port-vax/41518: vax misses the _lwp_makecontext() C library implementation

[he%NetBSD.org@localhost]

>Number:         41518
>Category:       port-vax
>Synopsis:       vax misses the _lwp_makecontext() C library implementation
>Confidential:   no
>Severity:       non-critical
>Priority:       medium
>Responsible:    port-vax-maintainer
>State:          open
>Class:          sw-bug
>Submitter-Id:   net
>Arrival-Date:   Mon Jun 01 09:05:00 +0000 2009
>Originator:     Havard Eidnes
>Release:        NetBSD-current of May 31 2009
>Organization:
        I Try
>Environment:
System: NetBSD quattro.urc.uninett.no 3.1_STABLE NetBSD 3.1_STABLE (QUATTRO) 
#2: Tue Aug 12 11:13:04 CEST 2008 
he%quattro.urc.uninett.no@localhost:/usr/obj/sys/arch/i386/compile/QUATTRO i386 
(host system)
Architecture: vax
Machine: vax
>Description:
        Trying to build the vax ports reveals a build bug trying
        to build BIND:

       link  dig/dig
/u/build/HEAD/dest/vax/usr/lib/libpthread.so: undefined reference to 
`_lwp_makecontext'
collect2: ld returned 1 exit status

        A further inspection reveals that the reason is that the vax
        port does not actually have an implementation of _lwp_makecontext
        in the C library, which should have been in

        lib/libc/arch/vax/_lwp.c

>How-To-Repeat:
        Try to build NetBSD-current for vax, watch it fail as above.
>Fix:
        Sorry, don't know.