Autoconf update.

aclocal.m4

@@ -114,6 +114,42 @@ AC_PREREQ([2.50])dnl
 am_aux_dir=`cd $ac_aux_dir && pwd`
 ])
 
+# AM_CONDITIONAL                                            -*- Autoconf -*-
+
+# Copyright (C) 1997, 2000, 2001, 2003, 2004, 2005, 2006, 2008
+# Free Software Foundation, Inc.
+#
+# This file is free software; the Free Software Foundation
+# gives unlimited permission to copy and/or distribute it,
+# with or without modifications, as long as this notice is preserved.
+
+# serial 9
+
+# AM_CONDITIONAL(NAME, SHELL-CONDITION)
+# -------------------------------------
+# Define a conditional.
+AC_DEFUN([AM_CONDITIONAL],
+[AC_PREREQ(2.52)dnl
+ ifelse([$1], [TRUE],  [AC_FATAL([$0: invalid condition: $1])],
+	[$1], [FALSE], [AC_FATAL([$0: invalid condition: $1])])dnl
+AC_SUBST([$1_TRUE])dnl
+AC_SUBST([$1_FALSE])dnl
+_AM_SUBST_NOTMAKE([$1_TRUE])dnl
+_AM_SUBST_NOTMAKE([$1_FALSE])dnl
+m4_define([_AM_COND_VALUE_$1], [$2])dnl
+if $2; then
+  $1_TRUE=
+  $1_FALSE='#'
+else
+  $1_TRUE='#'
+  $1_FALSE=
+fi
+AC_CONFIG_COMMANDS_PRE(
+[if test -z "${$1_TRUE}" && test -z "${$1_FALSE}"; then
+  AC_MSG_ERROR([[conditional "$1" was never defined.
+Usually this means the macro was only invoked conditionally.]])
+fi])])
+
 # Do all the work for Automake.                             -*- Autoconf -*-
 
 # Copyright (C) 1996, 1997, 1998, 1999, 2000, 2001, 2002, 2003, 2004,

configure

@@ -586,6 +586,8 @@ PACKAGE_URL=''
 
 ac_subst_vars='LTLIBOBJS
 LIBOBJS
+DOCUMENTATION_FALSE
+DOCUMENTATION_TRUE
 am__untar
 am__tar
 AMTAR
@@ -650,6 +652,7 @@ SHELL'
 ac_subst_files=''
 ac_user_opts='
 enable_option_checking
+enable_documentation
 '
       ac_precious_vars='build_alias
 host_alias
@@ -1264,6 +1267,13 @@ if test -n "$ac_init_help"; then
    esac
   cat <<\_ACEOF
 
+Optional Features:
+  --disable-option-checking  ignore unrecognized --enable/--with options
+  --disable-FEATURE       do not include FEATURE (same as --enable-FEATURE=no)
+  --enable-FEATURE[=ARG]  include FEATURE [ARG=yes]
+  --disable-documentation Omit building and installing the documentation.
+                          (default=no)
+
 Report bugs to <bug-parallel@gnu.org>.
 _ACEOF
 ac_status=$?
@@ -2203,6 +2213,23 @@ ac_config_headers="$ac_config_headers config.h"
 
 ac_config_files="$ac_config_files Makefile src/Makefile"
 
+
+# Check whether --enable-documentation was given.
+if test "${enable_documentation+set}" = set; then :
+  enableval=$enable_documentation;
+else
+  enable_documentation=yes
+fi
+
+ if test x$enable_documentation = xyes; then
+  DOCUMENTATION_TRUE=
+  DOCUMENTATION_FALSE='#'
+else
+  DOCUMENTATION_TRUE='#'
+  DOCUMENTATION_FALSE=
+fi
+
+
 cat >confcache <<\_ACEOF
 # This file is a shell script that caches the results of configure
 # tests run on this system so they can be shared between configure
@@ -2313,6 +2340,10 @@ LTLIBOBJS=$ac_ltlibobjs
 
 
 
+if test -z "${DOCUMENTATION_TRUE}" && test -z "${DOCUMENTATION_FALSE}"; then
+  as_fn_error $? "conditional \"DOCUMENTATION\" was never defined.
+Usually this means the macro was only invoked conditionally." "$LINENO" 5
+fi
 
 : "${CONFIG_STATUS=./config.status}"
 ac_write_fail=0