This is just an FYI about an experiment. After having done installworld installkernel for other reasons, I did two -dM buildworld buildkernel sequences in a row (no source changes, no cleaning activity), producing script files logging the output. The below provides some comparison/contrast between the two log files.
Below I report first on the frequencies of the file paths reported in the "is newer than the target" lines that were unique to the first run (diff output line starts with "-"). I only show a prefix the full list: # diff -u /usr/obj/BUILDs/main-amd64-nodbg-clang/sys-typescripts/typescript-make-amd64-nodbg-clang-amd64-host-2023-02-22:12:* | grep "^-.*is newer than the target" | sed -e "s@^.*: file '@file '@" | sort | uniq -c | sort -rn | more 4432 file '/usr/obj/BUILDs/main-amd64-nodbg-clang/usr/main-src/amd64.amd64/tmp/legacy/usr/sbin/gzip' is newer than the target... 2692 file '/usr/obj/BUILDs/main-amd64-nodbg-clang/usr/main-src/amd64.amd64/tmp/legacy/usr/sbin/awk' is newer than the target... 2155 file '/usr/obj/BUILDs/main-amd64-nodbg-clang/usr/main-src/amd64.amd64/tmp/legacy/usr/sbin/realpath' is newer than the target... 1395 file '/usr/obj/BUILDs/main-amd64-nodbg-clang/usr/main-src/amd64.amd64/tmp/usr/lib/Scrt1.o' is newer than the target... 1381 file '/usr/obj/BUILDs/main-amd64-nodbg-clang/usr/main-src/amd64.amd64/secure/lib/libcrypto/openssl/opensslconf.h' is newer than the target... 1318 file '/usr/obj/BUILDs/main-amd64-nodbg-clang/usr/main-src/amd64.amd64/obj-lib32/secure/lib/libcrypto/openssl/opensslconf.h' is newer than the target... 1000 file '/usr/obj/BUILDs/main-amd64-nodbg-clang/usr/main-src/amd64.amd64/tmp/legacy/usr/sbin/cat' is newer than the target... 962 file '/usr/obj/BUILDs/main-amd64-nodbg-clang/usr/main-src/amd64.amd64/tmp/legacy/usr/sbin/rm' is newer than the target... 928 file '/usr/obj/BUILDs/main-amd64-nodbg-clang/usr/main-src/amd64.amd64/tmp/legacy/usr/sbin/sh' is newer than the target... 878 file '/usr/obj/BUILDs/main-amd64-nodbg-clang/usr/main-src/amd64.amd64/tmp/legacy/usr/sbin/ln' is newer than the target... 624 file '/usr/obj/BUILDs/main-amd64-nodbg-clang/usr/main-src/amd64.amd64/lib/clang/libllvm/llvm/IR/Attributes.inc' is newer than the target... 553 file '/usr/obj/BUILDs/main-amd64-nodbg-clang/usr/main-src/amd64.amd64/tmp/legacy/usr/sbin/sed' is newer than the target... 437 file '/usr/obj/BUILDs/main-amd64-nodbg-clang/usr/main-src/amd64.amd64/tmp/legacy/usr/sbin/mv' is newer than the target... 417 file '/usr/obj/BUILDs/main-amd64-nodbg-clang/usr/main-src/amd64.amd64/tmp/legacy/usr/sbin/mkcsmapper' is newer than the target... 398 file '/usr/obj/BUILDs/main-amd64-nodbg-clang/usr/main-src/amd64.amd64/lib/clang/libclang/clang/Basic/DiagnosticCommonKinds.inc' is newer than the target... 351 file '/usr/obj/BUILDs/main-amd64-nodbg-clang/usr/main-src/amd64.amd64/tmp/legacy/usr/sbin/grep' is newer than the target... 281 file '/usr/obj/BUILDs/main-amd64-nodbg-clang/usr/main-src/amd64.amd64/lib/clang/libllvm/llvm/IR/IntrinsicEnums.inc' is newer than the target... 177 file '/usr/obj/BUILDs/main-amd64-nodbg-clang/usr/main-src/amd64.amd64/tmp/usr/lib/crti.o' is newer than the target... 