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