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ASIO: Support for SQPOLL in io_uring backend
by Cyan Reddish 15 Mar '23

15 Mar '23

Hi. I was wondering if anything like that is planned. I am also interested in other general io_uring options like setting affinity masks for IO worker threads.

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Boost Asio help
by Richard, Charles 01 Mar '23

01 Mar '23

Hi, I've been tasked with trying to figure out why we are getting an error in our log file, the error is "error: End of file". I'm still fairly new to doing real-world C++ development and I struggle with understanding why the code does what it does. The errors in our log file specifically are: 2023.02.20 08:45:49.470[UTC] [19626:140486796130176] TRACE - Process::CmdRunner::AsyncReadStdout<0x7fc594013b20> len = 0 2023.02.20 08:45:49.470[UTC] [19626:140486796130176] TRACE - Process::CmdRunner::AsyncReadStdout<0x7fc594013b20> error: End of file At a high level, my understanding is that we use Boost Asio to run python scripts where our C++ process will fork a new child process to run these python scripts. What I don't understand is why the code we have like the below was chosen to implement that functionality and to handle error handling. I've looked at some Asio boost tutorials but I still have gaps between our implementation and the Boost Asio tutorials and documentation. I'm also wondering why the a_errCode == boost::asio::error::eof is not seemingly catching the end of file. The code in the method CmdRunner::AsyncReadStdout does the following: void CmdRunner::AsyncReadStdout(boost::system::error_code a_errCode, size_t a_readSize) { DoLOG(TRACE, "Process::CmdRunner::%s<%p> len = %zu", __func__, this, a_readSize); if ( a_errCode ) { DoLOG(TRACE, "Process::CmdRunner::%s<%p> error: %s", __func__, this, a_errCode.message().c_str()) } if ( a_readSize > 0 ) { DoLOG(TRACE, "Process::CmdRunner::%s<%p> - read this: %zu bytes", __func__, this, a_readSize) _stdoutBufList.Copy(_stdoutReadBuf, a_readSize); // Call user callback to push out bytes Daemon::Service::DispatchEvent([this]() { _cbHandler(_cbCtxt, false); }); } else if ( a_errCode == boost::asio::error::eof ) { // Read done, call user callback function! DoLOG(TRACE, "Process::CmdRunner::%s<%p> - Child process (%d) STDOUT reached EOF", __func__, this, _childPid) _cmdDone = _eofStdout = true; _procStdout->close(); _procStderr->close(); Daemon::Service::DispatchEvent([this]() { _cbHandler(_cbCtxt, true); }); } else { // Async-read more, until EOF seen _procStdout->async_read_some(boost::asio::buffer(_stdoutReadBuf, PROC_READ_BUF_SIZE), [this](boost::system::error_code ec, std::size_t a_readSize) { AsyncReadStdout(ec, a_readSize); }); } } Any hints or specific links to look at to further clarify my understanding would be appreciated. Thanks! Chach Internal Use - Confidential

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Precompiled Windows ARM/ARM64 binaries
by Stephan Brunner 01 Mar '23

01 Mar '23

Hi, are there any plans to ship precompiled windows binaries for ARM and/or ARM64 at some time on SourceForge [1]? Currently only a x86 and a x64 build is available there. If not, I'll look into building my own version for those architectures. Thanks a lot! [1] https://sourceforge.net/projects/boost/files/boost-binaries/1.81.0/ -- Mit freundlichen Grüßen / Best regards Stephan Brunner, M.Sc. Matrix: @boomer41:boomer41.net PGP: 5FB325E81E548282D458A65114A30C9CE3AE4CE2

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Boost Libraries and Dropping C++ Language Support
by Glen Fernandes 23 Feb '23

23 Feb '23

*Boost library authors and maintainers are free to drop support for old C++ standards in their libraries, at any time. * This includes libraries that other Boost libraries depend on. It even includes core libraries like Boost.Core or Boost.Static_Assert. We ask that maintainers do the right thing by all our users (which may include other Boost libraries) by announcing a future breakage *at least two Boost releases in advance*. When that eventual release time arrives, if Boost libraries are broken in older standards modes due to another Boost library dropping support, it will not block the Boost release. This means that we do not need to announce "Boost is dropping C++03" because Boost doesn't "support C++03" now as it is. It means that you, maintainer of Boost.X, should realize that you are free to announce that "Boost.X is dropping C++XY in version 1.Z" as you see fit. Boost in its infancy thrived because its libraries were on the cutting edge. Boost libraries today should similarly not be confined simply because other Boost libraries have chosen to depend on them. Furthermore, as Boost release managers we support authors exercising this freedom, and do not intend to impose any restrictions on what language support they must maintain. We will add a page to the Boost website stating the above formally. -- The release team (Glen Fernandes, Marshall Clow)

