Refactor set up for inclusion of submodules

Author: GiacomoPope

setup.py

@@ -63,24 +63,24 @@
     compiler_directives['linetrace'] = True
 
 
-ext_modules = [
-    Extension(
-        "flint._flint", ["src/flint/pyflint.pyx"],
-        libraries=libraries,
-        library_dirs=default_lib_dirs,
-        include_dirs=default_include_dirs,
-        define_macros=define_macros,
-        ),
-    Extension(
-        "flint.flint_base.flint_context",
-        ["src/flint/flint_base/flint_context.pyx"],
-        libraries=libraries,
-        library_dirs=default_lib_dirs,
-        include_dirs=default_include_dirs,
-        define_macros=define_macros,
-    ),
+ext_files = [
+    ("flint._flint", ["src/flint/pyflint.pyx"]), # Main Module
+    # Submodules
+    ("flint.flint_base.flint_context", ["src/flint/flint_base/flint_context.pyx"]),
 ]
 
+ext_options = {
+    "libraries" : libraries,
+    "library_dirs" : default_lib_dirs,
+    "include_dirs" : default_include_dirs,
+    "define_macros" : define_macros,
+}
+
+ext_modules = []
+for mod_name, src_files in ext_files:
+    ext = Extension(mod_name, src_files, **ext_options)
+    ext_modules.append(ext)
+
 for e in ext_modules:
     e.cython_directives = {"embedsignature": True}