From 8d9dff23f206cb86aed9857a985ed09cd38eb5ac Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Dag-Erling=20Sm=C3=B8rgrav?= <des@FreeBSD.org>
Date: Sat, 6 Jun 2026 09:54:21 +0200
Subject: [PATCH] check-old-libs: Show information about packages

If pkg is installed, for each old library found to still be present,
check if any installed packages either provide or require the library,
and inform the user.

MFC after:	1 week
Reviewed by:	markj
Differential Revision:	https://reviews.freebsd.org/D53977
---
 Makefile.inc1 | 9 +++++++++
 1 file changed, 9 insertions(+)

diff --git a/Makefile.inc1 b/Makefile.inc1
index 2927054c2e8..f7d68dd0b4b 100644
--- a/Makefile.inc1
+++ b/Makefile.inc1
@@ -3816,6 +3816,15 @@ check-old-libs: .PHONY
 	while read file; do \
 		if [ -f "${DESTDIR}/$${file}" -o -L "${DESTDIR}/$${file}" ]; then \
 			echo "${DESTDIR}/$${file}"; \
+			if packages=$$(${LOCALBASE:Q}/sbin/pkg -r ${DESTDIR:U/} \
+			    shlib -qP $${file##*/} 2>/dev/null) && \
+			    [ -n "$${packages}" ]; then \
+				echo "    also provided by:" $${packages}; \
+			elif packages=$$(${LOCALBASE:Q}/sbin/pkg -r ${DESTDIR:U/} \
+			    shlib -qR $${file##*/} 2>/dev/null) && \
+			    [ -n "$${packages}" ]; then \
+				echo "    required by:" $${packages}; \
+			fi; \
 		fi; \
 		for ext in debug symbols; do \
 		  if [ -f "${DESTDIR}${DEBUGDIR}/$${file}.$${ext}" ]; then \