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[iostreams] When plan to move to C++20
by Seyyed Soroosh Hosseinalipour 17 Feb '23

17 Feb '23

ITNOA I have question about the plan to migrate code base from C++03 to C++20 for iostreams library I think iostreams library have very more clean if using modern C++ features, such as Concept Did you have any plan about that? thanks

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Abwesenheitsnachricht: Re: [iostreams] When plan to move to C++20
by Sören Textor 17 Feb '23

17 Feb '23

Derzeit bin ich nicht im Hause Ihre E-Mail wird nicht weitergeleitet. In dringenden Fällen bitte support(a)ditec-gmbh.de oder Telefonhotline +49-6221-31698-110 oder die Zentrale +49-6221-31698-0 kontaktieren. Mit freundlichen Grüßen Dr. Sören Textor ----------------------------------------------- DiTEC Dr. Siegfried Kahlich & Dierk Langer GmbH Im Breitspiel 19 | 69126 Heidelberg | Germany Handelsregister | Mannheim | HRB 341229 Dieses Dokument ist vertraulich zu behandeln. Die Weitergabe, sowie Vervielfältigung, Verwertung und Mitteilung seines Inhalts ist nur mit unserer ausdrücklichen Genehmigung gestattet. Alle Rechte vorbehalten, insbesondere für den Fall der Schutzrechtsanmeldung. This document has to be treated confidentially. Its contents are not to be passed on, duplicated, exploited or disclosed without our express permission. All rights reserved, especially the right to apply for protective rights.

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boost serialization of non-POD 16bit float : Half
by Nicholas Yue 17 Feb '23

17 Feb '23

Hi, I am trying to serialize out the value of OpenEXR's Half type values. I came across mention that custom types requires something like the following ``` namespace boost { namespace serialization { template<class Archive> void serialize(Archive & ar, half & h, const unsigned int version) { ar & boost::serialization::make_nvp("value", h); } } // namespace serialization } // namespace boost ``` The code compiles but when I run it, it segfaults. Is boost serializer a suitable for such use case ? Cheers -- Nicholas Yue https://www.linkedin.com/in/nicholasyue/

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Unable to compile when using BOOST_DETAIL_SPINLOCK_INIT
by radiatejava 09 Feb '23

09 Feb '23

I have an existing code for an application that uses BOOST_DETAIL_SPINLOCK_INIT from boost/smart_ptr/detail/spinlock.hpp. It is all fine when using with boost ver 1.53. I am trying to migrate to boost ver 1.66 and now this compilation fails. To isolate the issue, I have a sample program: #include <iostream> #include <boost/smart_ptr/detail/spinlock.hpp> class BoostTest { public: BoostTest(int v): val(v), bLock(BOOST_DETAIL_SPINLOCK_INIT) { std::cout << "constructor called" << std::endl; } int getValue() { std::cout << "getValue() called" << std::endl; return val; } private: int val; boost::detail::spinlock bLock; }; int main() { std::cout << "starting test" << std::endl; BoostTest bt(10); std::cout << "value now " << bt.getValue() << std::endl; } With ver 1.66, it now gives me the error. Why this error after upgrade to 1.66? How do I correct it? $ g++ -std=c++11 -I/data/hdd/code/mgmt/common/external/boost/ifc/dist/include -c boosttest.cc boosttest.cc: In constructor 'BoostTest::BoostTest(int)': boosttest.cc:6:63: error: use of deleted function 'boost::detail::spinlock::spinlock(boost::detail::spinlock&&)' BoostTest(int v): val(v), bLock(BOOST_DETAIL_SPINLOCK_INIT) { ^ In file included from /data/hdd/code/mgmt/common/external/boost/ifc/dist/include/boost/smart_ptr/detail/spinlock.hpp:47:0, from boosttest.cc:2: /data/hdd/code/mgmt/common/external/boost/ifc/dist/include/boost/smart_ptr/detail/spinlock_std_atomic.hpp:27:7: note: 'boost::detail::spinlock::spinlock(boost::detail::spinlock&&)' is implicitly deleted because the default definition would be ill-formed: class spinlock ^ /data/hdd/code/mgmt/common/external/boost/ifc/dist/include/boost/smart_ptr/detail/spinlock_std_atomic.hpp:27:7: error: use of deleted function 'std::atomic_flag::atomic_flag(const std::atomic_flag&)' In file included from /usr/include/c++/4.8/atomic:41:0, from /data/hdd/code/mgmt/common/external/boost/ifc/dist/include/boost/smart_ptr/detail/spinlock_std_atomic.hpp:19, from /data/hdd/code/mgmt/common/external/boost/ifc/dist/include/boost/smart_ptr/detail/spinlock.hpp:47, from boosttest.cc:2: /usr/include/c++/4.8/bits/atomic_base.h:275:5: error: declared here atomic_flag(const atomic_flag&) = delete; ^

