Update CMakeLists.txt

Author: TimGoTheCreator

CMakeLists.txt

@@ -57,7 +57,7 @@ endif()
 # ============================
 include_directories(${CMAKE_SOURCE_DIR}/include)
 include_directories(${CMAKE_SOURCE_DIR}/src)
-file(GLOB SRC_FILES ${CMAKE_SOURCE_DIR}/src/*.cpp)
+file(GLOB_RECURSE SRC_FILES ${CMAKE_SOURCE_DIR}/src/*.cpp)
 file(GLOB ARGPARSE_FILES ${CMAKE_SOURCE_DIR}/argparse/*.cpp)
 
 add_executable(next ${SRC_FILES} ${ARGPARSE_FILES})