161 file '/usr/obj/BUILDs/main-amd64-nodbg-clang/usr/main-src/amd64.amd64/lib/clang/libclang/clang/AST/DeclNodes.inc' is newer than the target... 115 file '/usr/obj/BUILDs/main-amd64-nodbg-clang/usr/main-src/amd64.amd64/tmp/legacy/usr/sbin/llvm-tblgen' is newer than the target... 98 file '/usr/obj/BUILDs/main-amd64-nodbg-clang/usr/main-src/amd64.amd64/tmp/legacy/usr/sbin/crunchide' is newer than the target... 86 file '/usr/obj/BUILDs/main-amd64-nodbg-clang/usr/main-src/amd64.amd64/lib/clang/libclang/clang/StaticAnalyzer/Checkers/Checkers.inc' is newer than the target... 75 file '/usr/obj/BUILDs/main-amd64-nodbg-clang/usr/main-src/amd64.amd64/tmp/legacy/usr/sbin/uudecode' is newer than the target... 73 file '/usr/obj/BUILDs/main-amd64-nodbg-clang/usr/main-src/amd64.amd64/tmp/legacy/usr/sbin/clang-tblgen' is newer than the target... 72 file '/usr/obj/BUILDs/main-amd64-nodbg-clang/usr/main-src/amd64.amd64/tmp/legacy/usr/sbin/cp' is newer than the target... 57 file '/usr/obj/BUILDs/main-amd64-nodbg-clang/usr/main-src/amd64.amd64/tmp/legacy/usr/sbin/mkesdb' is newer than the target... 56 file '/usr/obj/BUILDs/main-amd64-nodbg-clang/usr/main-src/amd64.amd64/lib/clang/libllvm/AArch64GenRegisterInfo.inc' is newer than the target... 52 file '/usr/obj/BUILDs/main-amd64-nodbg-clang/usr/main-src/amd64.amd64/tmp/legacy/usr/sbin/gencat' is newer than the target... . . . Using egrep "/(sbin|bin)/" to be more selective about which lines to show: # diff -u /usr/obj/BUILDs/main-amd64-nodbg-clang/sys-typescripts/typescript-make-amd64-nodbg-clang-amd64-host-2023-02-22:12:* | grep "^-.*is newer than the target" | s ed -e "s@^.*: file '@file '@" | sort | uniq -c | sort -rn | egrep "/(sbin|bin)/" | more 4432 file '/usr/obj/BUILDs/main-amd64-nodbg-clang/usr/main-src/amd64.amd64/tmp/legacy/usr/sbin/gzip' is newer than the target... 2692 file '/usr/obj/BUILDs/main-amd64-nodbg-clang/usr/main-src/amd64.amd64/tmp/legacy/usr/sbin/awk' is newer than the target... 2155 file '/usr/obj/BUILDs/main-amd64-nodbg-clang/usr/main-src/amd64.amd64/tmp/legacy/usr/sbin/realpath' is newer than the target... 1000 file '/usr/obj/BUILDs/main-amd64-nodbg-clang/usr/main-src/amd64.amd64/tmp/legacy/usr/sbin/cat' is newer than the target... 962 file '/usr/obj/BUILDs/main-amd64-nodbg-clang/usr/main-src/amd64.amd64/tmp/legacy/usr/sbin/rm' is newer than the target... 928 file '/usr/obj/BUILDs/main-amd64-nodbg-clang/usr/main-src/amd64.amd64/tmp/legacy/usr/sbin/sh' is newer than the target... 878 file '/usr/obj/BUILDs/main-amd64-nodbg-clang/usr/main-src/amd64.amd64/tmp/legacy/usr/sbin/ln' is newer than the target... 553 file '/usr/obj/BUILDs/main-amd64-nodbg-clang/usr/main-src/amd64.amd64/tmp/legacy/usr/sbin/sed' is newer than the target... 437 file '/usr/obj/BUILDs/main-amd64-nodbg-clang/usr/main-src/amd64.amd64/tmp/legacy/usr/sbin/mv' is newer than the target... 417 file '/usr/obj/BUILDs/main-amd64-nodbg-clang/usr/main-src/amd64.amd64/tmp/legacy/usr/sbin/mkcsmapper' is newer than the target... 351 file '/usr/obj/BUILDs/main-amd64-nodbg-clang/usr/main-src/amd64.amd64/tmp/legacy/usr/sbin/grep' is newer than the target... 