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boost::process : write both stdout and stderr to the same stream ?
by Nicholas Yue 02 Feb '23

02 Feb '23

Hi, Is it possible to write both the stdout and stderr stream to the same output file/stream ? I am hoping to emulate ``` bp_stdout_stderr_app > output.txt 2>&1 ``` I tried doing something like that but get a runtime error Run output ``` terminate called after throwing an instance of 'boost::process::process_error' what(): dup3() failed: Bad file descriptor stdout : 000 stdout : 020 stdout : 040 Aborted (core dumped) ``` Source code ``` #include <boost/process.hpp> #include <iostream> using namespace boost::process; int main() { ipstream pipe_stream; child c("bp_stdout_stderr_app", std_out > pipe_stream, std_err > pipe_stream); std::string line; while (pipe_stream && std::getline(pipe_stream, line) && !line.empty()) std::cerr << line << std::endl; c.wait(); } ``` Cheers -- Nicholas Yue https://www.linkedin.com/in/nicholasyue/

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boost::log - tmp output log with decorated name ?
by Nicholas Yue 26 Jan '23

26 Jan '23

Hi, I plan to use boost::log for my C++ application logging needs. Does boost log have a convenient function for generating decorated filename in /tmp ? Something along the line of <app_name>_<timestamp>_<process_id>_<thread_id>.log This allows me to accumulate logs between runs to capture and compare. Cheers -- Nicholas Yue https://www.linkedin.com/in/nicholasyue/

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Fwd: [boost.interprocess] Are there pitfalls using managed_shared_memory?
by M L 10 Jan '23

10 Jan '23

Are there common pitfalls when using boost::interprocess::managed_shared_memory in order to share a variable in the following way (Cpp,Windows OS)? managed_shared_memory managed_shm(open_or_create, "my_shm", 1024); // Write int *i = managed_shm.construct<int>("Integer")(42); // Read std::pair<int*, std::size_t> p = managed_shm.find<int>("Integer"); - Is the shared memory deleted, when the application is stopped? - Do other programs or services can bear with this method without crashing? -is there a danger that shared memory could be accumulated with some kind of overflow? Question: what does one have to consider when using this method? Thanks for help.

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ASIO openSSL 3 support
by Ofer Lent 03 Jan '23

03 Jan '23

Hi, https://www.boost.org/users/history/version_1_80_0.html, "Asio" section, states: "Fixed compatibility with OpenSSL 3.0.4 and later." However, API-s which were deprecated in openSSL 3 still exist in boost_1_80_0.tar.gz<https://boostorg.jfrog.io/artifactory/main/release/1.80.0/source/boost_1_80…> --> boost/asio/ssl/impl/context.ipp: · RSA_free · DH_free · d2i_RSAPrivateKey_bio · PEM_read_bio_RSAPrivateKey · SSL_CTX_use_RSAPrivateKey · SSL_CTX_use_RSAPrivateKey_file · PEM_read_bio_DHparams Is there a plan to update them? BTW - It is possible to build an application with these deprecated API-s by using CFLAGS += -Wno-deprecated-declarations, but in my understanding it is not acceptable for FIPS compliance. Thanks! ------------------------------------------- This message is confidential. If you believe you received this message in error, please inform the sender and delete this message and all attachments.

