Date: Sat, 08 Feb 2014 19:12:09 -0500 From: Jim Ohlstein <jim@ohlste.in> To: Roger Leigh <rleigh@codelibre.net> Cc: David Chisnall <theraven@FreeBSD.org>, freebsd-stable@freebsd.org Subject: Re: 10.0 toolchain broken for C++11 code Message-ID: <52F6C7D9.20501@ohlste.in> In-Reply-To: <20140208233255.GA6282@amys.codelibre.net> References: <20140208233255.GA6282@amys.codelibre.net>
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Hello,
On 2/8/14, 6:32 PM, Roger Leigh wrote:
> Hi folks,
>
> I'm new to using FreeBSD. I'm the author of the schroot(1) tool, and I've
> been porting it to FreeBSD using the new 10.0-RELEASE on amd64 and powerpc.
> The plan is to make it support jails and ZFS snapshots on FreeBSD systems.
> However, I've hit a blocker in that after fixing a few Linux-isms I've
> I've found that I can't actually link my code.
>
> This is a minimal testcase:
>
> % cat test.cpp
> #include <typeinfo>
>
> int main()
> {
> const std::type_info& t = typeid(nullptr);
> }
>
> % CC -std=c++11 -o test test.cpp
> /tmp/test-OoDHHT.o: In function `main':
> test.cpp:(.text+0xd): undefined reference to `_ZTIDn'
> CC: error: linker command failed with exit code 1 (use -v to see invocation)
>
> See also:
> standards/185663
> https://github.com/pathscale/libcxxrt/issues/16
The fix was committed to head (260553) on 1/11/14 and was supposed to be
MFC'd in one week. See
http://svnweb.freebsd.org/base?view=revision&revision=260553. I don't
see that it's happened as of r261643.
I have cc'd David Chisnall. Perhaps he can address it.
>
> Being unfamiliar with FreeBSD my question is really, what sort of timescale
> is typical for fixing this type of issue? At least for my code, the
> toolchain is basically unusable until this is fixed, and I don't think
> there's a workaround for it. If it gets fixed in -STABLE, is it possible
> to selectively cherry-pick this somehow, or would I need to switch to
> -STABLE wholesale? Is there an expected date for 10.1 to be released?
Probably a little while. 10.0-RELEASE was just finalized last moonth. If
there's going to be an 8.5-RELEASE it will probably be next. Otherwise,
9.3-RELASE will probably be next.
--
Jim Ohlstein
"Never argue with a fool, onlookers may not be able to tell the
difference." - Mark Twain
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