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Useful macro
by Pavel Syomin 31 Jul '07

31 Jul '07

Hello! I don't sure, that I choose right mail list for my ofer... So, don't beat me much... :) I often use such macro for testing function parameters: #define THROW_INVALID_ARGUMENT_IF_FAIL(expression) \ do { \ using std::invalid_argument; \ using std::string; \ \ if(!(expression)) \ throw invalid_argument(string(BOOST_CURRENT_FUNCTION) + \ " : Assertion '" #expression "' failed"); \ } while(false) I think, that this macro is very useful and can be part of <boost/utility.hpp>.

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Re: [Boost-users] [1.34.1]quesion about b uild the lib
by hongleij＠126.com 31 Jul '07

31 Jul '07

1. > bjam --help >in Boost's top-level dir will show the --libdir and the like. >The threading and the list are documented in the "Builtin features" >section of Boost.Build manual. i spent quit a few hours on bbv2 document to get learn how to configure bjam to build boost libs. for it quite differnt from 1.33. but when i get an example bjam toolset=gcc-4.1.2 variant=release runtime-link=static threading=multi --without-regex --build-dir=/c/temp/gcc/build --stagedir=/c/temp/gcc/dest stage help with the bjam --help and the example ,i compile and installed boost successesful. so, i think an example in the very "getting started" for the usage of bjam with config option is nesesary. especially for those people just want to build boost ,not want to use bjam to manage building process of their project . 2, i use --with option in the root dir of boost,get all correct libs for rebuild a special lib. libboost_iostreams-mgw41-mt-sd-1_34_1.a libboost_iostreams-mgw41-1_34_1.a libboost_iostreams-mgw41-d-1_34_1.a libboost_iostreams-mgw41-mt-1_34_1.a libboost_iostreams-mgw41-mt-d-1_34_1.a boost_iostreams-mgw41-1_34_1.dll boost_iostreams-mgw41-1_34_1.a boost_iostreams-mgw41-mt-1_34_1.dll boost_iostreams-mgw41-mt-1_34_1.a boost_iostreams-mgw41-mt-d-1_34_1.dll boost_iostreams-mgw41-mt-d-1_34_1.a boost_iostreams-mgw41-d-1_34_1.dll boost_iostreams-mgw41-d-1_34_1.a libboost_iostreams-mgw41-s-1_34_1.a libboost_iostreams-mgw41-sd-1_34_1.a libboost_iostreams-mgw41-mt-s-1_34_1.a but in the diretary boost_1_34_1\libs\iostreams\build i use bjam -a --toolset=gcc -sNO_ZLIB -sZLIB_BINARY=zdll -sZLIB_LIBPATH=C:\MinGW\lib -sZLIB_INCLUDE=C:\MinGW\include just got . boost_iostreams-mgw41-d-1_34_1.a boost_iostreams-mgw41-d-1_34_1.dll not all files. mingw will compile with libboost_iostreams-mgw41-d-1_34_1.a when using -lboost_iostreams-mgw41-d-1_34_1 3. if add "with MinGW,MSYS is not needed, see..." seems more clear. may your help iPod、万点巨额点卡、奖学金……海量奖品，想拿就拿！

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boost::regex_match throws exception
by mildaiv＠centrum.cz 31 Jul '07

31 Jul '07

I build boost::regex 1.34 using Borland BDS 2006. Simple regular expresions works fine, but I have problem with this regular expresion: ^[_a-zA-Z0-9-]+(\.[_a-zA-Z0-9-]+)*(a)[a-zA-Z0-9-]+(\.[a-zA-Z0-9-]+)+$ if a try to match it with any string longer then 22 bytes, regex throws exception. After some investigations i simplified regular expresion to ^[10+]*@$ and it still throws exception code I use: boost::regex e("^[10+]*@$"); boost::match_results<std::string::const_iterator> what; if(0 == boost::regex_match(input, what, e, boost::match_default | boost::match_partial)) // here function throw exception { throw std::runtime_error("Invalid data entered - this could not possibly be a valid card number"); } if(what[0].matched) { return true; } return false; Milan Bacik

