[Meson] Add the file install_modules.py

Author: amontoison

install_modules.py

@@ -0,0 +1,27 @@
+#!/usr/bin/env python3
+# Initially proposed by Sebastian Ehlert (@awvwgk)
+from os import environ, listdir, makedirs, walk
+from os.path import join, isdir, exists
+from sys import argv
+from shutil import copy
+
+build_dir = environ["MESON_BUILD_ROOT"]
+if "MESON_INSTALL_DESTDIR_PREFIX" in environ:
+    install_dir = environ["MESON_INSTALL_DESTDIR_PREFIX"]
+else:
+    install_dir = environ["MESON_INSTALL_PREFIX"]
+
+include_dir = "modules"
+module_dir = join(install_dir, include_dir)
+
+modules = []
+# finds $build_dir/**/*.mod and $build_dir/**/*.smod
+for root, dirs, files in walk(build_dir):
+    modules += [join(root, f) for f in files if f.endswith(".mod") or f.endswith(".smod")]
+
+if not exists(module_dir):
+    makedirs(module_dir)
+
+for mod in modules:
+    print("Installing", mod, "to", module_dir)
+    copy(mod, module_dir)