switched to meson, let's see if it's gonna bite me

meson.build

@@ -0,0 +1,17 @@
+project('fedavg_mpi', 'c')
+add_project_arguments(
+  '-DNPY_NO_DEPRECATED_API=NPY_1_7_API_VERSION',
+  language: 'c'
+)
+
+mpi = dependency('mpi')
+python = dependency('python3')
+numpy_header = include_directories(run_command(
+  'python3', '-c', 'import numpy;print(numpy.get_include())'
+).stdout().strip())
+
+executable(
+  'fedavg_mpi', 'main.c', 'cythoned/library.c',
+  dependencies: [mpi, python],
+  include_directories: numpy_header
+)