Undefined reference errors in simple boost serialization

Question

I have a minimal example of Boost serialization where I try to save an integer in a binary archive file

Here is main.cpp:

#include <iostream>
#include <fstream>
#include <boost/archive/binary_oarchive.hpp>

int main() {
    int t = 0;
    std::ofstream file("Test.bin");
    boost::archive::binary_oarchive archive(file);
    archive << t;
    file.close();
    return 0;
}

and here is the CMake file:

cmake_minimum_required(VERSION 3.15)
project(Test)

set(CMAKE_CXX_STANDARD 17)
find_package(Boost REQUIRED serialization)
add_executable(Test main.cpp)
if(Boost_FOUND)
    include_directories(${Boost_INCLUDE_DIRS})
    target_link_libraries(Test ${Boost_LIBRARIES})
endif()

When I try to run this program in CLion, I get a large list of undefined reference errors as shown here: https://pastebin.com/8uX9MZFf

I have setup Boost using vcpkg package manager. I'm compiling using Mingw-w64. The CMake file loads without errors (only a warning that says "New Boost version may have incorrect or missing dependencies and imported targets," though I've heard this warning isn't of concern, as it just means the current version of CMake isn't aware of the newest version of Boost).

I've tried to look for solutions to this everywhere, but I can't seem to find anything that works here. Any help would be appreciated.

I'm using cmake 3.15.3, boost 1.73.0 and mingw-w64 6.0.

EDIT

I uninstalled and reinstalled Boost without using the package manager, and tried getting the serialization library again. In this context, CMake runs into errors saying it can't find Boost with serialization (Though it can find Boost alone). I set Boost_DEBUG to ON and looked at the output, and noticed the following things:

_boost_COMPILER = "-mgw81" (guessed) CMake seems to guess that the compiler I used to compile boost was mgw81. I'm guessing it got the 8.1 from my gcc version, which is correct.

Searching for SERIALIZATION_LIBRARY_RELEASE: boost_serialization-mgw81-mt-x64-1_73;boost_serialization-mgw81-mt-x64;...

As a result of that compiler selection, it searches for a file with "-mgw81" in the name. The problem is that the library files generated when I built boost are named like so:

libboost_serialization-mgw8-mt-x64-1_73.a

This says "-mgw8" instead of "-mgw81". I don't know how to correct CMake or build boost in such a way that this conflict doesn't happen. I've tried rebuilding boost with toolset=gcc-8.1 instead of toolset=gcc, but I still get "-mgw8" in the library file names.

EDIT 2

I found the solution to the above issue. I've posted it below.

Answer 1

After realizing that the issue was what I mentioned in EDIT, I looked further into how that issue could be resolved, and I found out you can manually set the compiler that is used to search through the variable Boost_COMPILER.

I changed my CMake file to the following:

cmake_minimum_required(VERSION 3.15)
project(Test)

set(CMAKE_CXX_STANDARD 17)
set(CMAKE_INCLUDE_PATH ${CMAKE_INCLUDE_PATH} "C:/boost_1_73_0")
set(CMAKE_LIBRARY_PATH ${CMAKE_LIBRARY_PATH} "C:/boost_1_73_0/libs")
set(Boost_DEBUG ON)
set(Boost_COMPILER -mgw8)
set(Boost_ARCHITECTURE -x64)
set(BOOST_ROOT C:/boost)
set(BOOST_INCLUDEDIR C:/boost/include/boost-1_73/boost)
set(BOOST_LIBRARYDIR C:/boost/lib)
set(BOOST_NO_SYSTEM_PATHS ON)
find_package(Boost REQUIRED serialization)
add_executable(Test main.cpp)
if(Boost_FOUND)
    include_directories(${Boost_INCLUDE_DIRS})
    target_link_libraries(Test ${Boost_LIBRARIES})
endif()

I believe the critical changes here were setting Boost_COMPILER and Boost_ARCHITECTURE. I realized Boost_ARCHITECTURE needed to be set from this question: Linking boost in CLion project.

With this CMake file, my main.cpp file from above ran properly.