X-Git-Url: http://git.onelab.eu/?a=blobdiff_plain;f=acinclude.m4;h=f1322fa0e125532556b8fc9e037d0becd5b3918e;hb=refs%2Fheads%2Forig-parallel;hp=2f38997ff0b85920cb8180d50e78c6207605de70;hpb=f1acd62b54376a425a975f9af501c4c8c5689b39;p=sliver-openvswitch.git diff --git a/acinclude.m4 b/acinclude.m4 index 2f38997ff..f1322fa0e 100644 --- a/acinclude.m4 +++ b/acinclude.m4 @@ -1,6 +1,6 @@ # -*- autoconf -*- -# Copyright (c) 2008, 2009 Nicira Networks. +# Copyright (c) 2008, 2009, 2010 Nicira Networks. # # Licensed under the Apache License, Version 2.0 (the "License"); # you may not use this file except in compliance with the License. @@ -14,41 +14,93 @@ # See the License for the specific language governing permissions and # limitations under the License. -dnl OVS_CHECK_LINUX(OPTION, VERSION, VARIABLE, CONDITIONAL) +dnl OVS_CHECK_LINUX26 dnl dnl Configure linux kernel source tree -AC_DEFUN([OVS_CHECK_LINUX], [ - AC_ARG_WITH([$1], - [AC_HELP_STRING([--with-$1=/path/to/linux-$2], - [Specify the linux $2 kernel sources])], - [path="$withval"], [path=])dnl - if test -n "$path"; then - path=`eval echo "$path"` - - AC_MSG_CHECKING([for $path directory]) - if test -d "$path"; then - AC_MSG_RESULT([yes]) - $3=$path - AC_SUBST($3) +AC_DEFUN([OVS_CHECK_LINUX26], [ + AC_ARG_WITH([l26], + [AC_HELP_STRING([--with-l26=/path/to/linux-2.6], + [Specify the linux 2.6 kernel build directory])], + [KBUILD26="$withval"], [KBUILD26=])dnl + AC_ARG_WITH([l26-source], + [AC_HELP_STRING([--with-l26-source=/path/to/linux-2.6-source], + [Specify the linux 2.6 kernel source directory + (usually figured out automatically from build + directory)])], + [KSRC26="$withval"], [KSRC26=])dnl + if test -n "$KBUILD26"; then + KBUILD26=`eval echo "$KBUILD26"` + case $KBUILD26 in + /*) ;; + *) KBUILD26=`pwd`/$KBUILD26 ;; + esac + + # The build directory is what the user provided. + # Make sure that it exists. + AC_MSG_CHECKING([for Linux 2.6 build directory]) + if test -d "$KBUILD26"; then + AC_MSG_RESULT([$KBUILD26]) + AC_SUBST(KBUILD26) else AC_MSG_RESULT([no]) - AC_ERROR([source dir $path doesn't exist]) + AC_ERROR([source dir $KBUILD26 doesn't exist]) + fi + + # Debian breaks kernel headers into "source" header and "build" headers. + # We want the source headers, but $KBUILD26 gives us the "build" headers. + # Use heuristics to find the source headers. + AC_MSG_CHECKING([for Linux 2.6 source directory]) + if test -n "$KSRC26"; then + KSRC26=`eval echo "$KSRC26"` + case $KSRC26 in + /*) ;; + *) KSRC26=`pwd`/$KSRC26 ;; + esac + if test ! -e $KSRC26/include/linux/kernel.h; then + AC_MSG_ERROR([$KSRC26 is not a kernel source directory)]) + fi + else + KSRC26=$KBUILD26 + if test ! -e $KSRC26/include/linux/kernel.h; then + case `echo "$KBUILD26" | sed 's,/*$,,'` in # ( + */build) + KSRC26=`echo "$KBUILD26" | sed 's,/build/*$,/source,'` + ;; # ( + *) + KSRC26=`(cd $KBUILD26 && pwd -P) | sed 's,-[[^-]]*$,-common,'` + ;; + esac + fi + if test ! -e $KSRC26/include/linux/kernel.h; then + AC_MSG_ERROR([cannot find source directory (please use --with-l26-source)]) + fi fi + AC_MSG_RESULT([$KSRC26]) - AC_MSG_CHECKING([for $path kernel version]) - patchlevel=`sed -n 's/^PATCHLEVEL = //p' "$path/Makefile"` - sublevel=`sed -n 's/^SUBLEVEL = //p' "$path/Makefile"` + AC_MSG_CHECKING([for kernel version]) + patchlevel=`sed -n 's/^PATCHLEVEL = //p' "$KSRC26/Makefile"` + sublevel=`sed -n 's/^SUBLEVEL = //p' "$KSRC26/Makefile"` + if test -z "$patchlevel" || test -z "$sublevel"; then + AC_ERROR([cannot determine kernel version]) + fi AC_MSG_RESULT([2.