Date: Thu, 23 Feb 2023 14:03:56 -0800 From: "Simon J. Gerraty" <sjg@juniper.net> To: Mark Millard <marklmi@yahoo.com> Cc: Bryan Drewery <bdrewery@FreeBSD.org>, Current FreeBSD <freebsd-current@FreeBSD.org>, Peter <pmc@citylink.dinoex.sub.org>, <sjg@juniper.net> Subject: Re: FYI: Why META_MODE rebuilds so much for building again after installworld (no source changes) Message-ID: <30.1677189836@kaos.jnpr.net> In-Reply-To: <AE95CF5D-0B7E-4DA3-8777-5FA47E1751D8@yahoo.com> References: <B74790D9-FBC2-4818-BEAF-34E5B705C460@yahoo.com> <3345EBA5-A09C-4E3F-B94D-39F57F56BDBB@yahoo.com> <DB0C7B41-2101-4C5C-BFC8-3C95CC0B9F6F@yahoo.com> <73088.1611797582@kaos.jnpr.net> <CB7040D0-3BF4-496F-A54F-87E5378016E0@yahoo.com> <F6BF110D-7855-4A10-A53F-52B34282234F@yahoo.com> <10819.1677108389@kaos.jnpr.net> <76FA98EF-6184-4D7E-A01F-0EE8117D0D10@yahoo.com> <29887.1677115125@kaos.jnpr.net> <27790339-240F-4C97-97C7-38AFD8DE03D5@yahoo.com> <7FB6F619-6E71-4075-8A6C-573564371DD5@yahoo.com> <2655.1677134606@kaos.jnpr.net> <242BB478-B2FE-4BCC-A56E-098F3FEB3EE1@yahoo.com> <42586.1677183334@kaos.jnpr.net> <AE95CF5D-0B7E-4DA3-8777-5FA47E1751D8@yahoo.com>
next in thread | previous in thread | raw e-mail | index | archive | help
Mark Millard <marklmi@yahoo.com> wrote:
> So I was hoping for a "assigned once and
> inherited" status relative to submakes for
> .MAKE.META.IGNORE_PATHS .
No, .MAKE.* are specifically named to ensure they cannot come from the
environment. So bounding them in a check for level 0 pretty much
ensures they have no effect.
> > In which case the above would not be correct.
> =
> And I've not found any notation that is always correct
I think your fundamental issue is above.
These variables apply only per make instance.
They are not inherited, they are not global.
As I mentioned previously, there is no variablity of OBJTOP within the
context of a single make instance - at least not once it starts running
targets.
> but adjusts to what /usr/obj/BUILDs/*/usr/main-src/*.*/
> I happen to be building for. The example that I've
> been showing is main-amd64-nodbg-clang with amd64.amd64
> but there are other *-*-*dbg-* and *.* that I build for.
Sorry I guess I'm not following what you are saying as I cannot see how
any of that is relevant.
> =
> (I have found multiple notations that work for
> -V.MAKE.META.IGNORE_PATHS .)
Sorry not sure what that means. Note that when you do
make -V BLAH
you are seeing the value of BLAH as level 0 sees it - which in your
setup looks right. But because of your conditional on level 0
the effect is not what you want once the build gets going.
=
> I'm wondering if I need to invent a new, personal name
> that will not clash with official names and just use
> reference to to my name, adjusting my build scripts
> to provide the definition.
Sorry, a name for what?
> =
> So: I'm still searching for approriate notation, at least
> for the tmp/legacy/usr/ related paths. (The tmp/usr/bin/
> experiment is more questionable it is appropriate overall.)
Again not really following. If there are paths under tmp/legacy/usr/
that should be ignored by meta.c - why would that not be so for
everyone?
> Until I know a valid notational technique, expect to
> see experiments involved in what I do. Going the other
> way: if I'm to test something for you, let me know the
> context you want used instead of whatever my experiment
> status happens to be.
> =
> >> For reference:
> >>
> >> # more ~/sys-build-scripts.amd64-host/make-main-amd64-nodbg-clang.amd=
64-host.sh
> >> kldload -n filemon && \
> >> cd /usr/main-src/ && \
> >> mkdir -p /usr/obj/BUILDs/main-amd64-nodbg-clang/sys-typescripts/ && \
> >> script /usr/obj/BUILDs/main-amd64-nodbg-clang/sys-typescripts/typescr=
ipt-make-amd64-nodbg-clang-amd64-host-$(date +%Y-%m-%d:%H:%M:%S) \
> >> env __MAKE_CONF=3D"/usr/home/root/src.configs/make.conf" SRCCONF=3D"/=
dev/null" SRC_ENV_CONF=3D"/usr/home/root/src.configs/src.conf.amd64-nodbg-=
clang.amd64-host" \
> >> WITH_META_MODE=3Dyes \
> >> MAKEOBJDIRPREFIX=3D"/usr/obj/BUILDs/main-amd64-nodbg-clang" \
> >> make $*
This is why we introduced variables like SRCTOP and OBJTOP behind which yo=
u
can hide all the above. It should not matter what or how OBJTOP gets its
value it should be useful.
.MAKE.META.IGNORE_PATHS +=3D ${OBJTOP}/tmp/legacy/usr
should result in nothing under ${OBJTOP}/tmp/legacy/usr causing a target
to be out of date - just because it is newer.
Want to link to this message? Use this URL: <https://mail-archive.FreeBSD.org/cgi/mid.cgi?30.1677189836>