Resending without the html cruft to pass through the linux-kbuild mail daemon ---------- Forwarded message --------- From: Donald Zickus <dzickus@xxxxxxxxxx> Date: Tue, Jul 11, 2023 at 6:27 PM Subject: Looking for a hack to remove auto-selected items from .config output To: <masahiroy@xxxxxxxxxx> Cc: <linux-kbuild@xxxxxxxxxxxxxxx> Hi Masahiro, I am trying to cleanup some stale config data with some of the Red Hat configs. Like most distros, Red Hat sets a bunch of 'menu choice' configs and then merges them together then runs something like 'make olddefconfig' to autoselect the rest of the configs. Been working great for many years. Lately, we are trying to audit the configs and ran into many stale Red Hat set configs that no longer exist upstream (removed, renamed, whatever). Ok, running a script detects these and we can remove them by hand. One corner case we ran into is dropping configs. Like upstream we try and match the merged configs with the final setting from 'make olddefconfig' and fail if there is a mismatch. However, not every config is applicable to every arch, so those configs are dropped and we were always ok with it. But now those dropped configs are confusing folks who think configs are set but they are really dropped. Yes, a Red Hat problem. I am trying to untangle this. Is there a hack I can use that takes a generated .config file and removes all the 'selected' and 'implied' options out? Leaving me with just the minimum configs that need to be set? Then I can de-merge it and re-create our original set config options. Basically reversing the normal config generating process, I think. Not looking for anything complicated, just something simple I can quickly apply. Thoughts? Cheers, Don