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[1.34.1]quesion about build the lib
by hongleij＠126.com 31 Jul '07

31 Jul '07

as a person familiar with usage of boost,yet a green man of building the lib,i just want build the boost lib, . i have such questions: 1, how could i know the bjam config options for building boost, such as runtime-link ,threading ,--libdir, --includedir . should i must read the total bbv2 document? 2,after build the total boost lib and installed in mingw bjam --toolset=gcc --build-dir="E:\tmp" install --libdir="C:\MinGW\lib" --includedir="C:\MinGW\include" ,i want to build the iostream with zlib support and aready installed zlib in mingw. according to the libs/iostreams/doc/index.html, i use command bjam -a --toolset=gcc -sNO_ZLIB -sZLIB_BINARY=zdll -sZLIB_LIBPATH=C:\MinGW\lib -sZLIB_INCLUDE=C:\MinGW\include get boost_iostreams-mgw41-d-1_34_1.a boost_iostreams-mgw41-d-1_34_1.dll yet cannot get libboost_iostreams-mgw41-1_34_1.a libboost_iostreams-mgw41-d-1_34_1.a and so on. thus, i still cann't use zlib with boost::iostream. 3.we know we can build the boost in mingw without MSYS by using bjam,yet the get start does not give such information. A note to Cygwin and MinGW users If you plan to use your tools from the Windows command prompt, you're in the right place. If you plan to build from the Cygwin bash shell, you're actually running on a POSIX platform and should follow the instructions for getting started on Unix variants. Other command shells, such as MinGW's MSYS, are not supported―they may or may not work. i think how to build the boost libs using bjam should more well documented with so many configure options as possible.and how to build a perticular lib .1.33 did more than 1.34 many thanks iPod、万点巨额点卡、奖学金……海量奖品，想拿就拿！

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use PATH environment variable to search for libraries and include files on windows with mingw
by mattknox_ca 31 Jul '07

31 Jul '07

I don't see any obvious way to make bjam look in my PATH environment variable on windows (using gcc) when trying to locate header files and such. Is this possible? I have a directory "C:\c_libs" , which underneath I have two subfolders: "include" and "lib". I would like to modify user-config.jam (or if there is a more appropriate file to modify, please suggest) such that all my projects will always have access to the files in these folders without having to explictly reference these folders in each project's Jamroot file. Right now those folders are in my path environment variable, but I am open to the idea of creating explicity environment variables for each of those folders if that makes the task easier. But either way, I don't know how to do it. I banged my head against the keyboard for a few hours, and that didn't help. Any assistance is greatly appreciated. Thanks, - Matt -- View this message in context: http://www.nabble.com/use-PATH-environment-variable-to-search-for-libraries… Sent from the Boost - Users mailing list archive at Nabble.com.

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[Important] Reminder: CVS closes at 8am EDT tomorrow
by Douglas Gregor 30 Jul '07

30 Jul '07

This is a friendly reminder that Boost CVS will be shutting down permanently tomorrow, July 31st, at 8:00AM EDT. We will be converting the entire CVS repository to Subversion and expect to have the new Subversion repository up by the end of the day. For more information about the move to Subversion, see http://lists.boost.org/Archives/boost/2007/07/125148.php - Doug

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Using boost graphic lib (newbie)
by E B 30 Jul '07

30 Jul '07

I need to display a graph . Therefore I need to compute coordinate of each node (XY) and I plan to use BGL which provide algorithms for this purpose. After having looked at the test examples, I can not see how to implement a graph and run one of the layout algorithms. Does anybody have any experience on using BGL ? My node stuct is struct { string name; int x; int y; } and I have a vector of pair that contain the edges (vector<pair<node*,node*> >). I need to feed the node.x and node.y by using my own struct or another ones provided I get the X Y.

