/home/joze/src/tclreadline/configure.in"
# LAST MODIFICATION: "Mon Aug 23 16:45:33 1999 (joze)"
# FILE: "/home/joze/src/tclreadline/configure.in"
# LAST MODIFICATION: "Mon Aug 23 21:54:31 1999 (joze)"
# (C) 1998, 1999 by Johannes Zellner, <johannes@zellner.org>
# $Id$
# ---
#
# tclreadline -- gnu readline for tcl
# Copyright (C) 1999  Johannes Zellner
#

  Use --with-readline-library to specify the directory
  containing libreadline$SHLIB_SUFFIX on your system.])
else
    AC_MSG_RESULT({READLINE_LIB_DIR}/libreadline${SHLIB_SUFFIX}${READLINE_VERSION_SUFFIX})
fi



#--------------------------------------------------------------------
#   Check for appropriate version of gnu readline
#   (older versions of gnu readline don't have
#    rl_callback_read_char ()).
#--------------------------------------------------------------------

save=$LIBS
LIBS="-L$READLINE_LIB_DIR -lreadline"
alternate=no
AC_CHECK_LIB(readline, rl_callback_read_char, alternate=yes, alternate=no)
if test "$alternate" = "no"; then
    AC_MSG_ERROR(alternate interface not supported by this readline version.)
fi


# ---
# check, if curses or termcap is already
# linked with libreadline. (on newer Linux
# systems it is.)
# ---

TERM_LIB=""
AC_CHECK_LIB(readline, tputs, termcaps=yes, termcaps=no)
if test "$termcaps" = "no"; then

    # ---
    # nope. tputs() is unresolved in libreadline, so
    # check if we want libcurses or libtermcap.
    # ---

    AC_CHECK_LIB($TERM_LIB, tputs, tputs_ok=yes, tputs_ok=no)
    if test "$tputs_ok" = "no"; then
        AC_MSG_ERROR(tputs() not found in lib$TERM_LIB.)
    else
        TERM_LIB=-l$TERM_LIB
    fi
fi
# ===========================================


#--------------------------------------------------------------------
#   Check for appropriate version of gnu readline
#   (older versions of gnu readline don't have
#    rl_callback_read_char ()).
#--------------------------------------------------------------------

save=$LIBS
LIBS="-L$READLINE_LIB_DIR -lreadline"
alternate=no
AC_CHECK_LIB(
    readline, rl_callback_read_char, alternate=yes, alternate=no, $TERM_LIB
)
if test "$alternate" = "no"; then
    AC_MSG_ERROR(alternate interface not supported by this readline version.)
fi


AC_MSG_CHECKING([for the readline version number])
AC_TRY_RUN([
#include <stdio.h>
int main () {
    FILE *fp = fopen ("conftestversion", "w");
    extern char *rl_library_version;