December 2010 - Boost-users

[boost.filesystem3] ensuring a path has a \ or / on the end
by Sean Farrow 29 Dec '10

29 Dec '10

Hi: I'm writing some c++ code (using win32 api functions) and need to ensure that the boost::filesystem::path has a backslash on the end. For example the path: C:\test should beoutput as c:\test\ Does boost::filesystem have a method to ensure this is the case? Cheers Sean.

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Build Bjam
by Christer Borgqvist 29 Dec '10

29 Dec '10

Hello, I have RAD Studio XE, try to build bjam using boost_1_44_0\tools\jam\src\build.bat and get the following errors ### ### Using 'borland' toolset. ### Z:\boost_1_44_0\tools\jam\src>if exist bootstrap rd /S /Q bootstrap Z:\boost_1_44_0\tools\jam\src>md bootstrap Z:\boost_1_44_0\tools\jam\src>bcc32 -WC -w- -q -IC:\Program\Embarcadero\RAD Stud io\8.0\bin\..\Include -LC:\Program\Embarcadero\RAD Studio\8.0\bin\..\Lib /DNT -n bootstrap -ejam0 command.c compile.c debug.c execnt.c expand.c filent.c glob.c hash.c hdrmacro.c headers.c jam.c jambase.c jamgram.c lists.c make.c make1.c new str.c option.c output.c parse.c pathunix.c regexp.c rules.c scan.c search.c subs t.c timestamp.c variable.c modules.c strings.c filesys.c builtins.c md5.c pwd.c class.c w32_getreg.c native.c modules/set.c modules/path.c modules/regex.c modul es/property-set.c modules/sequence.c modules/order.c Error E2194: Could not find file 'Studio\8.0\bin\..\Include.cpp' command.c: Error E2209 jam.h 404: Unable to open include file 'sys/file.h' Error E2209 jam.h 413: Unable to open include file 'unistd.h' *** 2 errors in Compile *** compile.c: Error E2209 jam.h 404: Unable to open include file 'sys/file.h' Error E2209 jam.h 413: Unable to open include file 'unistd.h' *** 2 errors in Compile *** debug.c: Error E2209 jam.h 404: Unable to open include file 'sys/file.h' Error E2209 jam.h 413: Unable to open include file 'unistd.h' *** 2 errors in Compile *** execnt.c: Error E2209 jam.h 404: Unable to open include file 'sys/file.h' Error E2209 jam.h 413: Unable to open include file 'unistd.h' *** 2 errors in Compile *** expand.c: Error E2209 jam.h 404: Unable to open include file 'sys/file.h' Error E2209 jam.h 413: Unable to open include file 'unistd.h' *** 2 errors in Compile *** filent.c: Error E2209 jam.h 404: Unable to open include file 'sys/file.h' Error E2209 jam.h 413: Unable to open include file 'unistd.h' *** 2 errors in Compile *** glob.c: Error E2209 jam.h 404: Unable to open include file 'sys/file.h' Error E2209 jam.h 413: Unable to open include file 'unistd.h' *** 2 errors in Compile *** hash.c: Error E2209 jam.h 404: Unable to open include file 'sys/file.h' Error E2209 jam.h 413: Unable to open include file 'unistd.h' *** 2 errors in Compile *** hdrmacro.c: Error E2209 jam.h 404: Unable to open include file 'sys/file.h' Error E2209 jam.h 413: Unable to open include file 'unistd.h' *** 2 errors in Compile *** headers.c: Error E2209 jam.h 404: Unable to open include file 'sys/file.h' Error E2209 jam.h 413: Unable to open include file 'unistd.h' *** 2 errors in Compile *** jam.c: Error E2209 jam.h 404: Unable to open include file 'sys/file.h' Error E2209 jam.h 413: Unable to open include file 'unistd.h' *** 2 errors in Compile *** jambase.c: jamgram.c: Error E2209 jam.h 404: Unable to open include file 'sys/file.h' Error E2209 jam.h 413: Unable to open include file 'unistd.h' *** 2 errors in Compile *** lists.c: Error E2209 jam.h 404: Unable to open include file 'sys/file.h' Error E2209 jam.h 413: Unable to open include file 'unistd.h' *** 2 errors in Compile *** make.c: Error E2209 jam.h 404: Unable to open include file 'sys/file.h' Error E2209 jam.h 413: Unable to open include file 'unistd.h' *** 2 errors in Compile *** make1.c: Error E2209 jam.h 404: Unable to open include file 'sys/file.h' Error E2209 jam.h 413: Unable to open include file 'unistd.h' Error E2209 make1.c 70: Unable to open include file 'unistd.h' *** 3 errors in Compile *** newstr.c: Error E2209 jam.h 404: Unable to open include file 'sys/file.h' Error E2209 jam.h 413: Unable to open include file 'unistd.h' *** 2 errors in Compile *** option.c: Error E2209 jam.h 404: Unable to open include file 'sys/file.h' Error E2209 jam.h 413: Unable to open include file 'unistd.h' *** 2 errors in Compile *** output.c: Error E2209 jam.h 