pkg/53402: xentools48 does not build on NetBSD-current

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

>Number:         53402
>Category:       pkg
>Synopsis:       xentools48 does not build on NetBSD-current
>Confidential:   no
>Severity:       serious
>Priority:       high
>Responsible:    pkg-manager
>State:          open
>Class:          sw-bug
>Submitter-Id:   net
>Arrival-Date:   Wed Jun 27 09:10:00 +0000 2018
>Originator:     Andreas Gustafsson
>Release:        NetBSD-current, source date 2018.06.24.20.28.58
>Organization:

>Environment:
System: NetBSD
Architecture: x86_64
Machine: amd64
>Description:

Attempting to build the xentools48 package on NetBSD-current/amd64
using yesterday's http://ftp.netbsd.org/pub/pkgsrc/current/pkgsrc.tar.gz
fails with:

  In file included from ../../gcc-4.8.5/gcc/cp/except.c:1008:0:
  cfns.gperf: In function 'const char* libc_name_p(const char*, unsigned int)':
  cfns.gperf:101:1: error: 'const char* libc_name_p(const char*, unsigned int)' redeclared inline with 'gnu_inline' attribute
  cfns.gperf:26:14: note: 'const char* libc_name_p(const char*, unsigned int)' previously declared here
  cfns.gperf: At global scope:
  cfns.gperf:26:14: warning: inline function 'const char* libc_name_p(const char*, unsigned int)' used but never defined
  Makefile:1059: recipe for target 'cp/except.o' failed
  gmake[3]: *** [cp/except.o] Error 1

>How-To-Repeat:

>Fix: