Subject: Re: HEADS UP: new toolchain info! (now default on i386)
To: Todd Vierling <email@example.com>
From: James Chacon <firstname.lastname@example.org>
Date: 09/22/2001 23:48:00
This should all get noted in some way in the UPDATING file.
Also as each port is converted that should probably be noted there as well.
>Just before sending this message, USE_NEW_TOOLCHAIN became default on i386
>in -current. Some changes have happened with this transition, so this mail
>will briefly outline what the new toolchain does, and what mk.conf variables
>are of concern to new toolchain users (on all platforms, not just i386).
>=== general considerations
>* sharesrc (or at least, share/mk) is required in order to do "make build",
> whether new toolchain or old. The top level build now uses "-m" to pull
> the .mk files right out of the source tree -- thus avoiding version skew.
>* NOCLEANDIR is deliberately not honored under src/tools. The reason for
> this is that the update strategy of src/tools is a little different:
> - Tools are rebuilt based on timestamp checking between the installed
> tool and its sources; this means that a tool won't necessarily need
> rebuilding if its build directory has been cleandir'd.
> - Tools that are out-of-date are much more at risk of screwing up the
> build than sources in various main tree directories. Accordingly, a
> tool rebuild will *always* cleandir before building.
>* The system can now cross-build the standard "make build" from a 1.5 host,
> but automated kernel builds ("make release") have not been twiddled yet.
> This is coming next week. (Also, "lorder" will bitch about the use of
> symbolic names with "trap" in sh(1); this is harmlessly verbose, and I
> will work around it later.)
>* I'm currently setting up an environment to do testing on a few foreign
> host platforms (such as Cygwin), where there are other host tools that
> will need to be added to src/tools. So even if it all builds fine for
> you, you may still see more host tools pop up. 8-)
>=== mk.conf variables for USE_NEW_TOOLCHAIN systems
> yes [default] - use the new host toolchain for all source tree builds
> no - use system-supplied toolchain
> This is probably going to have odd reactions w.r.t. pkgsrc, and I added
> a conditional for BSD_PKG_MK in <bsd.own.mk> to take care of this,
> hopefully. I'll have to double-check it all this weekend.
> The purpose of setting this to "no" is if you want to build a portion of
> the tree without building the toolchain -- i.e. to update dhcpd or
> [default unset] - directory to hold host toolchain
> TOOLDIR defaults to unset, which means that it must be set by any system
> building to use the new host toolchain. (If USETOOLS=no, TOOLDIR is
> ignored.) This directory should correspond to a given source tree and
> host platform; it can contain multiple targets -- all target-specific
> binaries are divergently named.
> yes - rebuild host tools as needed
> no [default] - fail the build if a host tool needs to be updated
> always - rebuild all host tools on every build
>If you run into any trouble with this, please e-mail me. This will be
>documented more as the new toolchain is refined.
>I had to make this notice short because I will be traveling all day tomorrow
>(22 September 2001). However, I will check up in the evening and address
>any reported problems then.
>-- Todd Vierling <email@example.com> * Wasabi NetBSD: Run with it.
>-- NetBSD 1.5.2 available on CD-ROM soon! -- http://www.wasabisystems.com/