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Solaris sparc always producing 32bit libs
by Manoj Jangid 02 Jun '11

02 Jun '11

Hi I am trying to build boost in Solaris sparc machine, its always produce 32bit libs. Here is the commend I am using ./bjam --build-dir=$HOME/boost_rel64 --with-thread --with-system --with-date_time --with-random link=shared --stagedir=$HOME/boost_rel64 --layout=tagged link=shared variant=release address-model=64 my compiler version CC -V CC: Sun C++ 5.8 2005/10/13 uname -a SunOS mjnew 5.10 Generic_118833-03 sun4u sparc SUNW,Sun-Fire-V890 How do I produce 64bit libs? Thanks

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Query about warning messages
by Leo Carreon 01 Jun '11

01 Jun '11

Hi, When I built Boost 1.45.0, 1.46.0 and 1.46.1 on Solaris, I noticed that there were a lot of warning messages. Are these warning messages benign? Regards, Leo

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Query on Boost 1.47.0
by Leo Carreon 01 Jun '11

01 Jun '11

Hi, Is support for stdcxx4 going to be included in Boost 1.47.0 for Solaris? If not, can you please include it. Regards, Leo

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[iostreams] Auto link iostreams but not external dependencies
by Sebastian Karlsson 01 Jun '11

01 Jun '11

It seems to be impossible to auto link iostreams but not external dependencies unless you want to link using defines. This matters to us as we use premake where one can reference a project dependency by its premake project id for automatic handling of linking on that end, and that feature does not work through defines.

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How to download latest Boost?
by The Novice Coder 01 Jun '11

01 Jun '11

I tried following the directions on the web site - http://www.boost.org/users/download/ Which states the following: > ACCESSING THE BOOST SUBVERSION REPOSITORY > > The Subversion repository can be accessed in several ways: > > * Anonymous, read-only access to the Boost Subversion repository is available at http://svn.boost.org/svn/boost [1]. To access the current Boost development code, for instance, one would check out from http://svn.boost.org/svn/boost/trunk [2]. For example, using the command-line svn, one might use: > > svn co http://svn.boost.org/svn/boost/trunk [3] boost-trunk > On Windows, TortoiseSVN [4] provides an > easy-to-use, graphical interface to Subversion. However it didn't work. It started to, it got part way through the download then asked for a password. Now that's all it does: > ~/boost $ svn co http://svn.boost.org/svn/boost/trunk boost-trunk > Authentication realm: Boost SVN repository Subversion Access > Password for 'user': > > svn: OPTIONS of 'http://svn.boost.org/svn/boost/trunk': authorization failed: Could not authenticate to server: rejected Basic challenge (http://svn.boost.org) What password is expected, and why is it not listed on the web page in the download instructions? http://www.boost.org/users/download/ Links: ------ [1] http://svn.boost.org/svn/boost [2] http://svn.boost.org/svn/boost/trunk [3] http://svn.boost.org/svn/boost/trunk [4] http://tortoisesvn.tigris.org/

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Issue with Multicast
by Andre Zeps 01 Jun '11

01 Jun '11

Hi, I've found some issue with the multicast examples of boost asio. It seems that the first received package after starting the receiver is always ignored. Is this a boost problem ?

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tokenizer
by asif saeed 01 Jun '11

01 Jun '11

Hi, Is boost tokenizer thread-safe? In an example in an online book, whose English translation link was provided a few days back, the tokenizer is created on stack. I have a hopeful presumption that the string operations it carries out are thread-safe. I need your help on this. Best regards, Asif

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Przemyslaw SLIWA is out of the office.
by przemyslaw.sliwa＠uk.bnpparibas.com 01 Jun '11

01 Jun '11

I will be out of the office starting 01/06/2011 and will not return until 02/06/2011. I will respond to your message when I return. ___________________________________________________________ This e-mail may contain confidential and/or privileged information. If you are not the intended recipient (or have received this e-mail in error) please notify the sender immediately and delete this e-mail. Any unauthorised copying, disclosure or distribution of the material in this e-mail is prohibited. Please refer to http://www.bnpparibas.co.uk/en/information/legal_information.asp?Code=ECAS-… for additional disclosures.

