Re: Boost Log 1.65.1 Linking Issue

From: Andrey Semashev (andrey.semashev_at_[hidden])
Date: 2020-09-15 17:07:04

On 9/15/20 8:02 PM, Andrey Semashev wrote:
> On 9/15/20 7:44 PM, Karmethia Thompson via Boost wrote:
>> Andrey thanks for your reply. I tried that as well without success. My
>> cmake file is below:
>>
>> set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -std=c++11")
>> add_definitions(-DBOOST_LOG_DYN_LINK=1)
>>
>> ## Common parameters.
>> # Set common path variables. (YOURS MAY BE DIFFERENT)
>> set(BOOST_ROOT "$ENV{BOOST_ROOT}")
>>
>> set(ARMADILLO_HOME "$ENV{ARMADILLO_ROOT}")
>> include_directories (${ARMADILLO_HOME}/include)
>> link_directories (${ARMADILLO_HOME}/lib64)
>> #SET(CMAKE_VERBOSE_MAKEFILE ON)
>>
>> # Set the path to Boost
>> #SET(Boost_USE_STATIC_LIBS ON)
>> #SET(Boost_USE_MULTITHREADED ON)
>> find_package (Boost COMPONENTS log log_setup system thread filesystem
>> date_time  REQUIRED)
>> include_directories (${Boost_INCLUDE_DIRS})
>> link_directories (${Boost_LIBRARY_DIRS})
>> #link_libraries(${CMAKE_THREAD_LIBS_INIT} ${Boost_LIBRARIES})
>>
>> Â Â Â Â  include_directories("${CMAKE_CURRENT_SOURCE_DIR}/include")
>> Â Â Â Â  include_directories("${CMAKE_CURRENT_SOURCE_DIR}/include/modules")
>>
>> Â Â Â Â  # Retrieve the list of source files.
>> Â Â Â Â  file (GLOB SOURCE ${CMAKE_CURRENT_SOURCE_DIR}/src/*.cpp)
>> Â Â Â Â  file (GLOB MODULE_SOURCE 
>> ${CMAKE_CURRENT_SOURCE_DIR}/src/modules/*.cpp)
>>
>> Â Â Â Â  add_executable (main
>> Â Â Â Â  main.cpp
>> Â Â Â Â  ${SOURCE}
>> Â Â Â Â  ${MODULE_SOURCE}
>> Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â  )
>> target_link_libraries(main boost_log)
>> target_link_libraries (main ${Boost_LIBRARIES} -lpthread)
> 
> I'm not sure, but I think the above would generate incorrect order of 
> libraries in the linker command line. You need to ensure that boost_log 
> comes after boost_log_setup, and their dependencies come after still. So 
> it should be: boost_log_setup, boost_log, boost_thread, 
> boost_filesystem, boost_system, boost_date_time, pthread.
> 
> You can see the linker command line if you add VERBOSE=1 environment 
> variable before make.
> 
> Also, you don't need to specify -l in target_link_libraries (i.e. you 
> should specify pthread instead of -lpthread).
> 
> Also, please don't top-post.

And I'm assuming you're linking with shared libraries of Boost. If not, 
you need to *not* define BOOST_LOG_DYN_LINK.