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[Proto] Recreating an expression
by christophe henry 01 Jul '09

01 Jul '09

Hi to all proto experts, I have a grammar whose only goal is to build a type: template <class Expr> struct ActionBuilder with an operator() which simply calls: proto::eval(Expr(),my_context); Unfortunately, I have an expression like: boost::proto::exprns_::expr<boost::proto::tag::plus,boost::proto::argsns_::list2<const A&,const B&> > And the compiler is unhappy about finding no appropriate default constructor (I suppose because of the references). deep_copy is probably not usable inside a grammar definition, so is there an easy way of getting rid of the references (if they are really the problem) or do I have to go and get my MPL canon? I am really just interested in having the recreated expression use a new instance of A and B, not the original ones. Thanks, Christophe _________________________________________________________________ Drag n’ drop—Get easy photo sharing with Windows Live™ Photos. http://www.microsoft.com/windows/windowslive/products/photos.aspx

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interprocess::message_queue thread safety
by Moritz 01 Jul '09

01 Jul '09

Hi everybody, I have a question concerning the interprocess::message_queue. Is the send(..) function thread safe? I have one message_queue and only one thread which is reading messages from the queue. But I have 'n' threads that are writing to the queue. Is there any synchronization mechanism needed to avoid unexpected behavior? Thank You Moritz

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[Locks/Mutex] choices between types
by Axel 01 Jul '09

01 Jul '09

Hello This post may not be well suited to this mailing list. I have some questions about the lockable concept provided in boost. There are many "lock" types, and many "mutex" types. My main question is then : when should I chose a given lock type rather a given mutex type ? Given the fact that some of lock types are not thread-safe, if only one thread needs locks, why should I use one of these lock types and why shouldnt I use some mutex type ? Finally, what were the goals of providing so much different ways to lock/unlock resources ? (I may not be aware of all the concepts related to secure resource access) Since the "lock" et "mutex" types provide ways to lock/unlock access to resources, why are not these types defined under the same name ? Are the concepts they implements much more different than I think ? Thanks Axel

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[tuple][hash] Hashing a tuple question
by Chris Hite 01 Jul '09

01 Jul '09

The code using fusion::fold is elegant, but you still have to define a functor before using it. Couldn't boost just define a default hasher for tuple like the default comparison <boost/tuple/tuple_comparison.hpp>? I've got a tuple with 3 ints in it. I can compare them for free. Why can't I just hash them for free? All we'd have to do is define a hash_value function for tuple that calls fold.

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Getting started with boost: Linker error on boost::system::get_system_category
by Alex Black 01 Jul '09

01 Jul '09

I'm just getting started with boost: - I'm using boost::asio - I'm on Vista x64, using Visual Studio 2008 SP1 - I built the x64 libs using bjam --address-mode=64 .... - I've got my code compiling (but not linking) - I got it pointed to the libs, so it finds the datetime, regex lib etc I get these errors: Error 84 error LNK2001: unresolved external symbol "class boost::system::error_category const & __cdecl boost::system::get_system_category(void)" (?get_system_category@system@boost@@YAAEBVerror_category@12@XZ) Error 85 error LNK2001: unresolved external symbol "class boost::system::error_category const & __cdecl boost::system::get_generic_category(void)" (?get_generic_category@system@boost@@YAAEBVerror_category@12@XZ) any tips? thx - Alex

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Problem of compiling boost::thread source code from Sun Studio
by Carfield Yim 01 Jul '09

01 Jul '09

Get the following error: "/home/ops/3rdParty/boost/1.38.0/install/include/boost-1_38/boost/thread/detail/thread.hpp", line 344: Error: boost::thread::thread(boost::thread&) is not accessible from boost::move(boost::detail::thread_move_t<boost::thread>). Do I need to upgrade the boost library for this ? -- View this message in context: http://www.nabble.com/Problem-of-compiling-boost%3A%3Athread-source-code-fr… Sent from the Boost - Users mailing list archive at Nabble.com.

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String, vector type with stack-allocated internal array (and dynamic array fallback)?
by Boris Dušek 01 Jul '09

01 Jul '09

Hello, for performance reasons, I would like not to have to have a std::wstring (1 allocation/1 deallocation of its character array) in one routine and instead have a wchar_t[MAXSIZE]. But I also would like my code to be correct for sizes bigger than MAXSIZE. Is there some type (in boost or elsewhere, preferable for both basic_string and vector) that defaults to stack-allocated array of some size (preferably configurable by a template parameter), and in case of overflow (i.e. push_back or insert when it's full), would allocate a dynamically-allocated array? This is how it works on MSVC with their STL basic_string implementation, just the array size is unconfigurable (16 bytes including null-terminating byte). I would obviously choose the MAXSIZE so that 99.9% of cases are handled by the stack-allocated array. Thanks, Boris

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Solved it - Re: How to set include path to boost root (when using bjam)?
by s seelenluft 01 Jul '09

01 Jul '09

> > sorry for this very basic question. Bjam complains about not finding the > boost libraries. This line > #include <boost/mathtools/minima.hpp> > in the header of my code triggers: > > error: boost/math/tools/minima.hpp: No such file or directory I have added: :<include>/usr/local/include/boost-1_39 as suggest on page 6 of: http://www.boost.org/doc/tools/build/doc/userman.pdf into the 'body' of exe 'options' in the Jamroot file inside my project. I had previously tried to add it just at the end that file. My problem was that I was provided with a working Jamroot file (by somebody who has since left my organisation) and thus I was able to work happily without knowing anything about the syntax in it. I was foraging through the boost documentation how to get started with it and only found that little bone: " you need a directory containing the boost/ subdirectory in your #includepath. " in: http://www.boost.org/doc/libs/1_39_0/more/getting_started/unix-variants.html but no documentation of how to actually add a include path (because that is probably obvious to anybody familiar with bjam). And, I am wondering whether I should rather add that line to my /usr/share/boost-build/user-config.jam file but the syntax probably is slightly different there. Markus

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How to set include path to boost root (when using bjam)?
by s seelenluft 01 Jul '09

01 Jul '09

Hi, sorry for this very basic question. Bjam complains about not finding the boost libraries. This line #include <boost/mathtools/minima.hpp> in the header of my code triggers: > error: boost/math/tools/minima.hpp: No such file or directory I have installed bjam, works fine (I was provided with an appropiate Jamroot file). I also have installed the boost libraries (via sudo bjam install --prefix=/usr/local/ --toolset=darwin), installation looks ok. I have added /usr/local/include/boost-1_39/** to the header search paths in Xcode, seems to work except for that '*snprintf' *error message (for which I already found some references). However, when invoking bjam from the command line, I somehow have to tell it the location of the boost root directory. I have found some references saying it should be set in the project's Jamrules file: http://boost.cppll.jp/HEAD/tools/build/v1/build_system.htm http://mail.python.org/pipermail/cplusplus-sig/2006-September/010917.html http://lists.boost.org/boost-users/2004/09/7734.php I have tried to add either of the following two lines to either to the end of my Jamroot file or to a separate Jamrules file (both in my project directory): path-global BOOST_ROOT : /usr/local/include/boost-1_39 ; project boost : /usr/local/include/boost-1_39 ; Adding it the Jamrules file does nothing. Adding them to the Jamroot file produces two different error messages: 'rule path-global unknown' and 'error: Invalid project attribute' I have also considered adding these to /usr/share/boost-build/user-config.jam. Just for kicks, I also added '/usr/local/include/boost-1_39' to my path. I know I have to set the include path somewhere (bjam cannot know what version I am using and thus cannot know the precise path). But I am not sure where exactly and don't really know what to add exactly. Thanks. Markus

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General: Vector UTF
by Etienne Philip Pretorius 01 Jul '09

01 Jul '09

Hello List, This is a general question regarding UTF-8/UTF-16/UTF-32 design implementation. I would appreciate and comments to this design. Create classes of utf8/utf16/utf32 who has a public base of std::vector<char>. Make all the std::vector<char> methods private (proxy like approach without the pointer) to avoid calling the public base directly from code without down casting (And the signatures should be diffrent anyway, see below). Re-implement common vector functions as public methods for unicode manipulation from the derived classes of utf* using boost::uint32_t as the code point type. Allow passing of down casted utf* classes into functions that will handle std::vector<char> types (boost::asio). This should also allow direct manipulation of the underlying data. Good/Bad/Terrible Idea? These classes should only be for the manipulation of code points and not for the extraction of characters (combining character classes etc). Etienne

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[asio] async_read and 100% CPU
by Etienne Philip Pretorius 01 Jul '09

