March 2020 - Boost-users - lists.preview.boost.org

Boost.Numeric.Interval: Please specify rounding control mechanism
by Bastien Commelongue 01 Dec '20

01 Dec '20

Hello, I am building an app for IOS (ARM) and I had this issue while compiling: *Boost.Numeric.Interval: Please specify rounding control mechanism.* C99 version should be used in this case but __USE_ISOC99 is not defined. Modifying the condition with this code (using __cplusplus) fixed the issue: *boost/numeric/interval/hw_rounding.hpp(36)* *#if defined(BOOST_NUMERIC_INTERVAL_NO_HARDWARE) && (defined(__USE_ISOC99) || defined(__MSL__) || (defined __cplusplus && __cplusplus >= 201103L))# include <boost/numeric/interval/detail/c99_rounding_control.hpp>#endif* Let me know if I missed something or if you plan to integrate this modification in a next version. Cheers, Bastien Commelongue

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[Boost.Test] linking with shared lib (cannot find main)
by Andrew McFarlane 06 Apr '20

06 Apr '20

Hi all, I have been using Boost.Test for about a month now. Big fan so far, except for the atrocious compilation times, hence why I am moving toward using the shared library. using b2 to build and install Boost.Test's libs was simple enough, though after making the noted changes here: https://www.boost.org/doc/libs/1_72_0/libs/test/doc/html/boost_test/adv_sce… to customize the module's entry point, g++ cannot find the main executable: Undefined symbols for architecture x86_64: "_main", referenced from: implicit entry/start for main executable ld: symbol(s) not found for architecture x86_64 clang: error: linker command failed with exit code 1 (use -v to see invocation) make: *** [Guest_T] Error 1 I tried digging through the docs for more information, but I came up short. For more context, I have written unit tests for each of my classes. For example, if my classes were A, B, and C, I would have A_T.cpp, B_T.cpp, and C_T.cpp for unit tests. - Should each of the unit tests have their own main() function? (I would think not..) - If not, how do I instruct g++ to first compile main.cpp before attempting to compile anything else? If you are curious, here are the contents of my Makefile: PROG := main CC := g++ SDIR := ../src PKG_DIRS := $(shell ls $(SDIR)) CXXFLAGS = -v -Wall -std=c++11 -I$(SDIR_TEST) \ $(addprefix -I$(SDIR)/,$(PKG_DIRS)) -I$(BOOST_ROOT) \ -L$(BOOST_LIBS) -Wl,-rpath,$(BOOST_LIBS) -lboost_unit_test_framework ODIR_TEST = ./bin SDIR_TEST = ./src OUTDIR = ./execs ODIR = ../sim/bin TEST_EXEC_NAMES = $(notdir $(basename $(wildcard $(SDIR_TEST)/*.cpp))) $(OUTDIR)/$(PROG) : $(SDIR_TEST)/main.cpp $(CC) $(CXXFLAGS) -o $@ $< $(OUTDIR)/$(PROG) : $(TEST_EXEC_NAMES) $(CC) $(CXXFLAGS) -o $@ $^ % : $(SDIR_TEST)/%.cpp $(CC) $(CXXFLAGS) -o $(OUTDIR)/$@ $^ >From what I can tell, g++ is failing to find the main the executable because it is attempting to compile one of my unit test files first. This may or may not be the case; either way, I would appreciate some help or direction as to what I should read to learn more about this. Let me know if you need more info. Thanks in advance. - AJ

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[Boost.Test] duplicate symbol '_main' (manual test registration)
by Andrew McFarlane 06 Apr '20

06 Apr '20

Hi all, As the subject line suggests, I am attempting to manually employ a master test suite that registers several sub test suites. - Each subtest suite has its own header and translation unit. - Each header has a public "init_test_suite()" method and several private "test_case<number>()" methods, all of which are declared static. The public method creates a test suite, adds all the test cases for that translation unit, and adds the suite to the master test suite. This method is intended to be called from main.cpp. Here is a simplified version of my main.cpp: #define BOOST_TEST_DYN_LINK #define BOOST_TEST_NO_MAIN #include <boost/test/unit_test.hpp> #include "A.h" #include "B_T.h" #include "C_T.h" bool register_test_suites() { A_T::init_test_suite(); B_T::init_test_suite(); C_T::init_test_suite(); return 0; } int main(int argc, char *argv[], char *envp[]) { return boost::unit_test::unit_test_main(&register_test_suites, argc, argv); } Here's the issue. Despite the fact that I have defined BOOST_TEST_NO_MAIN, it appears that my compiler is still generating 2 objects files for the main executable entry: duplicate symbol 'register_test_suites()' in: /var/folders/bc/v2yqpsf96kn31tx8ybvy9gyw0000gn/T/main-58c6b3.o bin/main.o duplicate symbol '_main' in: /var/folders/bc/v2yqpsf96kn31tx8ybvy9gyw0000gn/T/main-58c6b3.o bin/main.o ld: 2 duplicate symbols for architecture x86_64 clang: error: linker command failed with exit code 1 (use -v to see invocation) make: *** [execs/main] Error 1 As you might be wondering, all of my test translation units define BOOST_TEST_DYN_LINK, and none of them define BOOST_TEST_MODULE, as the documentation suggests. I tried removing BOOST_TEST_NO_MAIN from main.cpp but that did not appear to do anything. I also tried removing the static and shared Boost.Unit lib files from my stage/lib directory and rebuilding only the shared version, and that did not work either. Also not that my g++ command does have the expected -L and -l flags for linking with Boost.Test: -L/usr/local/boost_1_72_0/stage/lib -lboost_unit_test_framework I am lost here. No idea why main() is being defined twice. Thanks in advance. - AJ