404: Unable to open include file 'sys/file.h' Error E2209 jam.h 413: Unable to open include file 'unistd.h' *** 2 errors in Compile *** parse.c: Error E2209 jam.h 404: Unable to open include file 'sys/file.h' Error E2209 jam.h 413: Unable to open include file 'unistd.h' *** 2 errors in Compile *** pathunix.c: Error E2209 jam.h 404: Unable to open include file 'sys/file.h' Error E2209 jam.h 413: Unable to open include file 'unistd.h' Error E2209 pathunix.c 22: Unable to open include file 'unistd.h' *** 3 errors in Compile *** regexp.c: Error E2209 jam.h 404: Unable to open include file 'sys/file.h' Error E2209 jam.h 413: Unable to open include file 'unistd.h' *** 2 errors in Compile *** rules.c: Error E2209 jam.h 404: Unable to open include file 'sys/file.h' Error E2209 jam.h 413: Unable to open include file 'unistd.h' *** 2 errors in Compile *** scan.c: Error E2209 jam.h 404: Unable to open include file 'sys/file.h' Error E2209 jam.h 413: Unable to open include file 'unistd.h' *** 2 errors in Compile *** search.c: Error E2209 jam.h 404: Unable to open include file 'sys/file.h' Error E2209 jam.h 413: Unable to open include file 'unistd.h' *** 2 errors in Compile *** subst.c: Error E2209 jam.h 404: Unable to open include file 'sys/file.h' Error E2209 jam.h 413: Unable to open include file 'unistd.h' *** 2 errors in Compile *** timestamp.c: Error E2209 jam.h 404: Unable to open include file 'sys/file.h' Error E2209 jam.h 413: Unable to open include file 'unistd.h' *** 2 errors in Compile *** variable.c: Error E2209 jam.h 404: Unable to open include file 'sys/file.h' Error E2209 jam.h 413: Unable to open include file 'unistd.h' *** 2 errors in Compile *** modules.c: Error E2209 jam.h 404: Unable to open include file 'sys/file.h' Error E2209 jam.h 413: Unable to open include file 'unistd.h' *** 2 errors in Compile *** strings.c: Error E2209 jam.h 404: Unable to open include file 'sys/file.h' Error E2209 jam.h 413: Unable to open include file 'unistd.h' *** 2 errors in Compile *** filesys.c: Error E2209 jam.h 404: Unable to open include file 'sys/file.h' Error E2209 jam.h 413: Unable to open include file 'unistd.h' *** 2 errors in Compile *** builtins.c: Error E2209 jam.h 404: Unable to open include file 'sys/file.h' Error E2209 jam.h 413: Unable to open include file 'unistd.h' *** 2 errors in Compile *** md5.c: pwd.c: Error E2209 jam.h 404: Unable to open include file 'sys/file.h' Error E2209 jam.h 413: Unable to open include file 'unistd.h' Error E2209 pwd.c 19: Unable to open include file 'unistd.h' *** 3 errors in Compile *** class.c: Error E2209 jam.h 404: Unable to open include file 'sys/file.h' Error E2209 jam.h 413: Unable to open include file 'unistd.h' *** 2 errors in Compile *** w32_getreg.c: Error E2209 jam.h 404: Unable to open include file 'sys/file.h' Error E2209 jam.h 413: Unable to open include file 'unistd.h' *** 2 errors in Compile *** native.c: Error E2209 jam.h 404: Unable to open include file 'sys/file.h' Error E2209 jam.h 413: Unable to open include file 'unistd.h' *** 2 errors in Compile *** modules/set.c: Error E2209 modules/../jam.h 404: Unable to open include file 'sys/file.h' Error E2209 modules/../jam.h 413: Unable to open include file 'unistd.h' *** 2 errors in Compile *** modules/path.c: Error E2209 modules/../jam.h 404: Unable to open include file 'sys/file.h' Error E2209 modules/../jam.h 413: Unable to open include file 'unistd.h' *** 2 errors in Compile *** modules/regex.c: Error E2209 modules/../jam.h 404: Unable to open include file 'sys/file.h' Error E2209 modules/../jam.h 413: Unable to open include file 'unistd.h' *** 2 errors in Compile *** modules/property-set.c: Error E2209 modules/../jam.h 404: Unable to open include file 'sys/file.h' Error E2209 modules/../jam.h 413: Unable to open include file 'unistd.h' *** 2 errors in Compile *** modules/sequence.c: Error E2209 modules/../jam.h 404: Unable to open include file 'sys/file.h' Error E2209 modules/../jam.h 413: Unable to open include file 'unistd.h' *** 2 errors in Compile *** modules/order.c: Error E2209 modules/../jam.h 404: Unable to open include file 'sys/file.h' Error E2209 modules/../jam.h 413: Unable to open include file 'unistd.h' *** 2 errors in Compile *** I have done a search for Include.cpp, sys/file.h and unistd.h but can`t find them. Appreciate any help, Christer