01 Jul '09

Hello list, Could someone please shed some light on this subject. It seems that me read handler keeps on being called even when there has been no data transferred... Here is the accept handler that starts off the read handler (All methods are part of the same class, namely 'client'): /* Accept Handler */ void handle_accept( const boost::system::error_code& error ) { client* c; switch(error.value()) { case boost::system::posix_error::success: { c = new client(); socket.async_receive( boost::asio::buffer( buffer ),boost::bind( &client::handle_read, this, boost::asio::placeholders::error, boost::asio::placeholders::bytes_transferred ) ); break; } case boost::system::posix_error::interrupted: case boost::system::posix_error::connection_aborted: { c = this; break; } default: { throw error; } } acceptor.async_accept( c->socket, boost::bind( &client::handle_accept, c, boost::asio::placeholders::error ) ); }; And here is the read handler.... /* Read Handler */ void handle_read( const boost::system::error_code& error, std::size_t bytes_transferred ) { switch(error.value()) { case boost::system::posix_error::success: { if(bytes_transferred > 0) { std::copy( buffer.begin(), buffer.end(), std::back_insert_iterator<std::string>(data) ); break; } } case boost::system::posix_error::interrupted: { socket.async_receive( boost::asio::buffer( buffer ),boost::bind( &client::handle_read, this, boost::asio::placeholders::error, boost::asio::placeholders::bytes_transferred ) ); return; } default: { throw error; } } //TODO: parse contents.. }; Using epoll interface, as I am running Ubuntu Jaunty. Calling io_service.run() from the main thread. Thank you, Etienne Pretorius.

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Default table size of unordered map
by MeMooMeM 01 Jul '09

01 Jul '09

Hi, What is the default table size of unordered maps in boost? I am trying to figure out how scalable this function is. My guess is that boost assumes a default initial table length. If it is exceeded, it needs to re-create hashes for all entries to grow it, which is costly. I would like to find that threshold... Thanks so much! -- View this message in context: http://www.nabble.com/Default-table-size-of-unordered-map-tp24283133p242831… Sent from the Boost - Users mailing list archive at Nabble.com.

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Python embedding - vector problem
by Tyomich on the AIR 01 Jul '09

01 Jul '09

Hello! I'm currently embedding Python in C++ and now having some problems with std::vector. I used indexing suite to wrap it and work with it in Python like a Python list. But there is a problem: when I copy it in Python style (e.g. a[:] = b) it seems like it copies elements recursively, here is a log of copying: Copy constructor Copy constructor Destructor Copy constructor Copy constructor Copy constructor Destructor Destructor Copy constructor Copy constructor Copy constructor Copy constructor Destructor Destructor Destructor .. This is a real problem when the number of elements is more than 100000, because it takes a long time to finish. Is there anything to do with it? Regards, Chirkov Artyom

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[serialization] Multiple archives in same stream
by Chard 01 Jul '09

01 Jul '09

Pardon me if this issue has been discussed earlier, but is there a particular technical issue why multiple archives cannot be serialized to (or, specifically, de-serialized from) the same stream? (I'm still on 1.38, so slap me if this works with 1.39+). Given the following example: #include <boost/archive/text_oarchive.hpp> #include <boost/archive/text_iarchive.hpp> #include <boost/serialization/serialization.hpp> void test_ser_app() { { { std::ofstream file("ser.txt"); archive::text_oarchive arch(file); std::string s("Hello World"); arch & s; size_t pos = file.tellp(); // [1] } { std::ofstream file("ser.txt", std::ios::app | std::ios::ate); archive::text_oarchive arch(file); std::string s("Goodbye World"); arch & s; } } // [2] { std::string s1, s2; std::ifstream file("ser.txt"); { archive::text_iarchive arch(file); arch & s1; } size_t pos = file.tellg(); // [3] try { archive::text_iarchive arch(file); arch & s2; } catch (archive::archive_exception &e) { std::cout << e.what() << std::endl; } } } The stream position reported at [1] is (correctly) 42, and examination of the text file (at [2]) shows the two archives serialized okay. However, the stream position at [3] appears to be at the end of the stream. Does the serialization read in a big chunk, regardless of whether it will be processing it all? If I hack in a set stream position at [3], then the library quite happily reads the second archive. Is it possible to have the library leave the stream pointer at the correct end position?

