# Copyright (c) 2008, 2009 Nicira Networks.
#
-# Permission to use, copy, modify, and/or distribute this software for any
-# purpose with or without fee is hereby granted, provided that the above
-# copyright notice and this permission notice appear in all copies.
+# 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:
#
-# THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
-# WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
-# MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
-# ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
-# WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
-# ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
-# OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
+# 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 Checks for --disable-userspace.
AC_DEFUN([OVS_CHECK_USERSPACE],
[OVS_DEFINE([HAVE_NLA_NUL_STRING])])
OVS_GREP_IFELSE([$KSRC26/include/linux/err.h], [ERR_CAST],
[OVS_DEFINE([HAVE_ERR_CAST])])
+ OVS_GREP_IFELSE([$KSRC26/include/net/checksum.h], [csum_unfold],
+ [OVS_DEFINE([HAVE_CSUM_UNFOLD])])
+ OVS_GREP_IFELSE([$KSRC26/include/linux/skbuff.h], [skb_cow],
+ [OVS_DEFINE([HAVE_SKB_COW])])
OVS_CHECK_LOG2_H
OVS_CHECK_VETH
if cmp -s datapath/linux-2.6/kcompat.h.new \
[Define to 1 if net/if_packet.h is available.])
fi])
-dnl Checks for dpkg-buildpackage. If this is available then we check
-dnl that the Debian packaging is functional at "make distcheck" time.
-AC_DEFUN([OVS_CHECK_DPKG_BUILDPACKAGE],
- [AC_CHECK_PROG([HAVE_DPKG_BUILDPACKAGE], [dpkg-buildpackage], [yes], [no])
- AM_CONDITIONAL([HAVE_DPKG_BUILDPACKAGE],
- [test $HAVE_DPKG_BUILDPACKAGE = yes])])
+dnl Checks for buggy strtok_r.
+dnl
+dnl Some versions of glibc 2.7 has a bug in strtok_r when compiling
+dnl with optimization that can cause segfaults:
+dnl
+dnl http://sources.redhat.com/bugzilla/show_bug.cgi?id=5614.
+AC_DEFUN([OVS_CHECK_STRTOK_R],
+ [AC_CACHE_CHECK(
+ [whether strtok_r macro segfaults on some inputs],
+ [ovs_cv_strtok_r_bug],
+ [AC_RUN_IFELSE(
+ [AC_LANG_PROGRAM([#include <stdio.h>
+ #include <string.h>
+ ],
+ [[char string[] = ":::";
+ char *save_ptr = (char *) 0xc0ffee;
+ char *token1, *token2;
+ token1 = strtok_r(string, ":", &save_ptr);
+ token2 = strtok_r(NULL, ":", &save_ptr);
+ printf ("%s %s\n", token1, token2);
+ return 0;
+ ]])],
+ [ovs_cv_strtok_r_bug=no],
+ [ovs_cv_strtok_r_bug=yes],
+ [ovs_cv_strtok_r_bug=yes])])
+ if test $ovs_cv_strtok_r_bug = yes; then
+ AC_DEFINE([HAVE_STRTOK_R_BUG], [1],
+ [Define if strtok_r macro segfaults on some inputs])
+ fi
+])
dnl ----------------------------------------------------------------------
dnl These macros are from GNU PSPP, with the following original license: