pkg/40990: net-snmp package assumes struct timeval

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>Number:         40990
>Category:       pkg
>Synopsis:       net-snmp package assumes struct timeval
>Confidential:   no
>Severity:       serious
>Priority:       medium
>Responsible:    pkg-manager
>State:          open
>Class:          sw-bug
>Submitter-Id:   net
>Arrival-Date:   Mon Mar 09 12:10:01 +0000 2009
>Originator:     Alan Barrett
>Release:        NetBSD 5.99.7
>Organization:
Not much
>Environment:
System: NetBSD i386
>Description:
pkgsrc/net/net-snmp won't build on NetBSD-current, because some of the
kernel data structures that used to contain struct timeval now contain
struct timespec.

>How-To-Repeat:
$ cd pkgsrc/net/net-snmp
$ make
[...]
mibII/interfaces.c: In function 'var_ifEntry':
mibII/interfaces.c:833: error: 'struct timespec' has no member named 'tv_usec'
mibII/interfaces.c:840: error: 'struct timespec' has no member named 'tv_usec'

>Fix:
A search for "tv_usec" in the net-snmp sources finds many uses, some
of which work and some of which fail in NetBSD-current.  I suppose we
need a configure test to figure out which data should be struct timespec
instead of struct timeval, and conditional code to use tv_nsec instead
of tv_usec in appropriate places.