pkg/53581: devel/lua-posix build problems: CLOCK_{PROCESS,THREAD}_CPUTIME_ID undefined

[ef%math.uni-bonn.de@localhost]

>Number:         53581
>Category:       pkg
>Synopsis:       devel/lua-posix build problems: CLOCK_{PROCESS,THREAD}_CPUTIME_ID undefined
>Confidential:   no
>Severity:       serious
>Priority:       medium
>Responsible:    pkg-manager
>State:          open
>Class:          sw-bug
>Submitter-Id:   net
>Arrival-Date:   Thu Sep 06 15:30:00 +0000 2018
>Originator:     Edgar FuÃ?
>Release:        pkgsrc-2018Q2
>Organization:
Mathematisches Institur der Universität Bonn
>Description:
	If _POSIX_TIMERS is defined and not -1, lua-posix tries to use CLOCK_{PROCESS,THREAD}_CPUTIME_ID. On NetBSD 6/7, these are not defined.
>How-To-Repeat:
	Build devel/lua-posix on NetBSD<8
>Fix:
	I don't know whether the fault is with luaposix to infer CLOCK_{PROCESS,THREAD}_CPUTIME_ID being defined when _POSIX_TIMERS is or with NetBSD to define the latter, but not the former, so I haven't (yet) reported this upstream.
	However, the following patch seems to work:

	$NetBSD: patch-ext_posix_time.c$

	Only use CLOCK_{PROCESS,THREAD}_CPUTIME_ID if defined

	--- ext/posix/time.c.orig      2018-02-21 03:29:31.000000000 +0100
	+++ ext/posix/time.c   2018-08-31 19:43:01.000000000 +0200
	@@ -350,10 +350,14 @@ luaopen_posix_time(lua_State *L)
	 
	 #if defined _POSIX_TIMERS && _POSIX_TIMERS != -1
	       LPOSIX_CONST( CLOCK_MONOTONIC           );
	+#if defined CLOCK_PROCESS_CPUTIME_ID
	       LPOSIX_CONST( CLOCK_PROCESS_CPUTIME_ID  );
	+#endif
	       LPOSIX_CONST( CLOCK_REALTIME            );
	+#if defined CLOCK_THREAD_CPUTIME_ID
	       LPOSIX_CONST( CLOCK_THREAD_CPUTIME_ID   );
	 #endif
	+#endif
	 
	       return 1;
	 }