115 file '/usr/obj/BUILDs/main-amd64-nodbg-clang/usr/main-src/amd64.amd64/tmp/legacy/usr/sbin/llvm-tblgen' is newer than the target... 98 file '/usr/obj/BUILDs/main-amd64-nodbg-clang/usr/main-src/amd64.amd64/tmp/legacy/usr/sbin/crunchide' is newer than the target... 75 file '/usr/obj/BUILDs/main-amd64-nodbg-clang/usr/main-src/amd64.amd64/tmp/legacy/usr/sbin/uudecode' is newer than the target... 73 file '/usr/obj/BUILDs/main-amd64-nodbg-clang/usr/main-src/amd64.amd64/tmp/legacy/usr/sbin/clang-tblgen' is newer than the target... 72 file '/usr/obj/BUILDs/main-amd64-nodbg-clang/usr/main-src/amd64.amd64/tmp/legacy/usr/sbin/cp' is newer than the target... 57 file '/usr/obj/BUILDs/main-amd64-nodbg-clang/usr/main-src/amd64.amd64/tmp/legacy/usr/sbin/mkesdb' is newer than the target... 52 file '/usr/obj/BUILDs/main-amd64-nodbg-clang/usr/main-src/amd64.amd64/tmp/legacy/usr/sbin/gencat' is newer than the target... 46 file '/usr/obj/BUILDs/main-amd64-nodbg-clang/usr/main-src/amd64.amd64/tmp/legacy/usr/sbin/lex' is newer than the target... 29 file '/usr/obj/BUILDs/main-amd64-nodbg-clang/usr/main-src/amd64.amd64/tmp/legacy/usr/sbin/m4' is newer than the target... 28 file '/usr/obj/BUILDs/main-amd64-nodbg-clang/usr/main-src/amd64.amd64/tmp/usr/bin/ctfconvert' is newer than the target... 27 file '/usr/obj/BUILDs/main-amd64-nodbg-clang/usr/main-src/amd64.amd64/tmp/legacy/usr/sbin/compile_et' is newer than the target... 26 file '/usr/obj/BUILDs/main-amd64-nodbg-clang/usr/main-src/amd64.amd64/tmp/legacy/usr/sbin/asn1_compile' is newer than the target... 13 file '/usr/obj/BUILDs/main-amd64-nodbg-clang/usr/main-src/amd64.amd64/tmp/legacy/usr/sbin/lldb-tblgen' is newer than the target... 10 file '/usr/obj/BUILDs/main-amd64-nodbg-clang/usr/main-src/amd64.amd64/tmp/legacy/usr/sbin/make-roken' is newer than the target... 8 file '/usr/obj/BUILDs/main-amd64-nodbg-clang/usr/main-src/amd64.amd64/tmp/usr/bin/objcopy' is newer than the target... 7 file '/usr/obj/BUILDs/main-amd64-nodbg-clang/usr/main-src/amd64.amd64/tmp/legacy/usr/sbin/uuencode' is newer than the target... 6 file '/usr/obj/BUILDs/main-amd64-nodbg-clang/usr/main-src/amd64.amd64/tmp/legacy/usr/sbin/slc' is newer than the target... 4 file '/usr/obj/BUILDs/main-amd64-nodbg-clang/usr/main-src/amd64.amd64/tmp/legacy/usr/sbin/file2c' is newer than the target... 3 file '/usr/obj/BUILDs/main-amd64-nodbg-clang/usr/main-src/amd64.amd64/tmp/legacy/usr/sbin/dd' is newer than the target... 2 file '/usr/obj/BUILDs/main-amd64-nodbg-clang/usr/main-src/amd64.amd64/tmp/legacy/usr/sbin/truncate' is newer than the target... 2 file '/usr/obj/BUILDs/main-amd64-nodbg-clang/usr/main-src/amd64.amd64/tmp/legacy/usr/sbin/env' is newer than the target... 1 file '/usr/obj/BUILDs/main-amd64-nodbg-clang/usr/main-src/amd64.amd64/tmp/usr/bin/nm' is newer than the target... 1 file '/usr/obj/BUILDs/main-amd64-nodbg-clang/usr/main-src/amd64.amd64/tmp/legacy/usr/sbin/touch' is newer than the target... 1 file '/usr/obj/BUILDs/main-amd64-nodbg-clang/usr/main-src/amd64.amd64/tmp/legacy/usr/sbin/jot' is newer than the target... 1 file '/usr/obj/BUILDs/main-amd64-nodbg-clang/usr/main-src/amd64.amd64/tmp/legacy/usr/sbin/egrep' is newer than the target... 