+
+AC_DEFUN([PSPP_CHECK_CLICKSEQUENCE],
+ [AC_REQUIRE([AM_INIT_AUTOMAKE]) # Defines MAKEINFO
+ AC_CACHE_CHECK([whether makeinfo supports @clicksequence],
+ [pspp_cv_have_clicksequence],
+ [cat > conftest.texi <<EOF
+@setfilename conftest.info
+@clicksequence{File @click{} Open}
+EOF
+ echo "configure:__oline__: running $MAKEINFO conftest.texi >&AS_MESSAGE_LOG_FD" >&AS_MESSAGE_LOG_FD
+ eval "$MAKEINFO conftest.texi >&AS_MESSAGE_LOG_FD 2>&1"
+ retval=$?
+ echo "configure:__oline__: \$? = $retval" >&AS_MESSAGE_LOG_FD
+ if test $retval = 0; then
+ pspp_cv_have_clicksequence=yes
+ else
+ pspp_cv_have_clicksequence=no
+ fi
+ rm -f conftest.texi conftest.info])
+ if test $pspp_cv_have_clicksequence = no; then
+ AM_MAKEINFOFLAGS="$AM_MAKEINFOFLAGS -DMISSING_CLICKSEQUENCE"
+ AC_SUBST([AM_MAKEINFOFLAGS])
+ fi])
+
+# The following comes from Open vSwitch:
+# ----------------------------------------------------------------------
+# Copyright (c) 2008, 2009, 2010, 2011 Nicira Networks.
+#
+# Licensed under the Apache License, Version 2.0 (the "License");
+# you may not use this file except in compliance with the License.
+# You may obtain a copy of the License at:
+#
+# http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
+
+dnl PSPP_ENABLE_WERROR
+AC_DEFUN([PSPP_ENABLE_WERROR],
+ [AC_ARG_ENABLE(
+ [Werror],
+ [AC_HELP_STRING([--enable-Werror], [Add -Werror to CFLAGS])],
+ [], [enable_Werror=no])
+ AC_CONFIG_COMMANDS_PRE(
+ [if test "X$enable_Werror" = Xyes; then
+ CFLAGS="$CFLAGS -Werror -Wno-error=deprecated-declarations"
+ fi])])
+