Date: Mon, 8 Dec 2014 09:49:37 -0800 From: Alfred Perlstein <bright@mu.org> To: Garrett Cooper <yaneurabeya@gmail.com> Cc: FreeBSD Hackers <freebsd-hackers@freebsd.org> Subject: Re: cross installing freebsd? Message-ID: <F2CF5BF3-2F72-46E6-98EB-B54DED1C5EC1@mu.org> In-Reply-To: <D52BA30D-1DF9-4CBF-BB1F-FE9C9B681FE3@freebsd.org> References: <5483AE21.8090306@freebsd.org> <D925B118-113F-42CB-8F1F-6B9087F0CF4D@gmail.com> <613884DA-F978-4D9F-9E37-D39581EFEA61@freebsd.org> <26F569E9-3E70-4CE7-810F-5427FF1C7EA0@gmail.com> <D52BA30D-1DF9-4CBF-BB1F-FE9C9B681FE3@freebsd.org>
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On Dec 8, 2014, at 9:47 AM, Alfred Perlstein wrote:
>=20
> On Dec 8, 2014, at 2:04 AM, Garrett Cooper wrote:
>=20
>> On Dec 7, 2014, at 21:48, Alfred Perlstein <alfred@freebsd.org> =
wrote:
>>=20
>>>> Hi Alfred,
>>>> Reading your examples...
>>>> 1. I=92m wondering if we should formalize CROSS_BUILD_TESTING in =
Makefile.inc1:
>>>>=20
>>>> 188 .if ${MACHINE} =3D=3D ${TARGET} && ${MACHINE_ARCH} =3D=3D =
${TARGET_ARCH} && !defined(CROSS_BUILD_TESTING)
>>>> 189 OBJTREE=3D ${MAKEOBJDIRPREFIX}
>>>> 190 .else
>>>> 191 OBJTREE=3D ${MAKEOBJDIRPREFIX}/${TARGET}.${TARGET_ARCH}
>>>> 192 .endif
>>>>=20
>>>> 2. MAKEWHATIS seems like it should be added to ITOOLS. Do you =
agree?
>>>> 3. Seems like strip should be added to ITOOLS if =
CROSS_BUILD_TESTING is defined (or at the very least LOCAL_ITOOLS).
>>>> 4. Why did you need to explicitly define the path to INSTALL?
>>>> Thanks!
>>>=20
>>> To be honest I have a gist as to what you're saying but I think the =
build is suffering from shibboleth-itis. Meaning it's not serviceable =
unless you're intimately familiar with it=85
>>=20
>> Right. I didn=92t know about all of these magic things until I =
started reading the Makefiles :).
>>=20
>>> I *guess* that ITOOLS or maybe LOCAL_ITOOLS means programs needed to =
installworld/installkernel?
>>=20
>> Yes. Basically for things that can be replaced while make =
installworld is run, or as Makefile.inc1 says=85
>>=20
>> "# Required install tools to be saved in a scratch dir for safety.=94
>>=20
>> All the libraries for the tools are backed up so if the tools get =
replaced while make distributeworld/installworld is running, your system =
won=92t be hosed (that=92s why make installworld works for me the =
majority of the time, if cp gets replaced and ABI changes =97 not =
always, but oftentimes).
>>=20
>>> If so, then yes, makewhatis needs to be added to that.
>>=20
>> Review opened for that issue: https://reviews.freebsd.org/D1280
>>=20
>>> As far as everything else written:
>>> no idea what "CROSS_BUILD_TESTING" means, it's not documented =
anywhere I can see in the makefile.
>>=20
>> It=92s something that ru@ introduced (probably to do comparisons =
between architectures). I haven=92t quite tracked down why make =
tinderbox works with TARGET_ARCH/TARGET set to the host values, but I=92ll=
probably figure it out soon.
>>=20
>>> I can't decode if there will be a target that "just works" for doing =
a cross-install, will there be? What will it be named and how will =
people invoke it?
>>>=20
>>=20
>>> Can we have cross-installworld and cross-installkernel targets =
please?
>>=20
>> Setting TARGET/TARGET_ARCH should be sufficient in an ideal world. =
Jumping through hoops to do this with a myriad of variables which should =
be automatically determined via sane defaults seems wrong/unusable=85 =
there shouldn=92t be a reason for why we need to introduce autoconf =
variable style hell for building/installing world, unless someone is =
intentionally skating around sane defaults.
>>=20
>> I think that creating more custom targets will only complicate/muddle =
the build process, and create more potential for bugs like the one that =
I just addressed with xdev.
>=20
>=20
> I still don't see how I am supposed to do this:
>=20
> ssh amd64_machine
> export TARGET=3Di386
> cd /usr/trees/freebsd
> make -j8 build world && make -j8 buildkernel
>=20
> ssh i386box
> mount amd64_machine:/usr/trees/freebsd /usr/trees/freebsd
> mount amd64_machine:/usr/obj /usr/obj
> cd /usr/trees/freebsd
> make installkernel installworld
>=20
> That last step "make installkernel installworld" will bomb out unless =
I set those vars CC=3D/usr/bin/cc, MAKEWHATIS=3D/usr/bin/makewhatis, =
STRIPBIN=3D/usr/bin/strip, INSTALL=3D/usr/bin/install all over the =
place. Why is there not a target for this that just knows the right =
things to set?
>=20
I just re-read your original mail, if what you're saying is that on the =
i386 box I need to set "TARGET_ARCH" or "TARGET" or "I_AM_A_DERP" vars =
to something, then just say what those magic vars are so I can document =
it please.
gah!
-Alfred=
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