'checksum' is noisy, especially when working on ports with lots of distfiles.
Take net/go-ipfs for example with 1996(!) files in distinfo:

	$ cat checksum.sh
	make checksum "$@" | awk '
	    /up to date/ {up++; if (up > 1) next}
	    /SHA256.*OK/ {ok++; if (ok > 1) next}
	    {print}
	    END {print "skipped up/ok", up, ok}
	'

	$ sh ./checksum.sh CHECKSUM_QUIET=No
	===>  Checking files for kubo-0.26.0
	`/home/distfiles/kubo-v0.26.0.zip' is up to date.
	>> (SHA256) kubo-v0.26.0.zip: OK
	skipped up/ok 1996 1996

In this usual case, I'd like to see all good cases folded so the output fits
on a page, even for monster ports.

Here's a WIP diff instrumenting cksum(1) -q for the SHA256 lines:

	$ sh ./checksum.sh CHECKSUM_QUIET=Yes
	===>  Checking files for kubo-0.26.0
	`/home/distfiles/kubo-v0.26.0.zip' is up to date.
	>> (SHA256) all files: OK
	skipped up/ok 1996 1

Errors, e.g. incorrect checksum, are still printed:

	$ sed -i 1s/.=$/a=/ distinfo
	$ sh ./checksum.sh CHECKSUM_QUIET=Yes
	===>  Checking files for kubo-0.26.0
	`/home/distfiles/kubo-v0.26.0.zip' is up to date.
	>> (SHA256) go_modules/bazil.org/fuse/@v/v0.0.0-20200117225306-7b5117fecadc.mod: FAILED
	Make sure the Makefile and /p/net/go-ipfs/distinfo
	from the OpenBSD main archive, type
		make REFETCH=true [other args]
	*** Error 1 in . (/usr/ports/infrastructure/mk/bsd.port.mk:2652 '_internal-checksum': @cd /home/distfiles; OK=true; list=''; files='';  set ...)
	*** Error 2 in /p/net/go-ipfs (/usr/ports/infrastructure/mk/bsd.port.mk:2717 'checksum': @lock=kubo-0.26.0;  export _LOCKS_HELD=" kubo-0.26....)
	skipped up/ok 1997 


So far so good, I haven't looked into the 'up to date' part, yet.

Anyone interested in such an opt-in?


Index: bsd.port.mk
===================================================================
RCS file: /cvs/ports/infrastructure/mk/bsd.port.mk,v
diff -u -p -r1.1639 bsd.port.mk
--- bsd.port.mk	6 Oct 2024 10:24:24 -0000	1.1639
+++ bsd.port.mk	6 Oct 2024 20:06:42 -0000
@@ -737,6 +737,11 @@ _PMAKE_COOKIE = ${_PBUILD} ${_MAKE_COOKI
 
 GMAKE ?= gmake
 
+_CKSUM = cksum
+CHECKSUM_QUIET ?= No
+.if ${CHECKSUM_QUIET:L} == "yes"
+_CKSUM += -q
+.endif
 CHECKSUM_FILE ?= ${.CURDIR}/distinfo
 
 # Current digest algorithm
@@ -2614,11 +2619,11 @@ _internal-checksum: _internal-fetch
 	  exit 1; \
 	fi
 	@cd ${DISTDIR}; OK=true; list=''; files=''; \
+	  set -o pipefail; \
 	  for file in ${CHECKSUMFILES}; do \
 		if set -- $$(grep "^${_CIPHER:U} ($$file)" ${CHECKSUM_FILE}); \
 		then \
-			echo -n '>> '; \
-			if ! echo "$$@" | cksum -c; then \
+			if ! echo "$$@" | ${_CKSUM} -c | sed 's/^/>> /'; then \
 				list="$$list $$file ${_CIPHER} $$4"; \
 				files="$$files ${DISTDIR}/$$file"; \
 				OK=false; \
@@ -2642,6 +2647,8 @@ _internal-checksum: _internal-fetch
 		  echo "\tmake REFETCH=true [other args]"; \
 		  exit 1; \
 		fi; \
+	  elif [ ${CHECKSUM_QUIET:L} = yes ]; then \
+		  ${ECHO_MSG} ">> (${_CIPHER:U}) all files: OK"; \
 	  fi
 .    endif
 .  endif