How to add source files in another folder

Question

I\'m using cmake to build my project in C++. Assume I have the following directories on my Source folder

Source
  |_Dir1
  |   |_Class.cpp
  |   |_Class.hpp
  |
         


        

Answer 1

Supposed you have a single CMakeLists.txt file at the Source directory, you'll create two variables using different file() commands

file(GLOB Dir1_Sources RELATIVE "Dir1" "*.cpp")
file(GLOB Dir2_Sources RELATIVE "Dir2" "*.cpp")

and add both sets generated by the file() commands to your target's source list:

add_executable(MyProgram ${Dir1_Sources} ${Dir2_Sources})

---

Alternatively you can place a CMakeLists.txt file under Dir1 and Dir2 (Main) looking as follows

Source
    |
    |_ CMakeLists.txt   
    |    > project(MyProgram)
    |    > cmake_minimum_required(VERSION 3.8)
    |    > add_subdirectory("Dir1")
    |    > add_subdirectory("Dir2")
    |
    |_ Dir1   
    |     |_ CMakeLists.txt   
    |         > file(GLOB Sources "*.cpp")
    |         > add_library(Dir1 STATIC ${Sources})
    |_ Dir2   
          |_ CMakeLists.txt   
              > file(GLOB Sources "*.cpp")
              > add_executable(MyProgram ${Sources})
              > target_link_libraries(MyProgram Dir1)

to add subdirectories as further (static) libraries linked to your main target.