1 file '/usr/obj/BUILDs/main-amd64-nodbg-clang/usr/main-src/amd64.amd64/tmp/legacy/usr/sbin/crunchgen' is newer than the target... 1 file '/usr/obj/BUILDs/main-amd64-nodbg-clang/usr/main-src/amd64.amd64/tmp/legacy/usr/sbin/cap_mkdb' is newer than the target... 1 file '/usr/obj/BUILDs/main-amd64-nodbg-clang/usr/main-src/amd64.amd64/tmp/legacy/usr/sbin/basename' is newer than the target... As for lines unique to the 2nd run (diff output line starts with "+"): # diff -u /usr/obj/BUILDs/main-amd64-nodbg-clang/sys-typescripts/typescript-make-amd64-nodbg-clang-amd64-host-2023-02-22:12:* | grep "^[+].*is newer than the target" | sed -e "s@^.*: file '@file '@" | sort | uniq -c | sort -rn | more 2155 file '/usr/obj/BUILDs/main-amd64-nodbg-clang/usr/main-src/amd64.amd64/tmp/legacy/usr/sbin/realpath' is newer than the target... 1466 file '/usr/obj/BUILDs/main-amd64-nodbg-clang/usr/main-src/amd64.amd64/tmp/usr/lib/Scrt1.o' is newer than the target... 878 file '/usr/obj/BUILDs/main-amd64-nodbg-clang/usr/main-src/amd64.amd64/tmp/legacy/usr/sbin/ln' is newer than the target... 444 file '/usr/obj/BUILDs/main-amd64-nodbg-clang/usr/main-src/amd64.amd64/tmp/usr/lib/crti.o' is newer than the target... 235 file '/usr/obj/BUILDs/main-amd64-nodbg-clang/usr/main-src/amd64.amd64/tmp/usr/lib32/crti.o' is newer than the target... 67 file '/usr/obj/BUILDs/main-amd64-nodbg-clang/usr/main-src/amd64.amd64/tmp/usr/lib/crt1.o' is newer than the target... 41 file '/usr/obj/BUILDs/main-amd64-nodbg-clang/usr/main-src/amd64.amd64/tmp/usr/lib32/libgcc_s.so' is newer than the target... 40 file '/usr/obj/BUILDs/main-amd64-nodbg-clang/usr/main-src/amd64.amd64/tmp/usr/lib/libgcc_s.so' is newer than the target... 3 file '/usr/obj/BUILDs/main-amd64-nodbg-clang/usr/main-src/amd64.amd64/tmp/legacy/usr/sbin/sh' is newer than the target... 2 file '/usr/obj/BUILDs/main-amd64-nodbg-clang/usr/main-src/amd64.amd64/lib/ncurses/tinfo/./ncurses_dll.h' is newer than the target... 1 file '/usr/obj/BUILDs/main-amd64-nodbg-clang/usr/main-src/amd64.amd64/tmp/usr/lib32/libcxxrt.so' is newer than the target... 1 file '/usr/obj/BUILDs/main-amd64-nodbg-clang/usr/main-src/amd64.amd64/tmp/usr/lib32/libcrypto.so' is newer than the target... 1 file '/usr/obj/BUILDs/main-amd64-nodbg-clang/usr/main-src/amd64.amd64/tmp/usr/lib32/libc.so.7' is newer than the target... 1 file '/usr/obj/BUILDs/main-amd64-nodbg-clang/usr/main-src/amd64.amd64/tmp/usr/lib32/Scrt1.o' is newer than the target... 1 file '/usr/obj/BUILDs/main-amd64-nodbg-clang/usr/main-src/amd64.amd64/tmp/usr/lib/libssl.so' is newer than the target... 1 file '/usr/obj/BUILDs/main-amd64-nodbg-clang/usr/main-src/amd64.amd64/tmp/usr/lib/libcxxrt.so' is newer than the target... 1 file '/usr/obj/BUILDs/main-amd64-nodbg-clang/usr/main-src/amd64.amd64/tmp/usr/lib/libctf.so' is newer than the target... 1 file '/usr/obj/BUILDs/main-amd64-nodbg-clang/usr/main-src/amd64.amd64/tmp/usr/lib/libcrypto.so' is newer than the target... 1 file '/usr/obj/BUILDs/main-amd64-nodbg-clang/usr/main-src/amd64.amd64/tmp/lib/libc.so.7' is newer than the target... (The list is already short, so no subset listed.) === Mark Millard marklmi at yahoo.com
