misc/51098: NetBSD-current fails to build on Debian 7 host

[gson%gson.org@localhost (Andreas Gustafsson)]

>Number:         51098
>Category:       misc
>Synopsis:       NetBSD-current fails to build on Debian 7 host
>Confidential:   no
>Severity:       serious
>Priority:       medium
>Responsible:    misc-bug-people
>State:          open
>Class:          sw-bug
>Submitter-Id:   net
>Arrival-Date:   Thu Apr 28 07:05:00 +0000 2016
>Originator:     Andreas Gustafsson
>Release:        NetBSD-current
>Organization:
>Environment:
System: NetBSD
Architecture: i386
Machine: i386
>Description:

Some months ago I set up a cron job to do nightly builds of
NetBSD-current/i386 on a Debian 7 amd64 host, but I had not been
monitoring it closely since then.  When I finally had a look at it
yesterday, I found that the builds had been failing since January.

The latest build failed with:

  --- ctf_error.lo ---
  In file included from /bracket/build/2016.04.27.21.15.40-i386/src/tools/libctf/../compat/compat_defs.h:39:0,
		   from /bracket/build/2016.04.27.21.15.40-i386/tools/include/compat/nbtool_config.h:720,
		   from /bracket/build/2016.04.27.21.15.40-i386/src/tools/libctf/../../external/cddl/osnet/dist/common/ctf/ctf_error.c:23:
  /bracket/build/2016.04.27.21.15.40-i386/src/tools/libctf/../../external/cddl/osnet/sys/sys/time.h: In function 'gethrtime':
  /bracket/build/2016.04.27.21.15.40-i386/src/tools/libctf/../../external/cddl/osnet/sys/sys/time.h:84:20: error: 'NULL' undeclared (first use in this function)
  /bracket/build/2016.04.27.21.15.40-i386/src/tools/libctf/../../external/cddl/osnet/sys/sys/time.h:84:20: note: each undeclared identifier is reported only once for each function it appears in
  *** [ctf_error.lo] Error code 1

Additional logs are at:

  http://www.gson.org/netbsd/bugs/build/i386-linuxhost/

>How-To-Repeat:

Attempt to build a NetBSD-current/i386 release on Debian 7.

>Fix: