1 files changed, 36 insertions, 0 deletions
diff --git a/examples/allnoconfig.py b/examples/allnoconfig.py
new file mode 100644
index 0000000..2fe151d
--- /dev/null
+++ b/examples/allnoconfig.py
@@ -0,0 +1,36 @@
+# Works like allnoconfig. Verified to produce identical output to 'make
+# allnoconfig' for all ARCHes. The looping is done in case setting one symbol
+# to "n" allows other symbols to be set to "n" (due to dependencies).
+
+import kconfiglib
+import sys
+
+conf = kconfiglib.Config(sys.argv[1])
+
+while True:
+    done = True
+
+    for sym in conf:
+        # Choices take care of themselves for allnoconfig, so we only need to
+        # worry about non-choice symbols
+        if not sym.is_choice_item():
+            lower_bound = sym.get_lower_bound()
+
+            # If we can assign a lower value to the symbol (where "n", "m" and
+            # "y" are ordered from lowest to highest), then do so.
+            # lower_bound() returns None for symbols whose values cannot
+            # (currently) be changed, as well as for non-bool, non-tristate
+            # symbols.
+            if lower_bound is not None and \
+               kconfiglib.tri_less(lower_bound, sym.calc_value()):
+
+                sym.set_value(lower_bound)
+
+                # We just changed the value of some symbol. As this may affect
+                # other symbols, keep going.
+                done = False
+
+    if done:
+        break
+
+conf.write_config(".config")