Re: Boost Log 1.65.1 Linking Issue

From: Andrey Semashev (andrey.semashev_at_[hidden])
Date: 2020-09-15 17:02:40

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} ${Boost_LIBRARIES})
> 
>      include_directories("${CMAKE_CURRENT_SOURCE_DIR}/include")
>      include_directories("${CMAKE_CURRENT_SOURCE_DIR}/include/modules")
> 
>      # Retrieve the list of source files.
>      file (GLOB SOURCE ${CMAKE_CURRENT_SOURCE_DIR}/src/*.cpp)
>      file (GLOB MODULE_SOURCE ${CMAKE_CURRENT_SOURCE_DIR}/src/modules/*.cpp)
> 
>      add_executable (main
>      main.cpp
>      ${SOURCE}
>      ${MODULE_SOURCE}
>                     )
> 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.