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receive handler priority
by Alexander Carôt 28 Dec '22

28 Dec '22

Hello all, I have a classical receive handling structure for an asynchronous UDP socket: void receiver::receive(){ mySocket->async_receive_from( boost::asio::buffer(input, maxInputLength), senderEndpoint, boost::bind(&receiver::handleReceiveFrom, this, boost::asio::placeholders::error, boost::asio::placeholders::bytes_transferred)); } void receiver::handleReceiveFrom(const boost::system::error_code &error, size_t bytes_recvd) { // SPECIFIC CODE HERE AND FINAK CALL OF RECEIVE FUNCTION this->receive(); } Besides this my app works with several realtime threads I have assigned maximum priority to via: pthread_t threadID = (pthread_t) sendThread.native_handle(); struct sched_param param; int policy = SCHED_FIFO; int max = sched_get_priority_max(policy); param.sched_priority = max; pthread_setschedparam(threadID, policy, &param); Now I wonder in how far these realtime threads can have an impact on the performance of my receiver process: So far I assumed that the receiver handle code is executed immediately when a packet arrives at the NIC but I am not sure if other realtime threads might possibly delay this process when scheduled first. In other words: If we think of the receiver handling process as a thread that is triggered by incoming packets does this thread also have realtime capabilities that can suffer from competing processes ? Thanks in advance for clarification, best Alex -- http://www.carot.de Email : Alexander(a)Carot.de Tel.: +49 (0)177 5719797

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Abwesenheitsnachricht: boost::detail::spinlock problem
by Sören Textor 21 Dec '22

21 Dec '22

Derzeit bin ich nicht im Hause Ihre E-Mail wird nicht weitergeleitet. In dringenden Fällen bitte support(a)ditec-gmbh.de oder Telefonhotline +49-6221-31698-110 oder die Zentrale +49-6221-31698-0 kontaktieren. Mit freundlichen Grüßen Dr. Sören Textor ----------------------------------------------- DiTEC Dr. Siegfried Kahlich & Dierk Langer GmbH Im Breitspiel 19 | 69126 Heidelberg | Germany Handelsregister | Mannheim | HRB 341229 Dieses Dokument ist vertraulich zu behandeln. Die Weitergabe, sowie Vervielfältigung, Verwertung und Mitteilung seines Inhalts ist nur mit unserer ausdrücklichen Genehmigung gestattet. Alle Rechte vorbehalten, insbesondere für den Fall der Schutzrechtsanmeldung. This document has to be treated confidentially. Its contents are not to be passed on, duplicated, exploited or disclosed without our express permission. All rights reserved, especially the right to apply for protective rights.

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boost::detail::spinlock problem
by Cliff Diamond 21 Dec '22

21 Dec '22

Hi I'm using boost::detail::spinlock (boost-1.81) in code that compiles on both Visual Studio and gcc. I've hit a problem on the gcc build where the underlying spinlock member (v_) in spinlock_gcc_atomic.hpp isn't an atomic variable and isn't explicitly initialised (BOOST_DETAIL_SPINLOCK_INIT is defined, but there's no initializer and no constructor). v_ is declared as a non-atomic unsigned char and atomic operations use gcc intrinsics in that file. So v_ needs to be explicitly initialized to 0. When the lock method is called, it just spins as a result. This may be work-in-progress or am I misunderstanding? It seems such a glaring omission. The STL version of the spinlock uses std::atomic which does initialize v_ because it's wrapped up in the atomic template. Also there is a scoped_lock nested class within the boost spinlock. Why have an additional lock guard? Surely std::scoped_lock should be sufficient (or is it there just for testing - if so please comment it). I can overcome the problem (without modifying spinlock_gcc_atomic.hpp) by trying to acquire the lock when I create it and releasing it regardless. Is this a bug in that file? Thanks Cliff

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Boost IOStreams with CMake (CPMAddPackage) and Windows
by Richard Haney 17 Dec '22

17 Dec '22

Good afternoon, Hello everyone, I am new to this forum and new to *Boost* and *CMake* but eager to learn. So please forgive if this is a dumb question, but I am new to *Boost* and *CMake*. I have had success using *Boost.Iostreams* with Linux OS and CMake using *CPMPackageAdd* call for *boost_iostreams* library using compression and decompression with the following C++ code (the exact line of code that generates the error is shown below): #include <boost/iostreams/device/array.hpp> #include <boost/iostreams/device/back_inserter.hpp> #include <boost/iostreams/filtering_stream.hpp> #include <boost/iostreams/filter/zlib.hpp> #include <vector> #include <string> #include <iostream> #include <cstdlib> using namespace boost::iostreams; int main(int argc, char *argv[]) { // --------------------------------- // - COMPRESS DATA - // --------------------------------- std::vector<char> v; back_insert_device<std::vector<char>> snk{v}; filtering_ostream os; os.push(zlib_compressor{}); // This results in the Windows error zlib os.push(snk); os << "Boost" << std::flush; os.pop(); // --------------------------------- // - DECOMPRESS DATA - // --------------------------------- array_source src{v.data(), v.size()}; filtering_istream is; is.push(zlib_decompressor{}); is.push(src); std::string s; is >> s; std::cout << s << '\n'; return EXIT_SUCCESS; } However, when I try to use the same code on a Windows machine with MSVC compiler it generates errors explaining that* boost::iostreams::zlib is undefined *during linking. I am using *CMakeLists.txt* and would like to know if I can use *CMake* to properly build/compile for both Windows OS and Linux such that I can use the boost iostreams library with maybe an option in the *CPMAddPackage* call (maybe?). Is this possible? Can anyone point me in the correct direction with some simple example(s) if possible or links to existing solutions/hints to this same issue? I appreciate any assistance with this. Thank you for your time.