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STLPort Install Before Building Boost 1.39.0
by biolaser 01 Jul '09

01 Jul '09

I'm on Windows XP SP3, msvc71 SP1, and I want to install STLport 5.2.1 before I install/build Boost 1.39.0. The STLport distribution install file (configure.bat) has two options I need help with: "--with-static-rtl" "-with-dynamic-rtl" Does Boost care whether I enable the static (libc.lib family) or whether I enable the dynamic (msvcrt.lib family) C/C++ library when linking with STLport? Then, there is the "-use-boost <boost install path>" option - I assume I should use this STLport option for Boost 1.39.0 - correct? Finally, is there anything I need to do in my building/installing of Boost itself to make sure it knows I have STLport installed? Thanks much! William Stroupe

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[asio] Thread safety
by Laurent Fert 01 Jul '09

01 Jul '09

Hi, I have a thread that runs io_service::run(). I have another thread that creates a timer and schedules it to fire later. Once the timer has been scheduled, the second thread forgets about it and everything is handled by the thread that runs the service. Is it safe to create/schedule a timer with an io_service from a thread while this services is being run in another thread? Thank you for your replies, Laurent

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[asio] ICMP protocol support
by Chris Miceli 01 Jul '09

01 Jul '09

-----BEGIN PGP SIGNED MESSAGE----- Hash: SHA512 I am attempting to use the ICMP protocol that is "off-the-shelf" in Boost.Asio, but am unable to get any use of it working. Following the code listed here: http://www.boost.org/doc/libs/1_36_0/doc/html/boost_asio/overview/networkin… I immediately run into problems. The DAYTIME protocol is defined to operate on TCP or UDP port 13. ICMP should be used for control messages, not data transmission. Trying to connect to a server supported DAYTIME with ICMP does not work using the code at the previously mentioned site, this error is returned: Service not found Which makes sense because this service is not defined for this protocol. My question is, what is the intended purpose of the current implementation of this protocol? If to use ICMP to tranfer data by using the payload, why? If to construct messages useful for writing a traceroute or ping utility, how would I do this? Has anyone used this library? Online there is a desire to use boost.Asio and ICMP to write ping using boost, but they all reach these same questions. I am appreciative of any help on this topic. - -Chris -----BEGIN PGP SIGNATURE----- Version: GnuPG v1.4.9 (GNU/Linux) Comment: Using GnuPG with Mozilla - http://enigmail.mozdev.org iEYEAREKAAYFAkpK05UACgkQS3i4IU3+Scsw2QCbBAQpHwqzTqIvn3hVunI6bnK9 Z6AAn0EfsRAwPbon8jJYVotEe6awn7Xy =/gWa -----END PGP SIGNATURE-----

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boost::bind with references
by Zachary Turner 01 Jul '09

01 Jul '09

I have a function defined as template<typename T> void foo(const T& x); and then I use boost::bind(foo, x); However, once the code is inside the body of foo, the addresses of x inside foo and the addresses of x when I called bind are different. So somehow a copy is being made. I can get around it by using boost::ref(), but is there a technical reason why it doesn't "just work" and pass it by reference?

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[TypeTraits] Is it possible to detect that type is not exist and use default type?
by Sakharuk, Vlad (GMI Development) 30 Jun '09

30 Jun '09

Here is example: class one { public: typedef someclass internal; }; class two { // No internal class }; class default_internal{ }; I would like to be able to write something if it possible: template<class T, class B = if_exist(T::internal) T::internal else default_internal > class proc { }; So I can use proc with both proc<one> One; proc<two> Two; without specifying derived type? Thanks! \/. -------------------------------------------------------------------------- This message w/attachments (message) may be privileged, confidential or proprietary, and if you are not an intended recipient, please notify the sender, do not use or share it and delete it. Unless specifically indicated, this message is not an offer to sell or a solicitation of any investment products or other financial product or service, an official confirmation of any transaction, or an official statement of Merrill Lynch. Subject to applicable law, Merrill Lynch may monitor, review and retain e-communications (EC) traveling through its networks/systems. The laws of the country of each sender/recipient may impact the handling of EC, and EC may be archived, supervised and produced in countries other than the country in which you are located. This message cannot be guaranteed to be secure or error-free. References to "Merrill Lynch" are references to any company in the Merrill Lynch & Co., Inc. group of companies, which are wholly-owned by Bank of America Corporation. Securities and Insurance Products: * Are Not FDIC Insured * Are Not Bank Guaranteed * May Lose Value * Are Not a Bank Deposit * Are Not a Condition to Any Banking Service or Activity * Are Not Insured by Any Federal Government Agency. Attachments that are part of this E-communication may have additional important disclosures and disclaimers, which you should read. This message is subject to terms available at the following link: http://www.ml.com/e-communications_terms/. By messaging with Merrill Lynch you consent to the foregoing. --------------------------------------------------------------------------

