# -*- autoconf -*-
-# Copyright (c) 2008, 2009, 2010, 2011, 2012 Nicira, Inc.
+# Copyright (c) 2008, 2009, 2010, 2011, 2012, 2013 Nicira, Inc.
#
# Licensed under the Apache License, Version 2.0 (the "License");
# you may not use this file except in compliance with the License.
AC_MSG_RESULT([$kversion])
if test "$version" -ge 3; then
- : # Linux 3.x
- elif test "$version" = 2 && test "$patchlevel" -ge 6; then
- : # Linux 2.6.x
+ if test "$version" = 3 && test "$patchlevel" -le 10; then
+ : # Linux 3.x
+ else
+ AC_ERROR([Linux kernel in $KBUILD is version $kversion, but version newer than 3.10.x is not supported])
+ fi
else
- if test "$KBUILD" = "$KSRC"; then
- AC_ERROR([Linux kernel in $KBUILD is version $kversion, but version 2.6 or later is required])
+ if test "$version" -le 1 || test "$patchlevel" -le 5 || test "$sublevel" -le 31; then
+ AC_ERROR([Linux kernel in $KBUILD is version $kversion, but version 2.6.32 or later is required])
else
- AC_ERROR([Linux kernel in build tree $KBUILD (source tree $KSRC) is version $kversion, but version 2.6 or later is required])
+ : # Linux 2.6.x
fi
fi
- if test ! -e "$KBUILD"/include/linux/version.h || \
+ if (test ! -e "$KBUILD"/include/linux/version.h && \
+ test ! -e "$KBUILD"/include/generated/uapi/linux/version.h)|| \
(test ! -e "$KBUILD"/include/linux/autoconf.h && \
test ! -e "$KBUILD"/include/generated/autoconf.h); then
AC_MSG_ERROR([Linux kernel source in $KBUILD is not configured])
OVS_GREP_IFELSE([$KSRC/include/linux/err.h], [ERR_CAST])
+ OVS_GREP_IFELSE([$KSRC/include/linux/etherdevice.h], [eth_hw_addr_random])
+
+ OVS_GREP_IFELSE([$KSRC/include/linux/if_vlan.h], [vlan_set_encap_proto])
+
OVS_GREP_IFELSE([$KSRC/include/linux/in.h], [ipv4_is_multicast])
OVS_GREP_IFELSE([$KSRC/include/linux/netdevice.h], [dev_disable_lro])
OVS_GREP_IFELSE([$KSRC/include/linux/netdevice.h], [dev_get_stats])
OVS_GREP_IFELSE([$KSRC/include/linux/netdevice.h], [dev_get_by_index_rcu])
+ OVS_GREP_IFELSE([$KSRC/include/linux/netdevice.h], [__skb_gso_segment])
+ OVS_GREP_IFELSE([$KSRC/include/linux/netdevice.h], [can_checksum_protocol])
OVS_GREP_IFELSE([$KSRC/include/linux/rcupdate.h], [rcu_read_lock_held], [],
[OVS_GREP_IFELSE([$KSRC/include/linux/rtnetlink.h],
# quoting rules.
OVS_GREP_IFELSE([$KSRC/include/linux/skbuff.h], [[[^@]]proto_data_valid],
[OVS_DEFINE([HAVE_PROTO_DATA_VALID])])
- OVS_GREP_IFELSE([$KSRC/include/linux/skbuff.h], [raw],
- [OVS_DEFINE([HAVE_MAC_RAW])])
OVS_GREP_IFELSE([$KSRC/include/linux/skbuff.h], [skb_dst(],
[OVS_DEFINE([HAVE_SKB_DST_ACCESSOR_FUNCS])])
OVS_GREP_IFELSE([$KSRC/include/linux/skbuff.h],
[OVS_DEFINE([HAVE_SKB_WARN_LRO])])
OVS_GREP_IFELSE([$KSRC/include/linux/skbuff.h], [consume_skb])
OVS_GREP_IFELSE([$KSRC/include/linux/skbuff.h], [skb_frag_page])
-
- OVS_GREP_IFELSE([$KSRC/include/linux/string.h], [kmemdup], [],
- [OVS_GREP_IFELSE([$KSRC/include/linux/slab.h], [kmemdup])])
+ OVS_GREP_IFELSE([$KSRC/include/linux/skbuff.h], [skb_reset_mac_len])
+ OVS_GREP_IFELSE([$KSRC/include/linux/skbuff.h], [skb_unclone])
OVS_GREP_IFELSE([$KSRC/include/linux/types.h], [bool],
[OVS_DEFINE([HAVE_BOOL_TYPE])])
