m4/readline.m4

   1 dnl
   2 dnl Copyright (C) 2004 aMule Team (http://www.amule.org)
   3 dnl Copyright (C) 1995-2002 Free Software Foundation, Inc.
   4 dnl
   5 dnl This file is free software, distributed under the terms of the GNU
   6 dnl General Public License.  As a special exception to the GNU General
   7 dnl Public License, this file may be distributed as part of a program
   8 dnl that contains a configuration script generated by Autoconf, under
   9 dnl the same distribution terms as the rest of that program.
  10 dnl
  11 dnl Original file available from the GNU Autoconf Macro Archive at:
  12 dnl http://www.gnu.org/software/ac-archive/htmldoc/vl_lib_readline.html
  13 dnl
  14
  15 AC_DEFUN([VL_LIB_READLINE], [
  16   AC_CACHE_CHECK([for a readline compatible library],
  17                  vl_cv_lib_readline, [
  18     ORIG_LIBS="$LIBS"
  19     for readline_lib in readline edit editline; do
  20       for termcap_lib in "" termcap curses ncurses; do
  21         if test -z "$termcap_lib"; then
  22           TRY_LIB="-l$readline_lib"
  23         else
  24           TRY_LIB="-l$readline_lib -l$termcap_lib"
  25         fi
  26         LIBS="$ORIG_LIBS $TRY_LIB"
  27         AC_TRY_LINK_FUNC(readline, vl_cv_lib_readline="$TRY_LIB")
  28         if test -n "$vl_cv_lib_readline"; then
  29           break
  30         fi
  31       done
  32       if test -n "$vl_cv_lib_readline"; then
  33         break
  34       fi
  35     done
  36     if test -z "$vl_cv_lib_readline"; then
  37       vl_cv_lib_readline="no"
  38       LIBS="$ORIG_LIBS"
  39       READLINE_LIBS=""
  40     else
  41       READLINE_LIBS="$vl_cv_lib_readline"
  42     fi
  43   ])
  44
  45   if test "$vl_cv_lib_readline" != "no"; then
  46     AC_DEFINE(HAVE_LIBREADLINE, 1,
  47               [Define if you have a readline compatible library])
  48     AC_CHECK_HEADERS(readline.h readline/readline.h)
  49     AC_CACHE_CHECK([whether readline supports history],
  50                    vl_cv_lib_readline_history, [
  51       vl_cv_lib_readline_history="no"
  52       AC_TRY_LINK_FUNC(add_history, vl_cv_lib_readline_history="yes")
  53     ])
  54     if test "$vl_cv_lib_readline_history" = "yes"; then
  55       AC_DEFINE(HAVE_READLINE_HISTORY, 1,
  56                 [Define if your readline library has \`add_history'])
  57       AC_CHECK_HEADERS(history.h readline/history.h)
  58     fi
  59   fi
  60   AC_SUBST(READLINE_LIBS)
  61   LIBS="$ORIG_LIBS"
  62 ])dnl