-# readline.m4 serial 7
-dnl Copyright (C) 2005, 2006, 2009 Free Software Foundation, Inc.
+# readline.m4 serial 9
+dnl Copyright (C) 2005-2006, 2009-2011 Free Software Foundation, Inc.
dnl This file is free software; the Free Software Foundation
dnl gives unlimited permission to copy and/or distribute it,
dnl with or without modifications, as long as this notice is preserved.
AC_LINK_IFELSE([AC_LANG_PROGRAM([[#include <stdio.h>
#include <readline/readline.h>]],
[[readline((char*)0);]])],
- [gl_cv_lib_readline=" -l$extra_lib"])
+ [if test -n "$extra_lib"; then
+ gl_cv_lib_readline="yes, requires -l$extra_lib"
+ else
+ gl_cv_lib_readline="yes"
+ fi
+ ])
if test "$gl_cv_lib_readline" != no; then
break
fi
if test "$gl_cv_lib_readline" != no; then
AC_DEFINE([HAVE_READLINE], [1], [Define if you have the readline library.])
- if test "$gl_cv_lib_readline" != " -l"; then
- LIBREADLINE="$LIBREADLINE$gl_cv_lib_readline"
- LTLIBREADLINE="$LTLIBREADLINE$gl_cv_lib_readline"
+ extra_lib=`echo "$gl_cv_lib_readline" | sed -n -e 's/yes, requires //p'`
+ if test -n "$extra_lib"; then
+ LIBREADLINE="$LIBREADLINE $extra_lib"
+ LTLIBREADLINE="$LTLIBREADLINE $extra_lib"
fi
AC_MSG_CHECKING([how to link with libreadline])
AC_MSG_RESULT([$LIBREADLINE])
AC_SUBST([LIBREADLINE])
AC_SUBST([LTLIBREADLINE])
- AC_CHECK_HEADERS([readline/readline.h])
-
- if test $gl_cv_lib_readline = no; then
- AC_LIBOBJ([readline])
- gl_PREREQ_READLINE
- fi
+ AC_CHECK_HEADERS([readline/readline.h readline/history.h])
])
# Prerequisites of lib/readline.c.