From 143ea7b5463a1b5bbe0709f7aa9c5c70582ed566 Mon Sep 17 00:00:00 2001
From: Bart Van Assche <bvanassche@acm.org>
Date: Thu, 20 May 2021 04:01:24 +0000
Subject: [PATCH] debian: make sure KVER and KDIR are visible to dpkg build

The debuild clears up the environment, thus the essential SCST variables
KVER and KDIR are cleared out. This patch fixes it.

Note: technically, `debild` supports `--preserve-env` option. But in
reality making use of it makes no difference, variables still do not
appear. Work around it by using DEB_foo_SET from `man dpkg-buildflags`


git-svn-id: http://svn.code.sf.net/p/scst/svn/trunk@9423 d57e44dd-8a1f-0410-8b47-8ef2f437770f
---
 Makefile     | 2 +-
 debian/rules | 5 +++++
 2 files changed, 6 insertions(+), 1 deletion(-)

diff --git a/Makefile b/Makefile
index 92831a6d4..77ad72294 100644
--- a/Makefile
+++ b/Makefile
@@ -387,7 +387,7 @@ dpkg: ../scst_$(VERSION).orig.tar.gz
 	else								\
 	  buildopts+=(-j4);						\
 	fi &&								\
-	debuild "$${buildopts[@]}" --lintian-opts --profile debian &&   \
+	DEB_KVER_SET=$(KVER) DEB_KDIR_SET=$(KDIR) debuild "$${buildopts[@]}" --lintian-opts --profile debian && \
 	mkdir -p dpkg &&						\
 	for f in "$${output_files[@]}" ../scst_$(VERSION).orig.tar.[gx]z; do\
 		mv $$f dpkg || true;					\
diff --git a/debian/rules b/debian/rules
index f78e364a0..8342862e9 100755
--- a/debian/rules
+++ b/debian/rules
@@ -17,6 +17,11 @@ SUBDIRS=scst fcst iscsi-scst qla2x00t/qla2x00-target scst_local scstadmin srpt
 DESTDIR=$(CURDIR)/debian/tmp
 VERSION:=$(shell head -n1 debian/changelog | sed 's/.*(\([0-9.]*\).*).*/\1/')
 
+# rules won't see variables unless they're using DEB_foo_SET syntax. So use that as
+# an intermediary. Also, export variables for sub-makes to be able to see them.
+export KVER=$(DEB_KVER_SET)
+export KDIR=$(DEB_KDIR_SET)
+
 %:
 	echo "*** dh $@ ***"
 	dh $@