Re: FYI: Why META_MODE rebuilds so much for building again after installworld (no source changes) [code level bug evidence]

In reply to: Mark Millard : "Re: FYI: Why META_MODE rebuilds so much for building again after installworld (no source changes) [code level bug evidence]"
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From: Simon J. Gerraty <sjg_at_juniper.net>
Date: Thu, 23 Feb 2023 20:28:35 UTC

Mark Millard <marklmi@yahoo.com> wrote:
> So with -ddM why do I see lots of "cached_realpath:"
> notices for the same path? For example:

how many separate bmake instances are in that log?

> 
> # grep "tmp/legacy/usr/sbin/ln\>" /usr/obj/BUILDs/main-amd64-nodbg-clang/sys-typescripts/typescript-make-amd64-nodbg-clang-amd64-host-2023-02-23:10:20:26 | more
> cached_realpath: /usr/obj/BUILDs/main-amd64-nodbg-clang/usr/main-src/amd64.amd64/tmp/legacy/usr/sbin/ln -> /usr/obj/BUILDs/main-amd64-nodbg-clang/usr/main-src/amd64.amd64/tmp/legacy/bin/ln
> cached_realpath: /usr/obj/BUILDs/main-amd64-nodbg-clang/usr/main-src/amd64.amd64/tmp/legacy/usr/sbin/ln -> /usr/obj/BUILDs/main-amd64-nodbg-clang/usr/main-src/amd64.amd64/tmp/legacy/bin/ln
>    Caching 02:49:37 Feb 23, 2023 for /usr/obj/BUILDs/main-amd64-nodbg-clang/usr/main-src/amd64.amd64/tmp/legacy/usr/sbin/ln
> /usr/obj/BUILDs/main-amd64-nodbg-clang/usr/main-src/amd64.amd64/usr.bin/awk/awkgram.tab.h.meta: 22: file '/usr/obj/BUILDs/main-amd64-nodbg-clang/usr/main-src/amd64.amd64/tmp/legacy/usr/sbin/ln' is newer than the target...