OVS_GREP_IFELSE([$KSRC/include/linux/types.h], [__wsum],
[OVS_DEFINE([HAVE_CSUM_TYPES])])
+ OVS_GREP_IFELSE([$KSRC/include/uapi/linux/types.h], [__wsum],
+ [OVS_DEFINE([HAVE_CSUM_TYPES])])
OVS_GREP_IFELSE([$KSRC/include/net/checksum.h], [csum_replace4])
OVS_GREP_IFELSE([$KSRC/include/net/checksum.h], [csum_unfold])
- OVS_GREP_IFELSE([$KSRC/include/net/netlink.h], [NLA_NUL_STRING])
+ OVS_GREP_IFELSE([$KSRC/include/net/genetlink.h], [parallel_ops])
OVS_GREP_IFELSE([$KSRC/include/net/netlink.h], [nla_get_be16])
+ OVS_GREP_IFELSE([$KSRC/include/net/netlink.h], [nla_put_be16])
+ OVS_GREP_IFELSE([$KSRC/include/net/netlink.h], [nla_put_be32])
+ OVS_GREP_IFELSE([$KSRC/include/net/netlink.h], [nla_put_be64])
OVS_GREP_IFELSE([$KSRC/include/net/netlink.h], [nla_find_nested])
OVS_GREP_IFELSE([$KSRC/include/linux/if_vlan.h], [ADD_ALL_VLANS_CMD],
[OVS_DEFINE([HAVE_VLAN_BUG_WORKAROUND])])
+ OVS_GREP_IFELSE([$KSRC/include/linux/percpu.h], [this_cpu_ptr])
+
+ OVS_GREP_IFELSE([$KSRC/include/linux/openvswitch.h], [openvswitch_handle_frame_hook],
+ [OVS_DEFINE([HAVE_RHEL_OVS_HOOK])])
+
OVS_CHECK_LOG2_H
if cmp -s datapath/linux/kcompat.h.new \
[Define to 1 if net/if_packet.h is available.])
fi])
-dnl Checks for net/if_dl.h
+dnl Checks for net/if_dl.h.
+dnl
+dnl (We use this as a proxy for checking whether we're building on FreeBSD
+dnl or NetBSD.)
AC_DEFUN([OVS_CHECK_IF_DL],
[AC_CHECK_HEADER([net/if_dl.h],
[HAVE_IF_DL=yes],
if test "$HAVE_IF_DL" = yes; then
AC_DEFINE([HAVE_IF_DL], [1],
[Define to 1 if net/if_dl.h is available.])
+
+ # On these platforms we use libpcap to access network devices.
+ AC_SEARCH_LIBS([pcap_open_live], [pcap])
fi])
dnl Checks for buggy strtok_r.
dnl gives unlimited permission to copy and/or distribute it,
dnl with or without modifications, as long as this notice is preserved.
-dnl OVS_CHECK_CC_OPTION([OPTION], [ACTION-IF-ACCEPTED], [ACTION-IF-REJECTED])
-dnl Check whether the given C compiler OPTION is accepted.
-dnl If so, execute ACTION-IF-ACCEPTED, otherwise ACTION-IF-REJECTED.
-AC_DEFUN([OVS_CHECK_CC_OPTION],
-[
+AC_DEFUN([_OVS_CHECK_CC_OPTION], [dnl
m4_define([ovs_cv_name], [ovs_cv_[]m4_translit([$1], [-], [_])])dnl
AC_CACHE_CHECK([whether $CC accepts $1], [ovs_cv_name],
[ovs_save_CFLAGS="$CFLAGS"
- CFLAGS="$CFLAGS $1"
+ dnl Include -Werror in the compiler options, because without -Werror
+ dnl clang's GCC-compatible compiler driver does not return a failure
+ dnl exit status even though it complains about options it does not
+ dnl understand.
+ CFLAGS="$CFLAGS $WERROR $1"
AC_COMPILE_IFELSE([AC_LANG_PROGRAM(,)], [ovs_cv_name[]=yes], [ovs_cv_name[]=no])
CFLAGS="$ovs_save_CFLAGS"])
if test $ovs_cv_name = yes; then
fi
])
+dnl OVS_CHECK_WERROR
+dnl
+dnl Check whether the C compiler accepts -Werror.
+dnl Sets $WERROR to "-Werror", if so, and otherwise to the empty string.
+AC_DEFUN([OVS_CHECK_WERROR],
+ [WERROR=
+ _OVS_CHECK_CC_OPTION([-Werror], [WERROR=-Werror])])
+
+dnl OVS_CHECK_CC_OPTION([OPTION], [ACTION-IF-ACCEPTED], [ACTION-IF-REJECTED])
+dnl Check whether the given C compiler OPTION is accepted.
+dnl If so, execute ACTION-IF-ACCEPTED, otherwise ACTION-IF-REJECTED.