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Boost examples
by derleader __ 29 Dec '10

29 Dec '10

Hi, I'm new to Boost and I'm new C++ developer. I'm looking for examples how to write application divided into modules using Boost. Is there already done example? I need to see how to write C++ module. Regards Peter

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Boost.Python Compile Error(s) (GCC via MinGW-w64)
by Joshua Boyce 29 Dec '10

29 Dec '10

Hey all. I'm working on a project which currently only compiles under MSVC. I wish to port it to compile under GCC via MinGW-w64 also, however I've hit a brick-wall with a slew of compile errors I'm getting when using Boost.Python in my project. I'm not quite sure who's "fault" this problem is... Mine? Boost? GCC? libstdc++? MinGW-w64? Something else? I'm using TDM-GCC 4.5.1. http://tdm-gcc.tdragon.net/ Anyway, here is an example build output: http://raptorfactor.privatepaste.com/54e19acdc1 Ignore the errors in the 'MMHelper' project to do with exception routines, they are something else that I already know the cause and solution for. The problem I'm referring to is this one: gcc.compile.c++ Scripting\bin\gcc-mingw-4.5.1\debug\address-model-32\link-static\MemSandbox\Main.o In file included from c:\mingw64\bin\../lib/gcc/x86_64-w64-mingw32/4.5.1/include/c++/cmath:629:0, from c:\mingw64\bin\../lib/gcc/x86_64-w64-mingw32/4.5.1/include/c++/random:38, from c:\mingw64\bin\../lib/gcc/x86_64-w64-mingw32/4.5.1/include/c++/bits/stl_algo.h:66, from c:\mingw64\bin\../lib/gcc/x86_64-w64-mingw32/4.5.1/include/c++/algorithm:63, from E:\Code\Boost/boost/function/detail/prologue.hpp:13, from E:\Code\Boost/boost/function/function_template.hpp:13, from E:\Code\Boost/boost/function/detail/maybe_include.hpp:13, from E:\Code\Boost/boost/function/function0.hpp:11, from E:\Code\Boost/boost/python/errors.hpp:13, from E:\Code\Boost/boost/python/handle.hpp:11, from E:\Code\Boost/boost/python/args_fwd.hpp:10, from E:\Code\Boost/boost/python/args.hpp:10, from E:\Code\Boost/boost/python.hpp:11, from Scripting\MemSandbox\Main.cpp:38: c:\mingw64\bin\../lib/gcc/x86_64-w64-mingw32/4.5.1/include/c++/tr1_impl/cmath:203:11: error: '::hypot' has not been declared "g++" -ftemplate-depth-128 -O0 -fno-inline -w -g -m32 -std=c++0x -DBOOST_FILESYSTEM_VERSION=3 -DBOOST_PYTHON_STATIC_LIB -DBOOST_SYSTEM_STATIC_LINK=1 -DBOOST_THREAD_USE_LIB=1 -DDATE_TIME_INLINE -DUNICODE -D_UNICODE -Dnullptr=NULL -I"C:\Python27\Include" -I"E:\Code\Boost" -I"Common" -I"Dependencies" -I"Dependencies\BeaEngine" -I"Memory" -c -o "Scripting\bin\gcc-mingw-4.5.1\debug\address-model-32\link-static\MemSandbox\Main.o" "Scripting\MemSandbox\Main.cpp" ...failed gcc.compile.c++ Scripting\bin\gcc-mingw-4.5.1\debug\address-model-32\link-static\MemSandbox\Main.o... I'm at a loss as to how to fix this. I'm suspecting it's a MinGW problem, but I'm unable to find anybody else who has had or is having the same problem... I'm using Boost.Build as my build system. Relevant Jamfiles can be found here: http://code.google.com/p/hadesmem/source/browse/trunk/Jamroot http://code.google.com/p/hadesmem/source/browse/trunk/Common/Jamfile.v2 http://code.google.com/p/hadesmem/source/browse/trunk/Dependencies/Jamfile.… http://code.google.com/p/hadesmem/source/browse/trunk/HadesMem/Jamfile.v2 http://code.google.com/p/hadesmem/source/browse/trunk/Memory/Jamfile.v2 http://code.google.com/p/hadesmem/source/browse/trunk/Scripting/Jamfile.v2 Build command-line(s) here: http://code.google.com/p/hadesmem/source/browse/trunk/Build_Debug_AMD64_GCC… http://code.google.com/p/hadesmem/source/browse/trunk/Build_Debug_IA32_GCC.… http://code.google.com/p/hadesmem/source/browse/trunk/Build_Release_AMD64_G… http://code.google.com/p/hadesmem/source/browse/trunk/Build_Release_IA32_GC… If anyone could shed some light as to what's going wrong here and how I might fix it I'd really appreciate it. Thanks in advance.