$patchlevel.$sublevel]) - if test "2.$patchlevel" != '$2'; then - AC_ERROR([Linux kernel source in $path is not version $2]) + if test "2.$patchlevel" != '2.6'; then + if test "$BUILD26" = "$KSRC26"; then + AC_ERROR([Linux kernel in $KBUILD26 is not version 2.6]) + else + AC_ERROR([Linux kernel in build tree $KBUILD26 (source tree $KSRC26) is not version 2.6]) + fi fi - if ! test -e "$path"/include/linux/version.h || \ - ! test -e "$path"/include/linux/autoconf.h; then - AC_MSG_ERROR([Linux kernel source in $path is not configured]) + if test ! -e "$KBUILD26"/include/linux/version.h || \ + (test ! -e "$KBUILD26"/include/linux/autoconf.h && \ + test ! -e "$KBUILD26"/include/generated/autoconf.h); then + AC_MSG_ERROR([Linux kernel source in $KBUILD26 is not configured]) fi - m4_if($2, [2.6], [OVS_CHECK_LINUX26_COMPAT]) + OVS_CHECK_LINUX26_COMPAT + elif test -n "$KSRC26"; then + AC_MSG_ERROR([--with-l26-source may not be specified without --with-l26]) fi - AM_CONDITIONAL($4, test -n "$path") + AM_CONDITIONAL(L26_ENABLED, test -n "$KBUILD26") ]) dnl OVS_GREP_IFELSE(FILE, REGEX, IF-MATCH, IF-NO-MATCH) @@ -80,16 +132,6 @@ AC_DEFUN([OVS_DEFINE], [ echo '#define $1 1' >> datapath/linux-2.6/kcompat.h.new ]) -AC_DEFUN([OVS_CHECK_VETH], [ - AC_MSG_CHECKING([whether to build veth module]) - if test "$sublevel" = 18; then - AC_MSG_RESULT([yes]) - AC_SUBST([BUILD_VETH], 1) - else - AC_MSG_RESULT([no]) - fi -]) - AC_DEFUN([OVS_CHECK_LOG2_H], [ AC_MSG_CHECKING([for $KSRC26/include/linux/log2.h]) if test -e $KSRC26/include/linux/log2.h; then @@ -103,24 +145,62 @@ AC_DEFUN([OVS_CHECK_LOG2_H], [ dnl OVS_CHECK_LINUX26_COMPAT dnl dnl Runs various Autoconf checks on the Linux 2.6 kernel source in -dnl the directory in $KSRC26. +dnl the directory in $KBUILD26. AC_DEFUN([OVS_CHECK_LINUX26_COMPAT], [ rm -f datapath/linux-2.6/kcompat.h.new mkdir -p datapath/linux-2.6 : > datapath/linux-2.6/kcompat.h.new - OVS_GREP_IFELSE([$KSRC26/include/linux/skbuff.h], [skb_transport_header], - [OVS_DEFINE([HAVE_SKBUFF_HEADER_HELPERS])]) + + OVS_GREP_IFELSE([$KSRC26/include/linux/err.h], [ERR_CAST], + [OVS_DEFINE([HAVE_ERR_CAST])]) + + OVS_GREP_IFELSE([$KSRC26/include/linux/in.h], [ipv4_is_multicast], + [OVS_DEFINE([HAVE_IPV4_IS_MULTICAST])]) + + OVS_GREP_IFELSE([$KSRC26/include/linux/netdevice.h], [dev_disable_lro], + [OVS_DEFINE([HAVE_DEV_DISABLE_LRO])]) + OVS_GREP_IFELSE([$KSRC26/include/linux/netdevice.h], [dev_get_stats], + [OVS_DEFINE([HAVE_DEV_GET_STATS])]) + + # Check for the proto_data_valid member in struct sk_buff. The [^@] + # is necessary because some versions of this header remove the + # member but retain the kerneldoc comment that describes it (which + # starts with @). The brackets must be doubled because of m4 + # quoting