Linker problem ROS1 windows10 undefined reference to ros init

edit

Hi, I am trying to compile a very simple code on windows10 (ROS melodic) with mingw73_64. I have to use cmake only (no catkin). I know this works pretty well on linux. Maybe I am missing something windows-specific?

This is my CMakeLists.txt:

cmake_minimum_required(VERSION 3.4 FATAL_ERROR)
set(APP_NAME "HUD")
project(ScreenHUD)
set(CMAKE_CXX_STANDARD 11)
set(CMAKE_CXX_STANDARD_REQUIRED ON)

#SET_PROPERTY(GLOBAL PROPERTY USE_FOLDERS ON)

SET(ROS_ROOT "C://opt/ros/melodic/x64" CACHE PATH "ROS Root" FORCE)
SET(ROSDEPS_ROOT "C://opt/rosdeps/x64" CACHE PATH "ROSDEPS Root" FORCE)

include_directories("${ROS_ROOT}/include")
include_directories("${ROSDEPS_ROOT}/include")
include_directories("${ROS_CUSTOM_ROOT}/include")
include_directories("${ROSDEPS_ROOT}/include/boost-1_66")
include_directories("${ROS_ROOT}/lib")
include_directories("${ROS_ROOT}/bin")

link_directories("${ROS_ROOT}/lib")
link_directories("${ROS_ROOT}/bin")
link_directories("${ROSDEPS_ROOT}/lib")
link_directories("${ROSDEPS_ROOT}/bin")

set(CMAKE_INCLUDE_CURRENT_DIR ON)
set(CMAKE_AUTOMOC ON)

add_executable(${APP_NAME}
src/main.cpp
)

# After include_directory and link_directory combination did not work, I tried this:
find_library(roscpp
    roscpp
    PATHS "${ROS_ROOT}/lib"
    PATH_SUFFIXES ".lib")
find_library(roscpp_serialization
    roscpp_serialization
    PATHS "${ROS_ROOT}/lib"
    PATH_SUFFIXES ".lib")
find_library(rosconsole
    rosconsole
    PATHS "${ROS_ROOT}/lib"
    PATH_SUFFIXES ".lib")
find_library(rostime
    rostime
    PATHS "${ROS_ROOT}/lib"
    PATH_SUFFIXES ".lib")
find_library(rosbag
    rosbag
    PATHS "${ROS_ROOT}/lib"
    PATH_SUFFIXES ".lib")

set(LINK_LIBRARY
    roscpp
    roscpp_serialization
    rosconsole
    rostime
    rosbag)

target_link_libraries(${APP_NAME}
    ${roscpp}
    ${roscpp_serialization}
    ${rosconsole}
    ${rostime}
    ${rosbag}
    #${LINK_LIBRARY} <-- using this instead of single libs as above resulted in the same problem
 )

My main.cpp looks like:

#include <ros/ros.h>

int main(int argc, char** argv)
{
    ros::init(argc, argv, "node_name");

    while (ros::ok())
    {
        sleep(1);
    }
    return 0;
}

When I build, the linker throws me an undefined reference to ros init error. This tells me that the library could not be linked. Using the message output of cmake, I could see that cmake finds the libraries but somehow cannot or does not link them.

Any hints on what might be the problem are very appreciated!