January 2015 - Boost - lists.preview.boost.org

[rational] has no maintainers
by Peter Dimov 23 Mar '15

23 Mar '15

Currently, nobody has write access to Boost.Rational, and I see a number of open pull requests (mostly by John Maddock) lingering. John, would you like write access to it so that you can apply your suggested changes?

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transforming ex. boost lib into C++11-only lib?
by Oliver Kowalke 23 Mar '15

23 Mar '15

Hello, is it permitted to transform an existing boost library into a C++11-only library? best, Oliver

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[test] boost.test owner unresponsive to persistent problems for multiple years
by legalize+jeeves＠mail.xmission.com 18 Mar '15

18 Mar '15

[Please do not mail me a copy of your followup] See <https://svn.boost.org/trac/boost/ticket/10888> and <http://stackoverflow.com/questions/5209625/boost-test-error-messages-are-no…> Both contain a fix for this. On stack overflow the proposed fix is literally a single line change. This has been a problem for about 5 years and these simple fixes don't make it into the library. I'm sorry, but IMO this just isn't acceptable behavior for an owner of a library. Four years ago the maintainer made a comment on stack overflow thread to file a ticket on trac and then simply dropped the issue there as far as I can tell. That isn't proactive behavior, particularly when the stack overflow thread contains the fix. I know what you're going to say "the trac ticket was just filed a few days ago", but that's simply me pushing hard on something that should have been fixed around 2010. The problem has been known FOR FIVE YEARS and is EASY TO FIX. -- "The Direct3D Graphics Pipeline" free book <http://tinyurl.com/d3d-pipeline> The Computer Graphics Museum <http://computergraphicsmuseum.org> The Terminals Wiki <http://terminals.classiccmp.org> Legalize Adulthood! (my blog) <http://legalizeadulthood.wordpress.com>

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[dynamic_bitset] Maintainer available?
by Riccardo Marcangelo 07 Mar '15

07 Mar '15

Hi Boost developers, Does anybody know if the maintainer of dynamic_bitset is available? I made some contributions to dynamic_bitset on GitHub last year but there doesn't appear to have been any activity in the repository for many months. My pop_back() commit was accepted into the 'develop' branch over 5 months ago and, despite passing tests, has yet to be merged to 'master'. I also implemented capacity(), reserve(), and shrink_to_fit() which have been sitting in a pull request waiting to go into 'develop' since November. It would be nice to get these into 1.58.0 if possible. Kind regards, Riccardo -- View this message in context: http://boost.2283326.n4.nabble.com/dynamic-bitset-Maintainer-available-tp46… Sent from the Boost - Dev mailing list archive at Nabble.com.

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[build] adding a rquirement for Cygwin only?
by Peter Dimov 05 Mar '15

05 Mar '15

Is it possible to add, for example, <threadapi>pthread to a project's requirements, but only for Cygwin? This works: <toolset>gcc,<target-os>windows:<threadapi>pthread but it also applies to MinGW. This only applies to MinGW: <toolset-gcc:flavor>mingw:<threadapi>pthread but Cygwin has no <flavor>. This: <toolset>gcc,<target-os>windows:<threadapi>pthread <toolset-gcc:flavor>mingw:-<threadapi>pthread doesn't work. There are references to <target-os>cygwin in gcc.jam, but <target-os> is actually 'windows'.

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[build] b2 headers broken?
by Eric Niebler 02 Mar '15

02 Mar '15

I just updated to the latest develop. I ran bootstrap, then nuked my boost directory and reran b2 headers. Worked fine. Then I changed directory to libs/proto/test and ran ../../../b2 mem_ptr to run a test. Here's what I get: f:\modular-boost\libs\proto\test>..\..\..\b2 mem_ptr Performing configuration checks - symlinks supported : no - junctions supported : yes - hardlinks supported : yes ...patience... ...patience... ...found 4951 targets... ...updating 441 targets... common.mkdir ..\..\..\bin.v2\libs common.mkdir ..\..\..\bin.v2\libs\proto common.mkdir ..\..\..\bin.v2\libs\proto\test common.mkdir ..\..\..\bin.v2\libs\proto\test\mem_ptr.test common.mkdir ..\..\..\bin.v2\libs\proto\test\mem_ptr.test\msvc-12.0 common.mkdir ..\..\..\bin.v2\libs\proto\test\mem_ptr.test\msvc-12.0\debug common.mkdir ..\..\..\bin.v2\libs\proto\test\mem_ptr.test\msvc-12.0\debug\link-static common.mkdir ..\..\..\bin.v2\libs\proto\test\mem_ptr.test\msvc-12.0\debug\link-static\threading-multi link.rm ..\..\..\boost\mpl common.mkdir ..\..\..\boost\mpl link.hardlink ..\..\..\boost\mpl\print.hpp Hardlink created for ..\..\..\boost\mpl\print.hpp <<===>> ..\..\mpl\include\boost\mpl\print.hpp <snip> link.rm ..\..\..\boost\numeric\conversion link.hardlink ..\..\..\boost\numeric\conversion\conversion_traits.hpp The system cannot find the path specified. if exist "..\..\..\boost\numeric\conversion\conversion_traits.hpp" del "..\..\..\boost\numeric\conversion\conversion _traits.hpp" mklink /H "..\..\..\boost\numeric\conversion\conversion_traits.hpp" "..\..\numeric\conversion\include\boost\numeric\ conversion\conversion_traits.hpp" ...failed link.hardlink ..\..\..\boost\numeric\conversion\conversion_traits.hpp... link.hardlink ..\..\..\boost\numeric\conversion\int_float_mixture_enum.hpp The system cannot find the path specified. For some reason, b2 thinks it needs to rerun b2 headers, but it does a crap job of it and dies. What's going on? Eric