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Stupid ostringstream question
by Bill Lear 30 Jul '07

30 Jul '07

I have been searching the world in vain for a stringstream that works with a static buffer, and does not use the heap for memory allocation. We have an application that uses lots (12-16Gb) of memory. This puts a strain on the memory allocation routines, and when we want to create a small string we find that stringstream is very, very expensive, and sprintf into a static buffer much, much faster. Does boost provide anything like this? This actually came up when we realized that boost lexical_cast was using stringstream. When we replaced it with sprintf, our runtimes (when memory usage was very high) went down significantly. I should also point out that ANYTHING we did with dynamic memory at that point in the application (vector::push_back, for example) was hideously slow. I'd like to have the best of both worlds: the relatively clear syntax of the ostringstream inserters, working on a static buffer. Any help (code samples especially) appreciated. Bill

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[Boost.Build v2] Please help updating my build process from v1 (1.33.1) to v2 (1.34.1)
by Ames, Andreas (Andreas) 30 Jul '07

30 Jul '07

Hi all, as most of my colleagues insist on using Visual Studio, I have made a vcproj-wrapper around Boost.Build v1 for 1.33.1. The Jamfile looks like this: <Jamfile> project-root ; BOOST_LOCAL_STAGE_DIR ?= stage ; rule Pseudo ( target : libname : kind : variant : name_prefix ? ) { LIBNAME = $(libname) ; LIBKIND = $(kind) ; VARIANT = $(variant) ; REALNAME = $(name_prefix)$(LIBNAME) ; REALNAME ?= $(LIBNAME) ; NOTFILE $(target) ; DEPENDS $(target) : $(BOOST_LOCAL_STAGE_DIR)/$(LIBKIND)/$(LIBNAME)/$(VARIANT) ; stage $(BOOST_LOCAL_STAGE_DIR)/$(LIBKIND)/$(LIBNAME)/$(VARIANT) : <$(LIBKIND)>@boost/libs/$(LIBNAME)/build/boost_$(REALNAME) : <sysinclude>../../../boost <debug-symbols>on <debug-store>database <runtime-build>$(VARIANT) <runtime-link>dynamic <native-wchar_t>on : $(VARIANT) ; } Pseudo signals_lib_debug : signals : lib : debug ; Pseudo signals_lib_release : signals : lib : release ; </Jamfile> Furthermore I've created a Jamrules and a boost-build.jam like follows: <Jamrules> project boost : ../../../boost ; </Jamrules> <boost-build.jam> boost-build ../../../boost/tools/build/v1 ; </boost-build.jam> From my vcproj-files I can then just invoke bjam with the appropriate target and TOOLS-spec. 1) Unfortunately this doesn't work any longer with Boost.Build v2. After changing boost-build.jam in the obvious way, I just get bjam to display: error: Could not find parent for project at '.' error: Did not find Jamfile or project-root.jam in any parent directory. although the Jamfile is definitely there. The same thing happens, when I change the name to Jamfile.v2. 2) Skimming over the docs, I don't see Jamrules (which was previously needed) mentioned. Is it still necessary? 3) Finally, the build wrapper needs to be selfcontained (we get it from our repository), so site-config.jam and user-config.jam must not be mandatory. I just wonder, where to specify my 'using' rule(s) (like 'using msvc : 8.0 ;'). TIA, aa -- Andreas Ames | Programmer | Comergo GmbH | ames AT avaya DOT com Sitz der Gesellschaft: Stuttgart Registergericht: Amtsgericht Stuttgart - HRB 22107 Geschäftsführer: Andreas von Meyer zu Knonow, Udo Bühler, Thomas Kreikemeier

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[filesystem] Using path in shared library fault (?)
by Hughes, James 30 Jul '07

30 Jul '07

Hello all, I am using filesystem::path is a shared library called 'common', to initialise a static var. static boost::filesystem::path p("/home/me"); However, this give a seg fault (Linux, gcc) when the shared library is loaded. I am guessing this is an issue with the filesytem library not being loaded in at the time of the loading of 'common' (when the static var is initialised) - hence the seg fault. Its only an issue with the static variable, as all other uses of path in the library work fine. Is there any way round this? James This message (including any attachments) contains confidential and/or proprietary information intended only for the addressee. Any unauthorized disclosure, copying, distribution or reliance on the contents of this information is strictly prohibited and may constitute a violation of law. If you are not the intended recipient, please notify the sender immediately by responding to this e-mail, and delete the message from your system. If you have any questions about this e-mail please notify the sender immediately.

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