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BOOST_TEST_STRING_VIEW
by Leo Carreon 06 Apr '20

06 Apr '20

Hi Boost Users, Does anyone know what BOOST_TEST_STRING_VIEW is for? Kind regards, Leo

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Boost download links seems to be down
by andrews＠brutsoft.com 28 Mar '20

28 Mar '20

I'm getting 403 when trying to download boost from links at https://www.boost.org/users/history/version_1_72_0.html (https://www.boost.org/users/history/version_1_72_0.html) Is it just me? If not, how do we get this fixed? Thanks, Andrew

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[program_options] cmake error
by Jeanette C. 27 Mar '20

27 Mar '20

Hey hey, I get a cmake error about a non-existent directory from boost::program_options, namely /include . It only happens with the program_options library. Other libs included in the project are date_time, filesystem and system. A quick peak at /lib/cmake/boost_program_options-1.72.0/boost_program_options-config.cmake compared to the same file from date_time didn't give me any obvious hint though. But I'm not very familiar with cmake. The cmake line to find these Boost packages is this: find_package(Boost 1.58 REQUIRED COMPONENTS program_options filesystem date_time system) Here's the error message from my program's cmake: [...] Imported target "Boost::program_options" includes non-existent path "/include" in its INTERFACE_INCLUDE_DIRECTORIES. Possible reasons include: [...] Can someone reproduce the issue or suggest a fix? Best wishes and TIA, Jeanette -- * Website: http://juliencoder.de - for summer is a state of sound * Youtube: https://www.youtube.com/channel/UCMS4rfGrTwz8W7jhC1Jnv7g * SoundCloud: https://soundcloud.com/jeanette_c * Twitter: https://twitter.com/jeanette_c_s * Audiobombs: https://www.audiobombs.com/users/jeanette_c * GitHub: https://github.com/jeanette-c There's a girl in the mirror I wonder who she is Sometimes I think I know her Sometimes I really wish I did <3 (Britney Spears)

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[Boost.Graph] is it still active?
by Omar Khaled 27 Mar '20

27 Mar '20

Hey, I was wondering if the library is still active and open for refinements? I see that last **real** code written in it was committed to github repo from a year or so? are the maintainer still active? Thanks !!!

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Re: [Boost-users] Help with the steps needed to handle a large POST file upload
by Javier Sánchez 27 Mar '20

27 Mar '20

I'd suggest you take a look into the SmartUpload class in Java, I > understand it's a third party contribution. POST's that have attachments > have "parts" of their contents which are identified by their headers in the > MIME type. The logical thing to do is to loop through the several parts > and identify the one that you are expecting. If you are not exactly > looking after specific code I'd suggest you consult the RFC's related to > those types of contents in POST requests. There you'll have the key you > need. Regards. >

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Help with the steps needed to handle a large POST file upload (Boost Beast)
by Bill Moo 25 Mar '20

25 Mar '20

For anyone that has read my previous post, it will be evident from this request that I've not made any real progress of this, with my level of frustration rising, so I'm turning to the community again for assistance. Is anyone able to provide me with the steps I need to take to be able to download and save a 5 to 10 MB binary file submitted via a POST verb. I have tried many things but I simply can't get it to work, or work out the correct process. I'm not asking for code but the steps I need and where to take them in order to achieve my goal. Due to the size of the uploads I know I need to use a parser and I have search the internet for such an example to no avail so I would appreciate your help with this. The server I'm using is a single strand async implementation, derived from the Beast examples. -- Regards, Bill

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[gsoc] Example of exceptional project proposal
by Mateusz Loskot 24 Mar '20

24 Mar '20

...as it is not Dear students, if you aim to submit proposals like this, then please don't bother polluting the GSoC space with such rubbish. Please, let's display some minimum of professionalism and respect to each other. Best regards, -- Mateusz Loskot, http://mateusz.loskot.net

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