I’m starting to learn C++ and CMake is a bigger struggle for me.
I’ve written a little code to get me started and also wanted to write tests from the very beginning.
Except that I get Undefined Symbols every time I run my test.

I already have #include “ConfigStore.h” in test.cp and the file seems to be recongnized

Error when compiling :

[build] ld: Undefined symbols:
[build]  ConfigStore::addValue(std::__1::basic_string<char, std::__1::char_traits<char>
...
[build] clang: error: linker command failed with exit code 

Here’s how I made things :

Project structure

root:

CMakeLists.txt

root/Infrastructure/ConfigStore:

ConfigStore.h /ConfigStore.cpp -> (include “../Singleton/Singleton.h”)

CMakeLists.txt

root/Infrastructure/Singleton:

Singleton.h / Singleton.cpp

root/test

CMakeLists.txt
googletest
ConfigStore_test.cpp

To be concise, here’s how I managed to add ConfigStore to my test proect.

CMakeLists (TEST) :

include_directories(${CMAKE_CURRENT_SOURCE_DIR}/googletest/include ${CMAKE_SOURCE_DIR}/Infrastructure/ConfigStore)
link_directories(${BinanceAPI_LIB_OUT}/ConfigStore)

And in CMakeLists.txt :

set(LIBRARY_OUTPUT_PATH ${BinanceAPI_LIB_OUT}/${PROJECT_NAME})
set(CONFIG_STORE_DIR ${CMAKE_CURRENT_SOURCE_DIR})

add_library(${PROJECT_NAME} SHARED ConfigStore)```

And the root CMakeLists.txt : 

```add_subdirectory(${CMAKE_SOURCE_DIR}/Infrastructure/ConfigStore)
add_subdirectory(test)

add_library(BinanceAPI BinanceAPI.cpp)

target_link_libraries(${PROJECT_NAME} PUBLIC 
ConfigStore)```

I know this is a lot of code, but I'm really struggling getting what's wrong. Thanks for helping !