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[range] filtered dereferences underlying range elements twice
by Nathan Ridge 01 Jun '11

01 Jun '11

Hello, It seems that the 'filtered' adaptor dereferences elements of the underlying range twice if they pass the filter. This is illustrated in the following example, where a range is first transformed and then filtered: #include <iostream> #include <boost/range/adaptor/transformed.hpp> #include <boost/range/adaptor/filtered.hpp> #include <boost/range/algorithm/copy.hpp> int transform(int i) { std::cout << "calling transform() on " << i << "\n"; return i + 1; } bool filter(int i) { return i % 2 == 0; } int main() { int a[] = {1, 2, 3, 4, 5, 6, 7, 8}; int b[8]; boost::copy(a | boost::adaptors::transformed(transform) | boost::adaptors::filtered(filter), b); return 0; } The output is: calling transform() on 1 calling transform() on 1 calling transform() on 2 calling transform() on 3 calling transform() on 3 calling transform() on 4 calling transform() on 5 calling transform() on 5 calling transform() on 6 calling transform() on 7 calling transform() on 7 calling transform() on 8 As you can see, the transform function is called twice for elements that pass the filter. Can this be avoided? In my real use case, the transformation performs a database lookup, and it should not be done twice. Thanks, Nate.

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[Thread] this_tread::sleep won't compile with gcc, "no match for operator+"
by Alexey Malakhov 31 May '11

31 May '11

Hi! This is most probably a "newbie question", but I really don't see what exactly wrong I'm doing, so will appreciate any inputs. Basically, what I'm trying to do is: using namespace boost::posix_time; using namespace boost::this_thread; time_duration td = milliseconds(2000); sleep(&td); And it works ok with Visual Studio and Windows. Once I get it to linux and try to compile with gcc, this is what I get: g++ -c -Wall -I/home/gsed/boost/ main.cpp -o main.o In file included from /home/gsed/boost/boost/thread/thread.hpp:17:0, from includes.h:12, from main.cpp:1: /home/gsed/boost/boost/thread/pthread/thread_data.hpp: In function void boost::this_thread::sleep(const TimeDuration&) [with TimeDuration = boost::posix_time::time_duration*]: main.cpp:47:11: instantiated from here /home/gsed/boost/boost/thread/pthread/thread_data.hpp:138:13: error: no match for operator+ in boost::get_system_time() + rel_time /home/gsed/boost/boost/date_time/time.hpp:139:15: note: candidates are: time_type boost::date_time::base_time<T, time_system>::operator+(boost::date_time::base_time<T, time_system>::date_duration_type&) const [with T = boost::posix_time::ptime, time_system = boost::date_time::counted_time_system<boost::date_time::counted_time_rep<boost::posix_time::millisec_posix_time_system_config> >, time_type = boost::posix_time::ptime, boost::date_time::base_time<T, time_system>::date_duration_type = boost::gregorian::date_duration] /home/gsed/boost/boost/date_time/time.hpp:159:15: note: time_type boost::date_time::base_time<T, time_system>::operator+(boost::date_time::base_time<T, time_system>::time_duration_type&) const [with T = boost::posix_time::ptime, time_system = boost::date_time::counted_time_system<boost::date_time::counted_time_rep<boost::posix_time::millisec_posix_time_system_config> >, time_type = boost::posix_time::ptime, boost::date_time::base_time<T, time_system>::time_duration_type = boost::posix_time::time_duration] /home/gsed/boost/boost/date_time/posix_time/date_duration_operators.hpp:75:3: note: boost::posix_time::ptime boost::posix_time::operator+(const boost::posix_time::ptime&, const boost::gregorian::years&) /home/gsed/boost/boost/date_time/posix_time/date_duration_operators.hpp:31:3: note: boost::posix_time::ptime boost::posix_time::operator+(const boost::posix_time::ptime&, const boost::gregorian::months&) make: *** [main.o] Error 1 ie it's trying to perform a boost::posix_time::ptime + time_duration operation, but for some reason can't decide between operator+(boost::date_time::base_time<T, time_system>::date_duration_type&) and operator+(boost::date_time::base_time<T, time_system>::time_duration_type&) And I'm absolutely not sure why. Win version works well I guess because there's another include file used and the whole thing is arranged differently. Again, any inputs or advice are greatly appreciated. Thanks! -- Take care, Alexey Malakhov

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