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Serialization of a universal data type
by Gokulakannan Somasundaram 30 Jun '09

30 Jun '09

Hi, I have started using Boost Serialization in one of my project and thanks for the library. I may be asking a question that might have got repeated, but i did my search on the forums but couldn't get the relevant answer. I have a data-type which is more like a universal datatype(unsigned long). Consider a 64 bit system and if the value to be stored in this datatype is greater than 8 bytes, then it is stored as value. If the value to be stored is greater than 8 bytes, then it is stored elsewhere and the pointer is stored here. By using other meta-data information, the data is extracted from this data-type. To be exact, i am referring to the datum implementation in open-source database postgresql. If i have to serialize this data-type, i need more info from other variables which store the metadata. The functions, i am trying to implement in Boost serialization are readDatum and _outDatum(similar to load/save). I don't see, how i can do that in Boost serialization, especially because of the signature of the load/save function. It only takes the version and the object to be serialized. How can i pass the other meta-data? I could always create a new data-type(say SerializableDatum) with all the required info, but then this data-type is being created only for the purpose of serialization. Is there any better way to achieve the same result? Thanks, Gokul.

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Using boost::date_time library with wince
by Matt Schuckmann 30 Jun '09

30 Jun '09

Does anybody have any experience with using boost::date_time (boost version 1.37 or later) with windows ce (aka Windows Mobile 5 or Windows Mobile 6) Specifically I'm trying to figure out the best way to get around the missing functions std::localtime() and std::gmtime(). Yes as hard as it is to believe Microsoft choose to leave these 2 simple functions out of wince, imagine that. I'm actually running into this because I'm trying to use boost::thread which uses mostly the header only parts of date_time. The problem crops up when c_time.hpp is included. Thanks in advance for any help Matt Schuckmann

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Using boost with windows mobile 5 or 6.
by Matt Schuckmann 30 Jun '09

30 Jun '09

I'm currently trying to use boost in my Windows Mobile 5/6 (aka WinCE) project and I'm having some real problems. Note the project is a port of a C++ library that is currently used in a Windows application and a Linux application. First let me say I'm using boost 1.37 and Visual Studio 2005 (VC 8), I'm not currently using STLPort. The specific libraries I'm trying to use are Thread, State machine and to some extent Date Time (mostly because Thread makes use of date_time) I'm not finding much of concrete info on how to go about doing thiss. The most help has come from the VeecoFTC regression build setup but that just got me to the point of building the boost library for the thread project. However, when I try to use thread in my project I run into problems specificly: * Wince does not implement std::localtime or std::gmtime which are used by the boost versions of localtime and gmtime in c_time.hpp. (Thread appears to depend on this via the date_time library) * Wince does not implement the standard library file locale. Most of the problems caused by this are solved be defining BOOST_NO_STD_LOCAL however the files compare.hpp and replace.hpp in boost/algorithm/string/ both don't respect the BOOST_NO_STD_LOCAL and they use std::locale a lot. Has anyone else gotten round these problems and if so what did you do? I've never been clear on why many people appear to be using STLPort with boost with winCE (or at least the VeecoFTC build is) is that something I should be doing? If so can I do it just for my WinCE builds? Does anybody know if I'd have more luck with boost 1.39 or even upgrading to Visual Studio 2008 (VC 9)? Thanks Matt Schuckmann

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[boost][graph] problems using reverse_graph adaptor
by Andrey Torba 30 Jun '09

30 Jun '09

I have a Graph type which satisfies concepts: boost::function_requires<boost::GraphConcept<Graph> >(); boost::function_requires<boost::IncidenceGraphConcept<Graph> >(); boost::function_requires<boost::BidirectionalGraphConcept<Graph> >(); boost::function_requires<boost::VertexListGraphConcept<Graph> >(); boost::function_requires<boost::AdjacencyGraphConcept<Graph> >(); when i make a reverse adaptor: boost::make_reverse_graph(g); i receive such errors: 'edges_size_type' : is not a member of 'boost::graph_traits<Graph>' 'edge_property_type' : is not a member of 'Graph' 'vertex_property_type' : is not a member of 'Graph' Why does reverse_graph requires edges_size_type? edges_size_type isn't in BidirectionalGraph, VertexListGraph, PropertyGraph. it is in EdgeListGraph. reverse_graph requires Graph to be `BidirectionalGraph and optionally VertexListGraph and PropertyGraph`. What does `optionally` mean? My graph is not a PropertyGraph. I want just revert edges. -- Regards, Andrey