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[release] Boost 1.81.0
by Marshall Clow 14 Dec '22

14 Dec '22

Release 1.81.0 of the Boost C++ Libraries is now available. These open-source libraries work well with the C++ Standard Library, and are usable across a broad spectrum of applications. The Boost license encourages both commercial and non-commercial use. This release contains one new library and numerous enhancements and bug fixes for existing libraries. * URL: A library for parsing, modifying, and printing URLs using only C++11, from Vinnie Falco and Alan de Freitas. For details, including download links, see <http://www.boost.org/users/news/version_1.81.0> You can also download directly from: <https://boostorg.jfrog.io/artifactory/main/release/1.81.0/> To install this release on your system, see <http://www.boost.org/doc/libs/release/more/getting_started/index.html> Thanks to everyone who participated in this release. -- The Boost Release Team Marshall Clow, Glen Fernandes, Michael Caisse

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missing relaxed constexpr macros
by Gero Peterhoff 09 Dec '22

09 Dec '22

Hi John, i miss these for C++17/20/23 in boost/config. Can you retrofit this? thx Gero It could look like this: see https://en.cppreference.com/w/cpp/feature_test#__cpp_constexpr #if (__cpp_constexpr < 201703L) #define BOOST_NO_CXX17_CONSTEXPR #endif #if defined(BOOST_NO_CXX17_CONSTEXPR) #define BOOST_CXX17_CONSTEXPR #else #define BOOST_CXX17_CONSTEXPR constexpr #endif #if (__cpp_constexpr < 202002L) #define BOOST_NO_CXX20_CONSTEXPR #endif #if defined(BOOST_NO_CXX20_CONSTEXPR) #define BOOST_CXX20_CONSTEXPR #else #define BOOST_CXX20_CONSTEXPR constexpr #endif #if (__cpp_constexpr < 202207L) #define BOOST_NO_CXX23_CONSTEXPR #endif #if defined(BOOST_NO_CXX23_CONSTEXPR) #define BOOST_CXX23_CONSTEXPR #else #define BOOST_CXX23_CONSTEXPR constexpr #endif

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Does Boost.Multiprecision have a forwards declaration header?
by Ivan Matek 04 Dec '22

04 Dec '22

I presume not since I could not find it in docs, but decided to double check. My motivation is that I would like to limit heavy includes in my header(since intrinsics for avx512 files are 20k+ LOC on my system), but I would still like to use proper types in signature of my functions (since none of them take .args by value fwd declarations would be enough). So I was hoping for something like iosfwd. If it matters what part of library I am using: cpp_int.hpp P.S. I checked if telling compiler that I do not want arch support for avx512 would help, but it looks like avx512 intrinsics headers are included regardless, and even if it was not I would still like to not get into issues when compiling for HW that supports avx512. :) regards, Ivan

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[release] Boost 1.81.0 beta 1 released
by Marshall Clow 17 Nov '22

17 Nov '22

Boost release 1.81.0 beta 1 is now available at: https://boostorg.jfrog.io/artifactory/main/beta/1.81.0.beta1/source/ The SHA256 checksums are: 135f03965b50d05baae45f49e4b7f2f3c545ff956b4500342f8fb328b8207a90 boost_1_81_0_b1.tar.gz 736b041748d04c573d145613161cf2e54beb210c5511b67e6fac5510b82b6646 boost_1_81_0_b1.7z 941c568e7ac79aa448ac28c98a5ec391fd1317170953c487bcf977c6ee6061ce boost_1_81_0_b1.tar.bz2 c58d50acf58a98d4f5a7d891257d154efa50ca90312ca446586c7b4f9b7d3f14 boost_1_81_0_b1.zip Release notes (still need updates): https://www.boost.org/users/history/version_1_81_0.html Please try the beta and report any problems you encounter. Thanks to everyone who contributed to the release. -- Boost Release Team