+AC_DEFUN([OVS_CHECK_CC_OPTION],
+ [AC_REQUIRE([OVS_CHECK_WERROR])
+ _OVS_CHECK_CC_OPTION([$1], [$2], [$3])])
+
dnl OVS_ENABLE_OPTION([OPTION])
dnl Check whether the given C compiler OPTION is accepted.
dnl If so, add it to WARNING_FLAGS.
AC_SUBST([SPARSEFLAGS])
AC_SUBST([CGCCFLAGS])])
+dnl OVS_SPARSE_EXTRA_INCLUDES
+dnl
+dnl The cgcc script from "sparse" does not search gcc's default
+dnl search path. Get the default search path from GCC and pass
+dnl them to sparse.
+AC_DEFUN([OVS_SPARSE_EXTRA_INCLUDES],
+ AC_SUBST([SPARSE_EXTRA_INCLUDES],
+ [`$CC -v -E - </dev/null 2>&1 >/dev/null | sed -n -e '/^#include.*search.*starts.*here:/,/^End.*of.*search.*list\./s/^ \(.*\)/-I \1/p' |grep -v /usr/lib | grep -x -v '\-I /usr/include' | tr \\\n ' ' `] ))
+
dnl OVS_ENABLE_SPARSE
AC_DEFUN([OVS_ENABLE_SPARSE],
[AC_REQUIRE([OVS_CHECK_SPARSE_TARGET])
AC_REQUIRE([OVS_CHECK_MAKE_IF])
+ AC_REQUIRE([OVS_SPARSE_EXTRA_INCLUDES])
: ${SPARSE=sparse}
AC_SUBST([SPARSE])
AC_CONFIG_COMMANDS_PRE(
[if test $ovs_cv_gnu_make_if = yes; then
- CC='$(if $(C),REAL_CC="'"$CC"'" CHECK="$(SPARSE) -I $(top_srcdir)/include/sparse $(SPARSEFLAGS)" cgcc $(CGCCFLAGS),'"$CC"')'
+ CC='$(if $(C),REAL_CC="'"$CC"'" CHECK="$(SPARSE) -I $(top_srcdir)/include/sparse $(SPARSEFLAGS) $(SPARSE_EXTRA_INCLUDES) " cgcc $(CGCCFLAGS),'"$CC"')'
fi])])
+
+dnl OVS_PTHREAD_SET_NAME
+dnl
+dnl This checks for three known variants of pthreads functions for setting
+dnl the name of the current thread:
+dnl
+dnl glibc: int pthread_setname_np(pthread_t, const char *name);
+dnl NetBSD: int pthread_setname_np(pthread_t, const char *format, void *arg);
+dnl FreeBSD: int pthread_set_name_np(pthread_t, const char *name);
+dnl
+dnl For glibc and FreeBSD, the arguments are just a thread and its name. For
+dnl NetBSD, 'format' is a printf() format string and 'arg' is an argument to
+dnl provide to it.
+dnl
+dnl This macro defines:
+dnl
+dnl glibc: HAVE_GLIBC_PTHREAD_SETNAME_NP
+dnl NetBSD: HAVE_NETBSD_PTHREAD_SETNAME_NP
+dnl FreeBSD: HAVE_PTHREAD_SET_NAME_NP
+AC_DEFUN([OVS_CHECK_PTHREAD_SET_NAME],
+ [AC_CHECK_FUNCS([pthread_set_name_np])
+ if test $ac_cv_func_pthread_set_name_np != yes; then
+ AC_CACHE_CHECK(
+ [for pthread_setname_np() variant],
+ [ovs_cv_pthread_setname_np],
+ [AC_LINK_IFELSE(
+ [AC_LANG_PROGRAM([#include <pthread.h>
+ ], [pthread_setname_np(pthread_self(), "name");])],
+ [ovs_cv_pthread_setname_np=glibc],
+ [AC_LINK_IFELSE(
+ [AC_LANG_PROGRAM([#include <pthread.h>
+], [pthread_setname_np(pthread_self(), "%s", "name");])],
+ [ovs_cv_pthread_setname_np=netbsd],
+ [ovs_cv_pthread_setname_np=none])])])
+ case $ovs_cv_pthread_setname_np in # (
+ glibc)
+ AC_DEFINE(
+ [HAVE_GLIBC_PTHREAD_SETNAME_NP], [1],
+ [Define to 1 if pthread_setname_np() is available and takes 2 parameters (like glibc).])
+ ;; # (
+ netbsd)
+ AC_DEFINE(
+ [HAVE_NETBSD_PTHREAD_SETNAME_NP], [1],
+ [Define to 1 if pthread_setname_np() is available and takes 3 parameters (like NetBSD).])
+ ;;
+ esac
+ fi])