Date: Mon, 8 Dec 2014 09:47:17 -0800 From: Alfred Perlstein <alfred@freebsd.org> To: Garrett Cooper <yaneurabeya@gmail.com> Cc: FreeBSD Hackers <freebsd-hackers@freebsd.org> Subject: Re: cross installing freebsd? Message-ID: <D52BA30D-1DF9-4CBF-BB1F-FE9C9B681FE3@freebsd.org> In-Reply-To: <26F569E9-3E70-4CE7-810F-5427FF1C7EA0@gmail.com> 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>
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On Dec 8, 2014, at 2:04 AM, Garrett Cooper wrote:
> On Dec 7, 2014, at 21:48, Alfred Perlstein <alfred@freebsd.org> wrote:
>
>>> Hi Alfred,
>>> Reading your examples...
>>> 1. I’m wondering if we should formalize CROSS_BUILD_TESTING in Makefile.inc1:
>>>
>>> 188 .if ${MACHINE} == ${TARGET} && ${MACHINE_ARCH} == ${TARGET_ARCH} && !defined(CROSS_BUILD_TESTING)
>>> 189 OBJTREE= ${MAKEOBJDIRPREFIX}
>>> 190 .else
>>> 191 OBJTREE= ${MAKEOBJDIRPREFIX}/${TARGET}.${TARGET_ARCH}
>>> 192 .endif
>>>
>>> 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!
>>
>> 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…
>
> Right. I didn’t know about all of these magic things until I started reading the Makefiles :).
>
>> I *guess* that ITOOLS or maybe LOCAL_ITOOLS means programs needed to installworld/installkernel?
>
> Yes. Basically for things that can be replaced while make installworld is run, or as Makefile.inc1 says…
>
> "# Required install tools to be saved in a scratch dir for safety.”
>
> All the libraries for the tools are backed up so if the tools get replaced while make distributeworld/installworld is running, your system won’t be hosed (that’s why make installworld works for me the majority of the time, if cp gets replaced and ABI changes — not always, but oftentimes).
>
>> If so, then yes, makewhatis needs to be added to that.
>
> Review opened for that issue: https://reviews.freebsd.org/D1280
>
>> As far as everything else written:
>> no idea what "CROSS_BUILD_TESTING" means, it's not documented anywhere I can see in the makefile.
>
> It’s something that ru@ introduced (probably to do comparisons between architectures). I haven’t quite tracked down why make tinderbox works with TARGET_ARCH/TARGET set to the host values, but I’ll probably figure it out soon.
>
>> 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?
>>
>
>> Can we have cross-installworld and cross-installkernel targets please?
>
> 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… there shouldn’t 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.
>
> 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.
I still don't see how I am supposed to do this:
ssh amd64_machine
export TARGET=i386
cd /usr/trees/freebsd
make -j8 build world && make -j8 buildkernel
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
That last step "make installkernel installworld" will bomb out unless I set those vars CC=/usr/bin/cc, MAKEWHATIS=/usr/bin/makewhatis, STRIPBIN=/usr/bin/strip, INSTALL=/usr/bin/install all over the place. Why is there not a target for this that just knows the right things to set?
-Alfred
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