December 2012 - Boost - lists.boost.org

Problems with building quickbook docs
by Andrey Semashev 22 Feb '13

22 Feb '13

Hi, I'm having problems with building quickbook docs for my library. I have the using quickbook ; as well as doxygen, xsltproc and boostbook in my ~/user-config.jam. When I run: bjam -j 2 release link=static libs/log/doc I get the following error: .../boost-release/tools/build/v2/build/generators.jam:978: in try-one-generator-really *** argument error * rule object(generator)(a)60.run ( project name ? : property-set : sources + ) * called with: ( object(project-target)@1010 filters_reference-xml : object(property-set)@1387 : ) * missing argument sources .../boost-release/tools/build/v2/build/generators.jam:370:see definition of rule 'object(generator)(a)60.run' being called .../boost-release/tools/build/v2/build/generators.jam:1040: in try-one-generator .../boost-release/tools/build/v2/build/generators.jam:1254: in construct-really .../boost-release/tools/build/v2/build/generators.jam:1338: in generators.construct .../boost-release/tools/build/v2/build/targets.jam:1495: in construct .../boost-release/tools/build/v2/build/targets.jam:1298: in object(typed-target)(a)1058.generate .../boost-release/tools/build/v2/build/targets.jam:732: in generate-really .../boost-release/tools/build/v2/build/targets.jam:704: in object(main-target)(a)1164.generate .../boost-release/tools/build/v2/build/targets.jam:848: in targets.generate-from-reference .../boost-release/tools/build/v2/build/targets.jam:1217: in generate-dependencies .../boost-release/tools/build/v2/build/targets.jam:1269: in object(typed-target)(a)1061.generate .../boost-release/tools/build/v2/build/targets.jam:732: in generate-really .../boost-release/tools/build/v2/build/targets.jam:704: in object(main-target)(a)1165.generate .../boost-release/tools/build/v2/build/targets.jam:848: in targets.generate-from-reference .../boost-release/tools/build/v2/build/targets.jam:1217: in generate-dependencies .../boost-release/tools/build/v2/build/targets.jam:1269: in object(typed-target)(a)1062.generate .../boost-release/tools/build/v2/build/targets.jam:732: in generate-really .../boost-release/tools/build/v2/build/targets.jam:704: in object(main-target)(a)1166.generate .../boost-release/tools/build/v2/build/targets.jam:848: in targets.generate-from-reference .../boost-release/tools/build/v2/build/targets.jam:1217: in generate-dependencies .../boost-release/tools/build/v2/build/targets.jam:1269: in object(install-target-class)(a)1065.generate .../boost-release/tools/build/v2/build/targets.jam:732: in generate-really .../boost-release/tools/build/v2/build/targets.jam:704: in object(main-target)(a)1167.generate .../boost-release/tools/build/v2/build/targets.jam:848: in targets.generate-from-reference .../boost-release/tools/build/v2/build/targets.jam:1217: in generate-dependencies .../boost-release/tools/build/v2/build/targets.jam:1399: in basic-target.compute-usage-requirements .../boost-release/tools/build/v2/build/alias.jam:47: in compute-usage-requirements .../boost-release/tools/build/v2/build/targets.jam:1319: in object(alias-target-class)(a)1068.generate .../boost-release/tools/build/v2/build/targets.jam:732: in generate-really .../boost-release/tools/build/v2/build/targets.jam:704: in object(main-target)(a)1168.generate .../boost-release/tools/build/v2/build/targets.jam:258: in object(project-target)(a)1010.generate .../boost-release/tools/build/v2/build-system.jam:736: in load .../boost-release/tools/build/v2/kernel/modules.jam:283: in import .../boost-release/tools/build/v2/kernel/bootstrap.jam:142: in boost-build .../boost-release/boost-build.jam:17: in module scope index.html libs/index.html more/getting_started.html tools/index.html I'm using the release branch. Does anyone know what the problem could be?

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Release Managers: permission to merge small feature to release?
by Marshall Clow 19 Feb '13

19 Feb '13

I have a ticket <https://svn.boost.org/trac/boost/ticket/7652> asking for compile-time checked access to elements of a boost::array. I have implemented a specialization of boost::get (and for c++11, std::get) that does this, and it's been on the trunk and being tested for a couple weeks. This is technically not a bug fix, but new functionality, but I'd like to get it into the next release. So, I'm asking permission to merge to release. The change lists are 82083 (for the functionality), 82084 and 82102 (for the tests), and 82103 (for the docs) Thanks! -- Marshall

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[Lockfree] ringbuffer
by Rich E 17 Feb '13

17 Feb '13

First off, all Boost.Lockfree tests in trunk are passing for me on clang 4.0 on OS X, hurrah! Thank you Tim for working on this for so long... I'm running through the examples now, only with the outdated documentation as a guide (more than a couple years old). I cannot find the ringbuffer container - was it renamed or removed altogether during the review period? I notice spsc_queue acts awefully like a ringbuffer, and it's implementation contains many

