Visual studio project for header only library - c++

Question

I'm creating a CMake project whose two main files are:
cmake_minimum_required(VERSION 3.10 FATAL_ERROR)
project(CPP_Algorithms_and_Data_Structures)
set( CMAKE_CXX_STANDARD 11 )
#add_subdirectory(./ElementaryAlgorithms)
add_subdirectory(./ElementaryDataStructures)
#add_subdirectory(./AdvancedDataStructures)
#add_subdirectory(./GraphAlgorithms)
#set(INCLUDE_FOLDERS
# ./
# ./ElementaryAlgorithms
# ./ElementaryDataStructures
# ./AdvancedDataStructures
# ./GraphAlgorithms)
set(INCLUDE_FOLDERS ./ ./ElementaryDataStructures)
set(HEADER_FILES alg-and-ds.h)
set(SRC_FILES main.cpp alg-and-ds.cpp)
add_executable(alg-and-ds ${SRC_FILES} ${HEADER_FILES})
target_include_directories(alg-and-ds PUBLIC ${INCLUDE_FOLDERS})
target_link_libraries(alg-and-ds elementary-data-structures)
#target_link_libraries(alg-and-ds
# graph-algorithms
# elementary-data-structures
# elementary-algorithms
# advanced-data-structures)
and
cmake_minimum_required(VERSION 3.10 FATAL_ERROR)
project(ElementaryDataStructures)
set( CMAKE_CXX_STANDARD 11 )
if(WIN32)
set(CMAKE_WINDOWS_EXPORT_ALL_SYMBOLS YES CACHE BOOL "Export all symbols")
endif()
add_library(elementary-data-structures INTERFACE)
target_include_directories(elementary-data-structures INTERFACE ./)
target_sources(elementary-data-structures INTERFACE
"${CMAKE_CURRENT_LIST_DIR}/list.h"
"${CMAKE_CURRENT_LIST_DIR}/list.tcc")
#set_target_properties(elementary-data-structures PROPERTIES RUNTIME_OUTPUT_DIRECTORY ${CMAKE_BINARY_DIR})
I'm using these to generate a visual studio solution, however what I would like to do is to generate a separate project for the header only library.
Basically I had a small list library that I converted to an header only library, by using templates, before such change I was able to generate separate visual studio projects but in the same solution, in this case instead I can see something like this:
But what I'd like to see, assuming this is possible is a separate project for the ElementaryDataStructures.
I'm not an expert in CMake and all the setups, but I would be great if you could help me to figure out how to do it.
Update:
Following suggestion on the comment I got a new project in VS, however there's still a tiny bit that bothers me.
In the picture below I can see both alg-and-ds and ElementaryDataStructures_ referencing the same sources. Is there a way to avoid the alg-and-ds project to show such files?
The update CMakeLists.txt
cmake_minimum_required(VERSION 3.10 FATAL_ERROR)
project(ElementaryDataStructures)
set( CMAKE_CXX_STANDARD 11 )
if(WIN32)
set(CMAKE_WINDOWS_EXPORT_ALL_SYMBOLS YES CACHE BOOL "Export all symbols")
endif()
add_library(elementary-data-structures INTERFACE)
target_include_directories(elementary-data-structures INTERFACE ./)
target_sources(elementary-data-structures INTERFACE
"${CMAKE_CURRENT_LIST_DIR}/list.h"
"${CMAKE_CURRENT_LIST_DIR}/list.tcc")
add_custom_target(ElementaryDataStructures_ SOURCES ${CMAKE_CURRENT_LIST_DIR}/list.h ${CMAKE_CURRENT_LIST_DIR}/list.tcc)

Answer 1

As far as I know there is no normal way to do it. Only a hackish one. So you create a custom target which will force MSVC to show the project in the solution tree. Something like this:
add_custom_target(${PROJECT_NAME}_ SOURCES ${PROJECT_SOURCES})
Note the underscore in the name: it is there to differentiate it from the name in the add_library command. Of course you need to replace the variables in my example to yours actual ones.

Answer 2

Another solution is to declare static library with stub source file:
file(TOUCH ${CMAKE_BINARY_DIR}/stub.cpp)
add_library(elementary-data-structures STATIC
"${CMAKE_BINARY_DIR}/stub.cpp"
"${CMAKE_CURRENT_LIST_DIR}/list.h"
"${CMAKE_CURRENT_LIST_DIR}/list.tcc"
)
target_include_directories(elementary-data-structures INTERFACE ./)