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Re: [Boost-users] Suggestion to the packaging of boost libraries
by Taworn T. 28 Dec '10

28 Dec '10

@Klaim > I guess you mean the libraries that are not domain-specific but more like > language library extension? Yes Klaim, you are right. As I say (write) before, I'm not native English so sometime I cannot find right words to use. And what your opinion about this? Regards, Taworn T.

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Re: [Boost-users] Suggestion to the packaging of boost libraries
by Taworn T. 28 Dec '10

28 Dec '10

@Ray > I think that the definition of ?frequent-use? continuously changes as one uses >the library and encounters/learns more and more useful tools. I would vote > >that the packaging remains as it is. Please change the word "frequently-used" to "language-extension/domain-specific" as Klaim said. > If one wants only specific headers, I think there was a discussion many moons >ago about a tool which would extract the ?used? headers for minimizing > a final >project footprint. That call bcp. @Mike Jackson > That tool is "bcp" which is part of the standard boost source download. You > can use it to extract a subset of boost for your project or maybe to turn > into a sub-part of your project. What I find amusing is that in order to get > shared_ptr<> you end up getting something like 3MB worth of source files. Yes, quite big. :) I remember someone say that because there are many header files need by shared_ptr but the size won't go up too high if you add something, say regex. My point is not about definition of "frequently used". It about boost is quite big (huh, the word "big" is also quite subjective to people opinions -_-), and is there a way to reduce distribution size. And separating package is one of the way I can think. Regards, Taworn T.

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Collecting boost multi-index meta data
by Gokulakannan Somasundaram 28 Dec '10

28 Dec '10

Hi, Say i have a boost::tuple / MPL Sequence, on which i have created a multi-index. Is it possible for me collect all the attribute numbers on which i have declared the IndexSpecifierList( the one passed as template parameter to boost::multi_index::indexed_by ) ? Thanks, Gokul.

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[Proto] MPL Stuff in Calc1 and Calc2
by Hossein Haeri 27 Dec '10

27 Dec '10

Dear all, Do I get it correctly that the MPL stuff (headers and namespaces) are not needed for Calc1 and Calc2 in the Examples section of Proto documentation? TIA,--Hossein

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Re: [Boost-users] Suggestion to the packaging of boost libraries
by Taworn T. 27 Dec '10

27 Dec '10

> Hi, > > Just courious. But how do you define what the frequently used > libraries are? > > Regards, > chenwj Thank for the question. I think the word "frequently-use" is quite ambiguous. And everyone works might be difference. I my opinion, smart_ptr, regex, tr1 are something that should exists in standard C++ library, like many modern languages today. But of course, if this concept is accepted by boost community. The decision about "frequently-used-libraries" must be decided by boost developer team. Regards, Taworn T.

