[ovs-dev] [PATCH] compat: Fix RHEL7 build.

[Ben Pfaff]

On Tue, Mar 24, 2015 at 04:59:44PM -0700, Joe Stringer wrote:
> Tested against 3.10.0-229.el7.x86_64.
> 
> Signed-off-by: Joe Stringer <joestringer at nicira.com>
> ---
>  acinclude.m4                                  |   48 ++++++++++++++++++++++++-
>  datapath/compat.h                             |    6 ++--
>  datapath/linux/compat/genetlink-openvswitch.c |    2 +-
>  datapath/linux/compat/include/linux/skbuff.h  |    5 ++-
>  datapath/linux/compat/include/net/genetlink.h |    6 +++-
>  datapath/linux/compat/include/net/ip.h        |    2 +-
>  datapath/linux/compat/include/net/udp.h       |   19 ++++++++--
>  datapath/linux/compat/udp.c                   |    2 +-
>  8 files changed, 78 insertions(+), 12 deletions(-)
> 
> diff --git a/acinclude.m4 b/acinclude.m4
> index 5ed70c1..479da2e 100644
> --- a/acinclude.m4
> +++ b/acinclude.m4
> @@ -254,6 +254,37 @@ AC_DEFUN([OVS_GREP_IFELSE], [
>    fi
>  ])
>  
> +dnl OVS_FIND_FIELD_IFELSE(FILE, STRUCTURE, REGEX, [IF-MATCH], [IF-NO-MATCH])
> +dnl
> +dnl Looks for STRUCTURE in FILE. If it is found, greps for REGEX within the
> +dnl structure definition. If this is successful, runs IF-MATCH, otherwise
> +dnl IF_NO_MATCH. If IF-MATCH is empty then it defines to
> +dnl OVS_DEFINE(HAVE_<STRUCTURE>_WITH_<REGEX>), with <STRUCTURE> and <REGEX>
> +dnl translated to uppercase.
> +AC_DEFUN([OVS_FIND_FIELD_IFELSE], [
> +  AC_MSG_CHECKING([whether $2 has member $3 in $1])

I admire this macro.

Jesse or Pravin is probably better to actually review its usage.