xsrc/58178: While building x11 with build.sh with use_tools, make use nbhost-mkdep instead of nbmkdep

[hashikaw%mail.ru@localhost]

>Number:         58178
>Category:       xsrc
>Synopsis:       While building x11 with build.sh with use_tools, make use nbhost-mkdep instead of nbmkdep
>Confidential:   no
>Severity:       serious
>Priority:       medium
>Responsible:    xsrc-manager
>State:          open
>Class:          sw-bug
>Submitter-Id:   net
>Arrival-Date:   Sat Apr 20 18:20:00 +0000 2024
>Originator:     Kouichi Hashikawa
>Release:        NetBSD-current, 10
>Organization:
>Environment:
>Description:
When building NetBSD-10's x11 with build.sh with use_tools,
nbhost-mkdep is used, then generate broken .d files.

dependall ===> external/mit/xorg/tools/fc-cache
nbmake[8]: /usr/obj/buildobs/obj/usr/obj/src/external/mit/xorg/tools/fc-cache/.depend, 1906: ignoring stale .depend for fcobjshash.gperf
#    create  fc-cache/fcobjs.d
/usr/obj/buildobs/tools/bin/nbhost-mkdep -f fcobjs.d.tmp  --      -DFONTCONFIG_PATH='"/usr/obj/buildobs/dest/etc/X11/fonts"
...
/usr/obj/xsrc/external/mit/fontconfig/dist/src/fcobjs.c &&  mv -f fcobjs.d.tmp fcobjs.d

On this stage, should we use nbmkdep (on tools)?

>How-To-Repeat:
always (but found the problem, sometimes).
>Fix: