Can't build the game from source

[SpidFightFR]

When i try to build the game (create a build folder then cmake .. inside of it, i get this error:

Error

- The C compiler identification is GNU 12.1.1
-- The CXX compiler identification is GNU 12.1.1
-- Detecting C compiler ABI info
-- Detecting C compiler ABI info - done
-- Check for working C compiler: /usr/bin/cc - skipped
-- Detecting C compile features
-- Detecting C compile features - done
-- Detecting CXX compiler ABI info
-- Detecting CXX compiler ABI info - done
-- Check for working CXX compiler: /usr/bin/c++ - skipped
-- Detecting CXX compile features
-- Detecting CXX compile features - done
CMake Error at CMakeLists.txt:18 (add_subdirectory):
  The source directory

   ../ext/Stardust-Celeste

  does not contain a CMakeLists.txt file.


CMake Error at CMakeLists.txt:21 (add_subdirectory):
  The source directory

    ../ext/zlib

  does not contain a CMakeLists.txt file.


-- Configuring incomplete, errors occurred!

How can i fix this, please?

[SpidFightFR]

Nevermind, when git cloning the repo, we must add the --recursive argument.

Example:
git clone --recursive https://github.com/CrossCraft/CrossCraft-Classic.git