11.0-CURRENT -r300770 libc++ update vs. lang/powerpc64-xtoolchain-gcc: no go [self hosted powerpc64 context]

Mark Millard markmi at dsl-only.net
Fri May 27 21:56:18 UTC 2016

On 2016-May-27, at 1:50 PM, Dimitry Andric <dim at FreeBSD.org> wrote:
> On 27 May 2016, at 01:53, Mark Millard <markmi at dsl-only.net> wrote:
>> I do buildworld/buildkernel on a powerpc64 targeting itself via lang/powerpc64-xtoolchain-gcc (a.k.a. lang/powerpc64-gcc for the most part). [Getting that lang/powerpc64-gcc installed for self-hosted use does take some work-around activity.] I have buildworld build clang (but not use it). [I've been doing this with 11.0-CURRENT for a long time.]
>> Actually I use lang/gcc49 as the "system compiler" and lang/powerpc64-gcc as the self-hosting so-called "cross compiler". (I later list the src.conf content.) gcc4.2.1 is not installed.
>> Trying to go from:
>>> # uname -apKU
>>> FreeBSD FBSDG5C0 11.0-CURRENT FreeBSD 11.0-CURRENT #36 r300531M: Mon May 23 20:13:52 PDT 2016     root at FBSDG5C0:/usr/obj/xtoolchain/powerpc.powerpc64/usr/src/sys/GENERIC64vtsc-NODEBUG  powerpc powerpc64 1100111 1100111
>> (for which -r300531 built and installed fine this way) to -r300777 now fails with errors such as:
>>> --- lib/libc++__L ---
>>> In file included from /usr/src/lib/libc++/../../contrib/libc++/include/iterator:346:0,
>>>                from /usr/src/lib/libc++/../../contrib/libc++/include/memory:606,
>>>                from /usr/src/lib/libc++/../../contrib/libc++/include/algorithm:628,
>>>                from /usr/src/lib/libc++/../../contrib/libc++/src/algorithm.cpp:10:
>>> /usr/src/lib/libc++/../../contrib/libc++/include/iosfwd:176:14: error: 'mbstate_t' was not declared in this scope
>>> typedef fpos<mbstate_t>    streampos;
>>>             ^
> This is hopefully fixed by r300873 now.  Can you please verify?
> -Dimitry

buildworld/buildkernel started, based on -r300875 for powerpc64 under/on powerpc64 FreeBSD via lang/powerpc-xtoolchain-gcc as the so-called "cross compiler". If it completes successfully it takes about 8 hours for what I normally include in such builds.

I've also started a clang-based buildworld for powerpc (non-64) under powerpc FreeBSD as a cross check. (This environment involves work arounds, such as changes to signal delivery to avoid clang's code generation ABI violations in its stack handling. A clang based buildkernel would not complete so I would use a separate gcc 4.2.1 kernel build to get an overall system.)

Mark Millard
markmi at dsl-only.net

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