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[fixed_point] Request for interest in a binary fixed point library
by Vicente J. Botet Escriba 02 Feb '13

02 Feb '13

Hi, the recent discussion on the MultiplePrecission Arithmetic library has show that some people has its ow fixed point library. Is there an interest in a Boost library having as base http://www.open-std.org/jtc1/sc22/wg21/docs/papers/2012/n3352.html? I have started a prototype http://svn.boost.org/svn/boost/sandbox/fixed_point (there is no doc yet but the basic goal is quite close to the N3352 C++ proposal). This prototype should allow you to play a little bit with. If yes, what would you like to be changed, added or improved in n3352? Next follows some design decisions that IMO need to be decided before hand. * Should integers and reals be represented by separated classes? * Should signed and unsigned be represented by separated classes? * Should the library use a specific representation for signed numbers (separated sign, 2-complement? Let the user choose? * Should the library provide arbitrary range and resolution and allocators? * Should the library be open to overflow and rounding or just implement some of the possible policies? and in this case which ones? * Should fixed_point be convertible to/from integer/float/double? * Could the result of an arithmetic operation have more range and resolution than his arguments? * Is there a need for a specific I/O? * is there a need for radix other than 2 (binary)? * Should the library implement the basic functions, or should it imperatively implement the C++11 math functions? Could a first version just forward to the c++11 math functions? * Should the library support just one of the know ways to name a fixed-point, a U(a,b), nQm, ...? Provide some ways to move from one to another? * Could expect the same/better performances respect to hand written code? * What should be the size used by a fixed_point instance? _fast? _least? Should the user be able to decide which approach is better for his needs? * Which should be the namespace? boost? boost/fixed_point? boost/binary_fixed_point? boost/bfp? ... * others you can think of. Please, replay if you are interested, have some experience in the domain, good ideas, .. Best regards, Vicente

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program_options: Support for open-end options
by ST 27 Jan '13

27 Jan '13

Hi, It would be great to implement support for open-end options, something like that: item_1 = 23 item_2 = 45 ... item_N = 465 The idea is to to be able to provide following input: configOptions.add_options() ("item_", value<int>(), "items"); now if add_options() sees a key that ends with a "_" it accepts all options with keys that start with item_, no matter what comes after it, and treat all of them as int . Nesting should also be possible - like this: "item_.subitem_.subsubitem_" (item_3.subitem_FOO.subsubitem_34 should be a valid option key). I can try to implement it, however only if it will have a chance to be merged into the boost library. Whom should I contact regarding this? Thank you, Simone

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[1.53.0] Release Notes
by Daniel James 26 Jan '13

26 Jan '13

Hello everyone, Please can you send me your library's release notes for 1.53. Or if you prefer you can add them yourself to: http://svn.boost.org/svn/boost/website/public_html/live/feed/history/boost_… thanks, Daniel

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Boost Support for Android and iOS
by rohit dhamija 25 Jan '13

25 Jan '13

Hi, Boost libraries are intended to be widely useful, and usable across a broad range of applications, but yet there is no official support available for Android and iOS 1. Is there any specific reason behind the same (like not optimized for embedded devices)? Or any other reason? 2. Are there (at all) any known issues if we use boost libraries for networking and thread synchronization for Smartphone application development ? Will it be a good idea to use BOOST ASIO for the same? I found some articles to compile boost but it would be great if we have some official links. FYI are the links found https://github.com/MysticTreeGames/Boost-for-Android http://www.codexperiments.com/android/2011/05/tips-tricks-building-boost-wi… RDX

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[variant] Basic rvalue and C++11 features support
by Antony Polukhin 20 Jan '13

20 Jan '13

Hi, There is a patch in ticket #7620 that adds some rvalue assignment operators and rvalue constructors for Boost.Variant library. I saw no activity from authors of Boost.Variant Eric Friedman and Itay Maman for a long time, so if there will be no objections, I'll commit patch to trunk in the middle of November. Any suggestions and comments are welcomed. -- Best regards, Antony Polukhin

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Changes to VS 2012 config
by Marshall Clow 17 Jan '13

17 Jan '13

Just so people know - I'm updating the Visual Studio configuration to more accurately reflect the capabilities of VS 2012. The first step was in http://svn.boost.org/trac/boost/changeset/81613 ; the next step will be to update the compiler features. If you see any problems, please let me know. -- Marshall

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[parameter] std proposal
by Lorenzo Caminiti 07 Jan '13

07 Jan '13

Hello all, Is there a C++ standard proposal for named parameter addition? I am looking for an "N-paper" for named parameters similar to N2081 for concepts, or N1962 for contracts. Thank you. -- Sent from my mobile device Lorenzo

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