From f281207f9ea5e457111109729dcc9e6ab65aa573 Mon Sep 17 00:00:00 2001
From: Konstantin Pavlov <thresh@nginx.com>
Date: Fri, 17 May 2024 16:49:39 -0700
Subject: Packaging: fix build-depends detection on debian-based systems

dpkg-query -W will show information about the package if any other
package references it, even when the queried package is not installed.
The fix is to query for an actual status of a needed build dependency.
---
 pkg/deb/Makefile | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/pkg/deb/Makefile b/pkg/deb/Makefile
index beae5120..a0c226e2 100644
--- a/pkg/deb/Makefile
+++ b/pkg/deb/Makefile
@@ -203,8 +203,8 @@ check-build-depends-%:
 	esac ; \
 	not_installed= ; \
 	for pkg in $${pkgs}; do \
-		dpkg-query -W $${pkg} >/dev/null 2>&1 ; \
-		if [ $$? -ne 0 ]; then \
+		i=$$(dpkg-query -f '$${db:Status-Status}' -W $${pkg} 2>/dev/null) ; \
+		if [ $$? -ne 0 -o "$${i}" != "installed" ]; then \
 			not_installed="$${not_installed} $${pkg}" ; \
 		fi ; \
 	done ; \
-- 
cgit