How to set Visual Studio Filters for nested sub directory using cmake

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There are several ready to use or adaptable solutions out there to mimic a Source Tree behavior like in Eclipse with CMake for Visual Studio (e.g. ADD_SRC_SUBFOLDER DESTINATION_SRCS from Zobra or GroupSources from Luca).

Here is my reduced version for your use case:

cmake_minimum_required(VERSION 2.8.10)

project(Main CXX)

set(
    source_list
    "File.cpp"
    "File.hpp"
    "Dir/File1.cpp"
    "Dir/File1.hpp"
    "Dir/File2.cpp"
    "Dir/File2.hpp"
)

add_executable(Main ${source_list})

foreach(source IN LISTS source_list)
    get_filename_component(source_path "${source}" PATH)
    string(REPLACE "https://stackoverflow.com/" "\\" source_path_msvc "${source_path}")
    source_group("${source_path_msvc}" FILES "${source}")
endforeach()

See the documentation of source_group() that you have to give the sub-directories with double backslashes.

For the reason why I replaced your file(GLOB ...) with a dedicated list of all source files I like to quote from CMake’s file() command documentation:

We do not recommend using GLOB to collect a list of source files from
your source tree. If no CMakeLists.txt file changes when a source is
added or removed then the generated build system cannot know when to
ask CMake to regenerate.

And here is my fail-safe version (that checks for absolute paths) to be used as a function:

function(assign_source_group)
    foreach(_source IN ITEMS ${ARGN})
        if (IS_ABSOLUTE "${_source}")
            file(RELATIVE_PATH _source_rel "${CMAKE_CURRENT_SOURCE_DIR}" "${_source}")
        else()
            set(_source_rel "${_source}")
        endif()
        get_filename_component(_source_path "${_source_rel}" PATH)
        string(REPLACE "https://stackoverflow.com/" "\\" _source_path_msvc "${_source_path}")
        source_group("${_source_path_msvc}" FILES "${_source}")
    endforeach()
endfunction(assign_source_group)

Which you would call in the example with

assign_source_group(${source_list})

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