toolchain/48627: CTFCONVERT is set depending on properties of the build host

[martin%NetBSD.org@localhost]

>Number:         48627
>Category:       toolchain
>Synopsis:       CTFCONVERT is set depending on properties of the build host
>Confidential:   no
>Severity:       serious
>Priority:       medium
>Responsible:    toolchain-manager
>State:          open
>Class:          sw-bug
>Submitter-Id:   net
>Arrival-Date:   Sat Mar 01 14:45:00 +0000 2014
>Originator:     Martin Husemann
>Release:        NetBSD 6.99.32
>Organization:
The NetBSD Foundation, Inc.
>Environment:
System: NetBSD night-owl.duskware.de 6.99.32 NetBSD 6.99.32 (NIGHT-OWL) #231: 
Sat Feb 22 10:32:03 CET 2014 
martin%night-owl.duskware.de@localhost:/usr/src/sys/arch/amd64/compile/NIGHT-OWL
 amd64
Architecture: x86_64
Machine: amd64
>Description:

In sys.mk CTFCONVERT is defined, if /usr/bin/ctfconvert exists on the build
host. This is obviously broken (see PR 48623 for fallout).

This needs to check MKDTRACE or similar, and ideally be overridable by
the makefile (especially when creating a.out format kernels or bootloaders).

>How-To-Repeat:
code inspection

>Fix:
n/a