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|
dnl @synopsis VL_LIB_READLINE
dnl
dnl Searches for a readline compatible library. If found, defines
dnl `HAVE_LIBREADLINE'. If the found library has the `add_history'
dnl function, sets also `HAVE_READLINE_HISTORY'. Also checks for the
dnl locations of the necessary include files and sets `HAVE_READLINE_H'
dnl or `HAVE_READLINE_READLINE_H' and `HAVE_READLINE_HISTORY_H' or
dnl 'HAVE_HISTORY_H' if the corresponding include files exists.
dnl
dnl The libraries that may be readline compatible are `libedit',
dnl `libeditline' and `libreadline'. Sometimes we need to link a termcap
dnl library for readline to work, this macro tests these cases too by
dnl trying to link with `libtermcap', `libcurses', `libncurses' or
dnl `libtinfo' before giving up.
dnl
dnl Here is an example of how to use the information provided by this
dnl macro to perform the necessary includes or declarations in a C file:
dnl
dnl #ifdef HAVE_LIBREADLINE
dnl # if defined(HAVE_READLINE_READLINE_H)
dnl # include <readline/readline.h>
dnl # elif defined(HAVE_READLINE_H)
dnl # include <readline.h>
dnl # else /* !defined(HAVE_READLINE_H) */
dnl extern char *readline ();
dnl # endif /* !defined(HAVE_READLINE_H) */
dnl char *cmdline = NULL;
dnl #else /* !defined(HAVE_READLINE_READLINE_H) */
dnl /* no readline */
dnl #endif /* HAVE_LIBREADLINE */
dnl
dnl #ifdef HAVE_READLINE_HISTORY
dnl # if defined(HAVE_READLINE_HISTORY_H)
dnl # include <readline/history.h>
dnl # elif defined(HAVE_HISTORY_H)
dnl # include <history.h>
dnl # else /* !defined(HAVE_HISTORY_H) */
dnl extern void add_history ();
dnl extern int write_history ();
dnl extern int read_history ();
dnl # endif /* defined(HAVE_READLINE_HISTORY_H) */
dnl /* no history */
dnl #endif /* HAVE_READLINE_HISTORY */
dnl
dnl
dnl @version 1.1
dnl @author Ville Laurikari <vl@iki.fi>
dnl @author Ville Voipio <vv@iki.fi>; check for readline completion (not available in, e.g. Leopard)
AC_DEFUN([VL_LIB_READLINE], [
AC_ARG_WITH([readline],
[AS_HELP_STRING([--without-readline],
[support command completion/history])])
AS_IF([test "x$with_readline" = "xno"], [
vl_cv_lib_readline=no
])
AC_CACHE_CHECK([for a readline compatible library],
vl_cv_lib_readline, [
ORIG_LIBS="$LIBS"
for readline_lib in readline edit editline; do
for termcap_lib in "" termcap curses ncurses tinfo; do
if test -z "$termcap_lib"; then
TRY_LIB="-l$readline_lib"
else
TRY_LIB="-l$readline_lib -l$termcap_lib"
fi
LIBS="$ORIG_LIBS $TRY_LIB"
AC_TRY_LINK_FUNC(readline, vl_cv_lib_readline="$TRY_LIB")
if test -n "$vl_cv_lib_readline"; then
break
fi
done
if test -n "$vl_cv_lib_readline"; then
break
fi
done
if test -z "$vl_cv_lib_readline"; then
vl_cv_lib_readline="no"
LIBS="$ORIG_LIBS"
fi
])
if test "$vl_cv_lib_readline" != "no"; then
AC_DEFINE(HAVE_LIBREADLINE, 1,
[Define if you have a readline compatible library])
AC_CHECK_HEADERS(readline.h readline/readline.h)
AC_CACHE_CHECK([whether readline supports history],
vl_cv_lib_readline_history,
[vl_cv_lib_readline_history="no"
AC_TRY_LINK_FUNC(add_history, vl_cv_lib_readline_history="yes")])
if test "$vl_cv_lib_readline_history" = "yes"; then
AC_DEFINE(HAVE_READLINE_HISTORY, 1, [Define if your readline library has \`add_history'])
AC_CHECK_HEADERS(history.h readline/history.h)
fi
AC_CACHE_CHECK([whether readline supports completion],
vl_cv_lib_readline_completion,
[vl_cv_lib_readline_completion="no"
AC_TRY_LINK_FUNC(rl_completion_matches, vl_cv_lib_readline_completion="yes")])
if test "$vl_cv_lib_readline_completion" = "yes"; then
AC_DEFINE(HAVE_READLINE_COMPLETION, 1, [Define if your readline library has \`rl_completion_matches'])
fi
elif test "$with_readline$vl_cv_lib_readline" = "yesno" ; then
AC_ERROR([readline support requested, but none found])
fi
])dnl
# ACI_PROG_SED
# ------------
# Check for a fully functional sed program that truncates
# as few characters as possible. Prefer GNU sed if found.
#
# Copyright (C) Free Software Foundation
#
# Copied here from autoconf-2.60 programs.m4 (AC_PROG_SED) to maintain
# compatibility with autoconf-2.59. Can be removed from acinclude.m4 if
# autoconf-2.60 or newer is required for other reasons..
#
m4_ifndef([AC_PROG_SED],[dnl
AC_DEFUN([AC_PROG_SED],
[AC_CACHE_CHECK([for a sed that does not truncate output], ac_cv_path_SED,
[dnl ac_script should not contain more than 99 commands (for HP-UX sed),
dnl but more than about 7000 bytes, to catch a limit in Solaris 8 /usr/ucb/sed.
ac_script=s/aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa/bbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbb/
for ac_i in 1 2 3 4 5 6 7; do
ac_script="$ac_script$as_nl$ac_script"
done
echo "$ac_script" | sed 99q >conftest.sed
$as_unset ac_script || ac_script=
_AC_PATH_PROG_FEATURE_CHECK(SED, [sed gsed],
[_AC_FEATURE_CHECK_LENGTH([ac_path_SED], [ac_cv_path_SED],
["$ac_path_SED" -f conftest.sed])])])
SED="$ac_cv_path_SED"
AC_SUBST([SED])dnl
rm -f conftest.sed
])# ACI_PROG_SED
])dnl
dnl AS_VAR_PREPEND
dnl -------------
dnl
dnl this isn't in autoconf (yet?)
dnl
m4_ifndef([AS_VAR_PREPEND],[dnl
AC_DEFUN([AS_VAR_PREPEND], [$1=$2${$1}])
])dnl
dnl m4_ifnblank
dnl -----------
dnl
dnl this was added in autoconf-2.64+
dnl
m4_ifndef([m4_ifnblank],[dnl
m4_define([m4_ifnblank], [m4_ifval(m4_normalize([$1]), [$2], [$3])])
])dnl
dnl LT_INIT
dnl -------
dnl
dnl this was added in libtool-2
dnl
m4_ifndef([LT_INIT],[dnl
m4_define([LT_INIT],[AC_PROG_LIBTOOL])
])dnl
|