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[Interprocess] Custom naming for the managed_external_buffer
by Thomas d'Erceville 30 Jun '09

30 Jun '09

Hello, I'm using a mapped file in order to share my objects between many processes and I already have my own kind of key to identify them. So instead of linking them to a <char *> in the function construct(), I would like to use my own type (providing convenient functions such as less(), operator==, ...) So I mean, instead of : MyObject * my_object = mapped_file.construct<MyObject>("object_name"); I want to known if there is a way to write something like : MyKey *object_key*(...) MyObject * my_object = mapped_file.construct<MyObject>(*object_key*); I'm taking a look at the section "Building custom indexes<http://www.boost.org/doc/libs/1_39_0/doc/html/interprocess/customizing_inte…>" but I am not sure to be able to solve my problem with that. Could someone confirm? Best regards, Thomas 2009/6/29 David Larsson <laserallan(a)gmail.com> > Hi! > I'm outputting the progress from an externally executed command line > application using the windows API call OutputDebugString. > This means that I need to convert all line breaking characters to flush > commands to make sure the text is outputted when a new line is received > rather than when some underlying structure finds it suitable to linebreak. > I've created a sink that writes to OutputDebugString and it works great, > however unless I manually insert lots of std::endl (or flushing some other > way) I won't get any output until the buffer is full. > > Is it possible to write an iostream filter that forces a flush on newlines > or is this something I need to handle before feeding data into my stream? > > /David > > > > _______________________________________________ > Boost-users mailing list > Boost-users(a)lists.boost.org > http://lists.boost.org/mailman/listinfo.cgi/boost-users >

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Boost Interprocess os_file_functions
by Pascal Kesseli 30 Jun '09

30 Jun '09

Hi everyone For a mutual exclusion on a SerialInterface class, I used a Boost Interprocess Mutex, which compiled on MinGW without any problems. Using the same code on my arm-linux-gcc cross compilation tool chain (Version 3.3.2) renders the following error: g++ -I"/home/othmarsen/Documents/Software/C++/MOXA/UC-7112/ewbmeter" -I"/home/othmarsen/Documents/Software/C++/MOXA/UC-7112/pss" -I/opt/c++/boost/boost_1_39_0 -O0 -g3 -Wall -c -fmessage-length=0 -MMD -MP -MF"Interface/MockSerialInterface.d" -MT"Interface/MockSerialInterface.d" -o"Interface/MockSerialInterface.o" "../Interface/MockSerialInterface.cpp" In file included from /opt/c++/boost/boost_1_39_0/boost/interprocess/sync/emulation/named_creation _functor.hpp:16, from /opt/c++/boost/boost_1_39_0/boost/interprocess/sync/named_mutex.hpp:22, from /home/othmarsen/Documents/Software/C++/MOXA/UC-7112/ewbmeter/ewbmeter/Interf ace/Interface.h:5, from /home/othmarsen/Documents/Software/C++/MOXA/UC-7112/ewbmeter/ewbmeter/Interf ace/SerialInterface.h:5, from ../Interface/MockSerialInterface.h:4, from ../Interface/MockSerialInterface.cpp:1: /opt/c++/boost/boost_1_39_0/boost/interprocess/detail/mpl.hpp:67: warning: all member functions in class `boost::interprocess::detail::is_convertible<T, U>' are private In file included from /opt/c++/boost/boost_1_39_0/boost/interprocess/sync/posix/semaphore_wrapper. hpp:17, from /opt/c++/boost/boost_1_39_0/boost/interprocess/sync/named_mutex.hpp:26, from /home/othmarsen/Documents/Software/C++/MOXA/UC-7112/ewbmeter/ewbmeter/Interf ace/Interface.h:5, from /home/othmarsen/Documents/Software/C++/MOXA/UC-7112/ewbmeter/ewbmeter/Interf ace/SerialInterface.h:5, from ../Interface/MockSerialInterface.h:4, from ../Interface/MockSerialInterface.cpp:1: /opt/c++/boost/boost_1_39_0/boost/interprocess/detail/os_file_functions.hpp: In function `bool boost::interprocess::detail::delete_subdirectories_recursive(const std::string&, const char*)': /opt/c++/boost/boost_1_39_0/boost/interprocess/detail/os_file_functions.hpp: 461: error: `::' does not have a class or union named `stat' Any ideas on that? Thanks and best regards Kessi

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