Boost Log to File not working

Question

I can't figure out why this example code doesn't work right. My compiler says that the functions being called are not members of the declared namespace. This is the example code for Boost log so why doesn't it work? What do I need to do?

I've already defined BOOST_LOG_DYN_LINK, and I have all of the headers included, that should need to be included. Additionally boost was installed via yum from the fedora repos, according to yum, the boost version is 1.55.0.

Example: http://www.boost.org/doc/libs/1_55_0/libs/log/example/doc/tutorial_file.cpp

Errors

main.cpp:33:5: error: ‘add_file_log’ is not a member of ‘logging’
     logging::add_file_log(
     ^
main.cpp:34:10: error: ‘file_name’ is not a member of ‘keywords’
          keywords::file_name = "sample_%N.log",                                        /*< file name pattern >*/
          ^
main.cpp:35:10: error: ‘rotation_size’ is not a member of ‘keywords’
          keywords::rotation_size = 10 * 1024 * 1024,                                   /*< rotate files every 10 MiB... >*/
          ^
main.cpp:36:10: error: ‘time_based_rotation’ is not a member of ‘keywords’
          keywords::time_based_rotation = sinks::file::rotation_at_time_point(0, 0, 0), /*< ...or at midnight >*/
          ^
main.cpp:36:49: error: ‘sinks::file’ has not been declared
          keywords::time_based_rotation = sinks::file::rotation_at_time_point(0, 0, 0), /*< ...or at midnight >*/

Code

#include <boost/log/core.hpp>
#include <boost/log/trivial.hpp>
#include <boost/log/expressions.hpp>
#include <boost/log/sinks/text_file_backend.hpp>
#include <boost/log/utility/setup/file.hpp>
#include <boost/log/utility/setup/common_attributes.hpp>
#include <boost/log/sources/severity_logger.hpp>
#include <boost/log/sources/record_ostream.hpp>

namespace logging = boost::log;
namespace src = boost::log::sources;
namespace sinks = boost::log::sinks;
namespace keywords = boost::log::keywords;

void init()
{
    logging::add_file_log
    (
        keywords::file_name = "sample_%N.log",
        keywords::rotation_size = 10 * 1024 * 1024,
        keywords::time_based_rotation = sinks::file::rotation_at_time_point(0, 0, 0),
        keywords::format = "[%TimeStamp%]: %Message%"
    );

    logging::core::get()->set_filter
    (
        logging::trivial::severity >= logging::trivial::info
    );
}

Make invocation

g++ -c -DBOOST_LOG_DYN_LINK -o main.cpp.o main.cpp

Linker flags: -lboost_program_options -lboost_log -lboost_filesystem -lboost_system -lboost_thread -lpthread

Verbose Log: https://gist.github.com/HSchmale16/d4dd5656a47ce82c63b2

@TasosVogiatzoglou Added the linker flags and the compiler command for the failed file. — HSchmale, May 03 '15 at 19:25
strange. Can you show a debug/verbose output of gcc ? Maybe the include directories are not included ? — Tasos Vogiatzoglou, May 03 '15 at 19:53
@TasosVogiatzoglou I just added a link to the verbose log. Though I already checked if the include directories are being included. — HSchmale, May 03 '15 at 20:09
@zmbq Boost Version 1.55.0 I'll add that to the question as well — HSchmale, May 03 '15 at 20:12
@HSchmale Silly question but, have you installed boost-devel ? — Tasos Vogiatzoglou, May 03 '15 at 20:34
@TasosVogiatzoglou Yes, I did. Before even posting I ran `yum install boost*` and when that failed I ran the same command as a reinstall. The build still failed. — HSchmale, May 03 '15 at 20:37
@HSchmale Try executing $ ls /usr/include/boost. Do you get results back ? — Tasos Vogiatzoglou, May 03 '15 at 20:41
Let us [continue this discussion in chat](http://chat.stackoverflow.com/rooms/76833/discussion-between-tasos-vogiatzoglou-and-hschmale). — Tasos Vogiatzoglou, May 03 '15 at 20:54

score 1 · Accepted Answer · answered May 03 '15 at 22:00

1

Check your header files for anything missing and also include -lboost_log_setup to your compiler/linker invocation.

answered May 03 '15 at 22:00

Tasos Vogiatzoglou

2,393
12
16

score 0 · Answer 2 · answered May 03 '15 at 03:13

0

I can compile this with no errors, no changes to the code. Check your boost::log source to be sure you have what you expect to have. My guess is your boost files have been corrupted. Trust that this error indicates the function isn't found where the compiler is looking.

answered May 03 '15 at 03:13

Algonaut

349
4
7

I've checked for corruption, and that did not occur. I downloaded the boost headers directly from the fedora repos via `yum`, and I reinstalled all of boost and it still occurs – HSchmale May 03 '15 at 17:13
Try to see if the included code is actually what is intended to be included. You can run preprocessor on the code by passing -E instead of -c in the compiler command line and then see if the preprocessed output actually contains the referenced symbols. – Andrey Semashev May 04 '15 at 16:16

Boost Log to File not working

Errors

Code

Make invocation

2 Answers2