Problem with gcc4.7 and call_once

[David Barto]

Start the install:
501_ sudo port install gcc48 +universal 
.
Snip
.
--->  Applying patches to libstdcxx
--->  Configuring libstdcxx
--->  Building libstdcxx
^C
502_ pushd /opt/local/.../_opt_local_var_macports_sources_rsync.macports.org_release_tarballs_ports_lang_gcc48/libstdcxx/work

503_ find . -name 'config.log'
./build/build-x86_64-apple-darwin12/fixincludes/config.log
./build/build-x86_64-apple-darwin12/libiberty/config.log
./build/config.log
./build/fixincludes/config.log
./build/gcc/config.log
./build/intl/config.log
./build/libbacktrace/config.log
./build/libcpp/config.log
./build/libdecnumber/config.log
./build/libiberty/config.log
524_ find . -name 'config.log' | xargs egrep _GLIBCXX_HAS_GTHREADS

On Aug 8, 2013, at 2:08 PM, Jeremy Lavergne <jeremy at lavergne.gotdns.org> wrote:

> Look inside 'port work ...'
> 
> "Brian D. McGrew" <brian at visionpro.com> wrote:
>> On 8/8/13 2:00 PM, "Jeremy Huddleston Sequoia" <jeremyhu at macports.org>
>> wrote:
>> 
>> 
>>> 
>>> On Aug 8, 2013, at 13:53, Jeremy Huddleston Sequoia
>>> <jeremyhu at macports.org> wrote:
>>> 
>>>> 
>>>> On Aug 8, 2013, at 12:58, David Barto <DBarto at visionpro.com> wrote:
>>>> 
>>>>> It appears that the following is missing from the configuration for
>>>>> libstdc++.
>>>>> 
>>>>> --enable-libstdcxx-threads
>>>>> Enable C++11 threads support. If not explicitly specified, the
>>>>> configure process enables it if possible. It defaults to 'off' on
>>>>> Solaris 9, where it would break symbol versioning. This option can
>>>>> change the library ABI.
>>>>> 
>>>>> Yes, it changes the ABI, however for std::call_once to work, I
>> think
>>>>> it is required. I don't think that the configuration process is
>> setting
>>>>> it by default.
>>>> 
>>>> What makes you say that?  It looks like it is to me:
>>> 
>>> ...
>>> 
>>>> Is your _GLIBCXX_HAS_GTHREADS undefined for some reason?  That
>> doesn't
>>>> make sense...
>>> 
>>> 
>>> Yeah, it looks fine to me:
>>> 
>>> libstdc++-v3/config.log:#define _GLIBCXX_HAS_GTHREADS 1
>>> 
>> 
>> Where is the config.log?  Over in
>> /opt/local/var/macports/software/libstdc++ all I find is a tar ball of
>> the
>> library???
>> 
>> 
>> 
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>