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ambiguity between std::begin/end and boost::begin/end in gcc 4.6
by Nathan Ridge 27 Dec '10

27 Dec '10

The following code fails to compile with a development build of gcc 4.6: #include <boost/range/adaptor/reversed.hpp> #include <vector> int main() { std::vector<int> v; for (int i : v | boost::adaptors::reversed); return 0; } The errors are: reversed.cpp: In function âint main()â: reversed.cpp:16:39: error: call of overloaded âbegin(boost::range_detail::reverse_range<std::vector<int> >&)â is ambiguous reversed.cpp:16:39: note: candidates are: /usr/local/lib/gcc/i686-pc-linux-gnu/4.6.0/../../../../include/c++/4.6.0/bits/range_access.h:56:5: note: decltype (__cont->begin()) std::begin(const _Container&) [with _Container = boost::range_detail::reverse_range<std::vector<int> >, decltype (__cont->begin()) = boost::reverse_iterator<__gnu_cxx::__normal_iterator<int*, std::vector<int> > >] /usr/local/lib/gcc/i686-pc-linux-gnu/4.6.0/../../../../include/c++/4.6.0/bits/range_access.h:46:5: note: decltype (__cont->begin()) std::begin(_Container&) [with _Container = boost::range_detail::reverse_range<std::vector<int> >, decltype (__cont->begin()) = boost::reverse_iterator<__gnu_cxx::__normal_iterator<int*, std::vector<int> > >] /home/nridge/lib/boost/boost/range/begin.hpp:107:61: note: typename boost::range_iterator<const T>::type boost::begin(const T&) [with T = boost::range_detail::reverse_range<std::vector<int> >, typename boost::range_iterator<const T>::type = boost::reverse_iterator<__gnu_cxx::__normal_iterator<int*, std::vector<int> > >] /home/nridge/lib/boost/boost/range/begin.hpp:96:55: note: typename boost::range_iterator<C>::type boost::begin(T&) [with T = boost::range_detail::reverse_range<std::vector<int> >, typename boost::range_iterator<C>::type = boost::reverse_iterator<__gnu_cxx::__normal_iterator<int*, std::vector<int> > >] reversed.cpp:16:39: error: call of overloaded âend(boost::range_detail::reverse_range<std::vector<int> >&)â is ambiguous reversed.cpp:16:39: note: candidates are: /usr/local/lib/gcc/i686-pc-linux-gnu/4.6.0/../../../../include/c++/4.6.0/bits/range_access.h:76:5: note: decltype (__cont->end()) std::end(const _Container&) [with _Container = boost::range_detail::reverse_range<std::vector<int> >, decltype (__cont->end()) = boost::reverse_iterator<__gnu_cxx::__normal_iterator<int*, std::vector<int> > >] /usr/local/lib/gcc/i686-pc-linux-gnu/4.6.0/../../../../include/c++/4.6.0/bits/range_access.h:66:5: note: decltype (__cont->end()) std::end(_Container&) [with _Container = boost::range_detail::reverse_range<std::vector<int> >, decltype (__cont->end()) = boost::reverse_iterator<__gnu_cxx::__normal_iterator<int*, std::vector<int> > >] /home/nridge/lib/boost/boost/range/end.hpp:103:61: note: typename boost::range_iterator<const T>::type boost::end(const T&) [with T = boost::range_detail::reverse_range<std::vector<int> >, typename boost::range_iterator<const T>::type = boost::reverse_iterator<__gnu_cxx::__normal_iterator<int*, std::vector<int> > >] /home/nridge/lib/boost/boost/range/end.hpp:92:55: note: typename boost::range_iterator<C>::type boost::end(T&) [with T = boost::range_detail::reverse_range<std::vector<int> >, typename boost::range_iterator<C>::type = boost::reverse_iterator<__gnu_cxx::__normal_iterator<int*, std::vector<int> > >] The problem is caused by an ambiguity between std::begin/end (new in C++0x) and boost::begin/end. I've found this bug: https://svn.boost.org/trac/boost/ticket/4099 and this thread: http://groups.google.com/group/boost-devel-archive/browse_thread/thread/f97… which mention similar issues, but neither of them seem to address/fix the issue in Boost.Range. Regards, Nate.

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