Actually commit new allnoconfig.py

Oops.

1 files changed, 41 insertions, 0 deletions

diff --git a/allnoconfig.py b/allnoconfig.py
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+++ b/allnoconfig.py
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+#!/usr/bin/env python
+
+# Works like 'make allnoconfig'. Verified by the test suite to generate
+# identical output to 'make allnoconfig' for all ARCHes.
+#
+# See the examples/allnoconfig_walk.py example script for another variant.
+#
+# Usage for the Linux kernel:
+#
+#   $ make [ARCH=<arch>] scriptconfig SCRIPT=Kconfiglib/allnoconfig.py
+
+import os
+import sys
+
+import kconfiglib
+
+def main():
+    if len(sys.argv) > 2:
+        sys.exit("usage: {} [Kconfig]".format(sys.argv[0]))
+
+    kconf = kconfiglib.Kconfig("Kconfig" if len(sys.argv) < 2 else sys.argv[1])
+
+    # Avoid warnings printed by Kconfiglib when assigning a value to a symbol that
+    # has no prompt. Such assignments never have an effect.
+    kconf.disable_warnings()
+
+    # Small optimization
+    BOOL_TRI = (kconfiglib.BOOL, kconfiglib.TRISTATE)
+
+    for sym in kconf.defined_syms:
+        if sym.orig_type in BOOL_TRI:
+            sym.set_value(2 if sym.is_allnoconfig_y else 0)
+
+    config_filename = os.environ.get("KCONFIG_CONFIG")
+    if config_filename is None:
+        config_filename = ".config"
+
+    kconf.write_config(config_filename)
+
+if __name__ == "__main__":
+    main()