Those are just referring to bits required to build the system with.

The toolchain bits used to build do not have to be exactly the same option for
option as the ones outputed from the build. i.e. mtree has many many more 
options than will ever get used by the build process but some pieces of it
are necessary.

I did find some other problems with mtree in src/tools and just committed 
some fixes.

James

>
>James Chacon <jchacon@genuity.net> writes:
>
>> This is not unusual. There are whole sections of the tree that require boot
>> strapping of current libs/includes before they'll build on older systems.
>> 
>> I suggest reading through the build docs and UPDATING.
>
>Right, and BUILDING claims a posix system is need to build tools. An
>example of exeption to this is nb_progname.c. I guess CYGWIN don't have
>RMD-160, true ?
>
>So my real question is what new features will not be put in the toolchain
>because the host-system sucks.
>
>Love
>
>PS
>
>Index: BUILDING.mdoc
>===================================================================
>RCS file: /cvsroot/basesrc/BUILDING.mdoc,v
>retrieving revision 1.7
>diff -w -u -r1.7 BUILDING.mdoc
>--- BUILDING.mdoc       2001/11/01 16:34:21     1.7
>+++ BUILDING.mdoc       2001/11/08 19:58:55
>@@ -110,9 +110,7 @@
> .Bl -tag -width "BUILDING.mdoc"
> .It Sy BUILDING.mdoc
> This document (in -mdoc troff format; the original copy).
>-.It Sy BUILDING.html
>-This document (in formatted HTML).
>-.It Sy BUILDING.txt
>+.It Sy BUILDING
> This document (in plaintext).
> .It Sy Makefile
> The main Makefile for
>
>
>
>