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Partial serialization of a program
by Markus Lavin 06 Nov '22

06 Nov '22

I have a simulator type program where I want to be able to save (and load) the current simulation state using Boost serialization. The program, as with most programs, consists of a part that is static during run-time and a part that is dynamic. Ideally I would like to serialize only the dynamic part but this however raises the following problem. If a serialized object in the dynamic part contains a pointer to a non-seralized object in the static part then how do I deal with that. Clearly the address cannot be serialized since it may change between builds and even between runs (ASLR). The program does contain a 'registry' though where all relevant static objects are registered with a unique identifier. So question is would it somehow be possible to have Boost serialization use this registry to serialize the unique identifier instead of trying to serialize the entire object when one of those pointers are serialized? As far as I can tell the documentation does not mention this situation and extensive web searching yields very little as well. Any advice appreciated! -Markus

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Question about boost::multi_index emplace operations
by Pavel Vazharov 03 Nov '22

03 Nov '22

Hi there, Is there a way to emplace (key, value) in boost multi_index hashed index in such a way that the value is not moved/stolen if the key is already present? As far as I checked the implementation for emplace (and emplace_) the node is eagerly created and the key and the value are moved into the node and then the insertion operation takes place. If the insertion fails the node is destroyed but the outside value is lost/stolen in all cases. What I actually need is to create the value only if the key is not present, because the creation is expensive, and I'd like to avoid the find+emplace or insert empty value + modify call. (As far as I checked, the value can't be modified directly from the returned iterator because it's const and will need const_cast to work). I thought to use emplace with some machinery for lazy creation struct creator { operator value_type () { return ...; } // create the value lazily, on demand }; The creator is passed to emplace instead of the actual value. However, this doesn't help because the node is eagerly created and the above operator is always called. Thanks, Pavel.

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Re: [Boost-users] Cannot open boost lib file when building CLI dll
by Michael Pogue 28 Oct '22

28 Oct '22

> > I am trying to build a CLR dll file in VS22 and dotnet 6.0 that references >> boost. When I build, I get the following error. >> LNK1104 cannot open file 'libboost_program_options-vc142-mt-x64-1_76.lib' >> >> - This file does exist. >> - I have restarted to make sure the file isn't locked. >> - I have tried building as 32 and 64 bit. >> - I have tried 3 different versions of boost >> >> The problem is reproduced by this project: >> https://github.com/MajorMajor0/boostRepro. >> Any help would be much appreciated. >> >

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Norms methods
by General Magic - Teodora Bogdan 26 Oct '22

26 Oct '22

Hello, I was using the Boost library and I wanted to call the l2_norm() method from "boost/math/tools/norms.hpp", but is says that the namespace boost::math::tools doesn't contain l2_norm() method. When I looked into it, I saw that the namespaces at the beginning of the file were written"boost::math::tools" instead of "namespace boost { namespace math { namespace tools {...". Can this be fixed? Have a nice day, Teodora Bogdan CONFIDENTIALITY NOTICE: This e-mail and any attachments hereto may contain information that is privileged or confidential, and is intended for use only by the individual or entity to which it is addressed. Any disclosure, copying or distribution of the information by anyone else is strictly prohibited. If you have received this document in error, please notify us promptly by responding to this e-mail. DISCLAIMER: General Magic accepts no liability for the content of this email, or for the consequences of any actions taken on the basis of the information provided, unless that information is subsequently confirmed in writing and duly signed on behalf of General Magic by an authorized officer. Any views or opinions presented in this email are solely those of the author and do not necessarily represent those of General Magic. No employee or agent is authorized to conclude any binding agreement on behalf of General Magic with another party by email without express written confirmation which is duly signed on behalf of General Magic by an authorized officer. Thank you.

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Boost::serialization detection of Cxx Standard
by Georg Gast 14 Oct '22

14 Oct '22

Hi, I developed a patch and a test to serialize std::pmr::(w)strings in all 3 archive types. The test I set the requirement to <cxxstd>17. It works so far but when I compile the library for using it in my application the "hidden" functions behind "BOOST_NO_CXX17_MEMORY_RESOURCE" are not found by the linker as the define is set when the library is compiled. How to work around this? Bye Georg

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