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[filesystem] temp_directory_path() behavior on Windows
by Beman Dawes 20 Feb '15

20 Feb '15

temp_directory_path() on Windows is currently implemented by calling the Windows API GetTempPath() function. Ticket https://svn.boost.org/trac/boost/ticket/5300 points out that GetTempPath() does not work as expected for environmental variables longer than roughly 130 characters. I've added a test to Boost.Filesystem that verifies that boost::filesystem::temp_directory() is affected. The suggested fix is to use GetEnvironmentVariable to in effect implement GetTempPath() the way we would like it to work. That makes sense to me, so I looked up the specs for GetTempPath(): The GetTempPath function checks for the existence of environment variables in the following order and uses the first path found: 1. The path specified by the TMP environment variable. 2. The path specified by the TEMP environment variable. 3. The path specified by the USERPROFILE environment variable. 4. The Windows directory. (4) Makes me queasy. I suspect it will fail anyhow because of permissions errors, but I would prefer to have temp_directory_path() report an error if 1, 2, and 3 are not present. temp_directory_path() already reports an error if a path is found but it is not a directory. OTOH, excluding the Windows directory is a breaking change for anyone currently depending on that behavior, so I thought it best to ask for comments before charging ahead. Thoughts? --Beman

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[Review] Boost.Endian mini-review
by Joel FALCOU 19 Feb '15

19 Feb '15

The mini-review of Boost.Endian starts today and runs through Sunday, February 1. The library repository is available on GitHub at https://github.com/boostorg/endian The docs for the library can be viewed online at https://boostorg.github.io/endian/ The objective of the mini-review is to verify that the issues raised during the formal review have been addressed. Those issues are documented at https://boostorg.github.io/endian/mini_review_topics.html which also describes the resolution of each issue. Comments and suggestions unrelated to the mini-review issues are also welcome, but the key question the review manager needs your opinion on is this: Is the library ready to be added to Boost releases? -- Joel Falcou, Endian Review Manager

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[gsoc15] Attn: We need 2015 mentors and project ideas for Boost!
by Niall Douglas 12 Feb '15

12 Feb '15

Dear Boost community, We are now within one month of the beginning of Google Summer of Code 2015! Last year's GSoC furthered the continuing success of the Boost GSoC programme with the first ever Boost funded extension to a GSoC project (that being Boost.Hana by Louis Dionne mentored by Joel Falcou, congrats to both of them on passing an exceptionally tough selection process), and over $50,000 of Google funding brought to Boost in 2014. We also sent three representatives to last year's mentor summit, including one student whose entire expenses the Boost Steering Committee very generously covered. As part of filling in our application for 2015, we must supply to Google a list of potential GSoC mentors and potential GSoC projects for summer 2015. There are a number of changes to how we design project ideas for students this year intended to improve the GSoC experience for both students and mentors, so please examine the ideas page which outlines those changes at https://svn.boost.org/trac/boost/wiki/SoC2015 and if you have any questions or concerns about those changes, please ask now rather than just before the GSoC deadline. If you think yourself able to mentor a student doing some work on Boost this summer, *please* consider adding a description of the proposed work item and your name to the list. Last year we acquired eight slots from Google and had to disappoint two mentors and students, we hope with the improved selection process we can get back to the ten annual slots we once had. If you want to know more about mentoring a Google Summer of Code funded student work before you nominate yourself, please feel free to ask on the main Boost developers mailing list boost(a)lists.boost.org. Thank you in advance for your time. Niall Douglas (Boost Google Summer of Code admin) Boris Schäling (Boost Google Summer of Code admin) --- Boost C++ Libraries Google Summer of Code 2014 admin https://svn.boost.org/trac/boost/wiki/SoC2014

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[voronoi] Issue with boost::polygon::voronoi_diagram<> as class variable
by duke 08 Feb '15

08 Feb '15

For some reason when I have a voronoi_diagram as a class variable (which it needs to be in this case), I get this error on compile: Error 49 error C2248: 'boost::polygon::voronoi_diagram<T>::operator =' : cannot access private member declared in class 'boost::polygon::voronoi_diagram<T>' I'm new to C# so it may be something obvious. - George

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