it started working so commit it

CMakeLists.txt

@@ -0,0 +1,19 @@
+cmake_minimum_required(VERSION 3.5)
+project(fedavg_mpi)
+
+find_package(MPI REQUIRED)
+find_package(Python3 COMPONENTS Development NumPy)
+
+add_executable(${PROJECT_NAME} main.c library.c)
+
+target_include_directories(${PROJECT_NAME} PRIVATE ${Python3_INCLUDE_DIRS})
+target_include_directories(${PROJECT_NAME} PRIVATE ${Python3_NumPy_INCLUDE_DIRS})
+target_include_directories(${PROJECT_NAME} PRIVATE ${CMAKE_CURRENT_SOURCE_DIR})
+
+target_link_libraries(${PROJECT_NAME} ${Python3_LIBRARIES})
+target_link_libraries(${PROJECT_NAME} ${MPI_C_LIBRARIES})
+
+target_compile_options(${PROJECT_NAME} PRIVATE -Wall -g -std=c99)
+add_compile_definitions(NPY_NO_DEPRECATED_API=NPY_1_7_API_VERSION)
+
+set(CMAKE_EXPORT_COMPILE_COMMANDS on)