rules. + OVS_GREP_IFELSE([$KSRC26/include/linux/skbuff.h], [[[^@]]proto_data_valid], + [OVS_DEFINE([HAVE_PROTO_DATA_VALID])]) OVS_GREP_IFELSE([$KSRC26/include/linux/skbuff.h], [raw], [OVS_DEFINE([HAVE_MAC_RAW])]) + OVS_GREP_IFELSE([$KSRC26/include/linux/skbuff.h], [skb_dst(], + [OVS_DEFINE([HAVE_SKB_DST_ACCESSOR_FUNCS])]) OVS_GREP_IFELSE([$KSRC26/include/linux/skbuff.h], [skb_copy_from_linear_data_offset], [OVS_DEFINE([HAVE_SKB_COPY_FROM_LINEAR_DATA_OFFSET])]) + OVS_GREP_IFELSE([$KSRC26/include/linux/skbuff.h], [skb_cow_head], + [OVS_DEFINE([HAVE_SKB_COW_HEAD])]) + OVS_GREP_IFELSE([$KSRC26/include/linux/skbuff.h], [skb_transport_header], + [OVS_DEFINE([HAVE_SKBUFF_HEADER_HELPERS])]) + OVS_GREP_IFELSE([$KSRC26/include/linux/skbuff.h], [skb_warn_if_lro], + [OVS_DEFINE([HAVE_SKB_WARN_LRO])]) + + OVS_GREP_IFELSE([$KSRC26/include/linux/string.h $KSRC26/include/linux/slab.h], + [kmemdup], [OVS_DEFINE([HAVE_KMEMDUP])]) + + OVS_GREP_IFELSE([$KSRC26/include/linux/types.h], [bool], + [OVS_DEFINE([HAVE_BOOL_TYPE])]) + OVS_GREP_IFELSE([$KSRC26/include/linux/types.h], [__wsum], + [OVS_DEFINE([HAVE_CSUM_TYPES])]) + + OVS_GREP_IFELSE([$KSRC26/include/net/checksum.h], [csum_unfold], + [OVS_DEFINE([HAVE_CSUM_UNFOLD])]) + OVS_GREP_IFELSE([$KSRC26/include/net/netlink.h], [NLA_NUL_STRING], [OVS_DEFINE([HAVE_NLA_NUL_STRING])]) - OVS_GREP_IFELSE([$KSRC26/include/linux/err.h], [ERR_CAST], - [OVS_DEFINE([HAVE_ERR_CAST])]) + OVS_GREP_IFELSE([$KSRC26/include/net/netlink.h], [nla_get_be16], + [OVS_DEFINE([HAVE_NLA_GET_BE16])]) + OVS_CHECK_LOG2_H - OVS_CHECK_VETH + if cmp -s datapath/linux-2.6/kcompat.h.new \ datapath/linux-2.6/kcompat.h >/dev/null 2>&1; then rm datapath/linux-2.6/kcompat.h.new @@ -159,6 +239,7 @@ AC_DEFUN([OVS_CHECK_STRTOK_R], char *token1, *token2; token1 = strtok_r(string, ":", &save_ptr); token2 = strtok_r(NULL, ":", &save_ptr); + freopen ("/dev/null", "w", stdout); printf ("%s %s\n", token1, token2); return 0; ]])], @@ -190,7 +271,7 @@ AC_DEFUN([OVS_CHECK_CC_OPTION], AC_COMPILE_IFELSE([AC_LANG_PROGRAM(,)], [ovs_cv_name[]=yes], [ovs_cv_name[]=no]) CFLAGS="$ovs_save_CFLAGS"]) if test $ovs_cv_name = yes; then - m4_if([$2], [], [;], [$2]) + m4_if([$2], [], [:], [$2]) else m4_if([$3], [], [:], [$3]) fi @@ -198,8 +279,19 @@ AC_DEFUN([OVS_CHECK_CC_OPTION], dnl OVS_ENABLE_OPTION([OPTION]) dnl Check whether the given C compiler OPTION is accepted. -dnl If so, add it to CFLAGS. +dnl If so, add it to WARNING_FLAGS. dnl Example: OVS_ENABLE_OPTION([-Wdeclaration-after-statement]) AC_DEFUN([OVS_ENABLE_OPTION], - [OVS_CHECK_CC_OPTION([$1], [CFLAGS="$CFLAGS $1"])]) + [OVS_CHECK_CC_OPTION([$1], [WARNING_FLAGS="$WARNING_FLAGS $1"]) + AC_SUBST([WARNING_FLAGS])]) + +dnl OVS_CONDITIONAL_CC_OPTION([OPTION], [CONDITIONAL]) +dnl Check whether the given C compiler OPTION is accepted. +dnl If so, enable the given Automake CONDITIONAL. + +dnl Example: OVS_CONDITIONAL_CC_OPTION([-Wno-unused], [HAVE_WNO_UNUSED]) +AC_DEFUN([OVS_CONDITIONAL_CC_OPTION], + [OVS_CHECK_CC_OPTION( + [$1], [ovs_have_cc_option=yes], [ovs_have_cc_option=no]) + AM_CONDITIONAL([$2], [test $ovs_have_cc_option = yes])]) dnl ----------------------------------------------------------------------