diff -Nru calculix-ccx-2.17/debian/changelog calculix-ccx-2.17/debian/changelog
--- calculix-ccx-2.17/debian/changelog	2021-02-07 07:19:20.000000000 +0000
+++ calculix-ccx-2.17/debian/changelog	2021-02-11 13:19:17.000000000 +0000
@@ -1,3 +1,15 @@
+calculix-ccx (2.17-3) unstable; urgency=medium
+
+  * Team upload.
+  * Propagate hardening options by adding LDFLAGS
+    - This fixes failures with blhc and is intended
+      as a targeted fix
+  * Declare compliance with policy 4.5.1
+  * Bump watch file version to 4
+  * switch gnu license URL to more secure https
+
+ -- Nilesh Patra <npatra974@gmail.com>  Thu, 11 Feb 2021 18:49:17 +0530
+
 calculix-ccx (2.17-2) unstable; urgency=high
 
   * Team Upload.
diff -Nru calculix-ccx-2.17/debian/control calculix-ccx-2.17/debian/control
--- calculix-ccx-2.17/debian/control	2021-02-07 07:14:30.000000000 +0000
+++ calculix-ccx-2.17/debian/control	2021-02-11 13:17:07.000000000 +0000
@@ -8,7 +8,7 @@
                libarpack2-dev,
                libspooles-dev,
                liblapack-dev
-Standards-Version: 4.5.0
+Standards-Version: 4.5.1
 Rules-Requires-Root: no
 Vcs-Browser: https://salsa.debian.org/science-team/calculix-ccx
 Vcs-Git: https://salsa.debian.org/science-team/calculix-ccx.git
diff -Nru calculix-ccx-2.17/debian/copyright calculix-ccx-2.17/debian/copyright
--- calculix-ccx-2.17/debian/copyright	2021-02-07 07:14:30.000000000 +0000
+++ calculix-ccx-2.17/debian/copyright	2021-02-11 13:19:17.000000000 +0000
@@ -35,7 +35,7 @@
  GNU General Public License for more details.
  .
  You should have received a copy of the GNU General Public License
- along with this program. If not, see <http://www.gnu.org/licenses/>
+ along with this program. If not, see <https://www.gnu.org/licenses/>
  .
  On Debian systems, the complete text of the GNU General
  Public License version 2 can be found in "/usr/share/common-licenses/GPL-2".
diff -Nru calculix-ccx-2.17/debian/patches/0003-Add-hardening-flag.patch calculix-ccx-2.17/debian/patches/0003-Add-hardening-flag.patch
--- calculix-ccx-2.17/debian/patches/0003-Add-hardening-flag.patch	1970-01-01 00:00:00.000000000 +0000
+++ calculix-ccx-2.17/debian/patches/0003-Add-hardening-flag.patch	2021-02-08 06:53:19.000000000 +0000
@@ -0,0 +1,14 @@
+Description: Propagate hardening options by adding LDFLAGS
+Author: Nilesh Patra <npatra974@gmail.com>
+Last-Update: 2021-02-08
+--- a/ccx_2.17/src/Makefile
++++ b/ccx_2.17/src/Makefile
+@@ -21,7 +21,7 @@
+ LIBS =  -lspooles -lpthread -larpack -llapack -lblas -lm -lc
+ 
+ ccx_2.17: $(OCCXMAIN) ccx_2.17.a
+-	$(CC) $(CFLAGS) -c ccx_2.17.c; $(FC)  -Wall -O2 -o $@ $(OCCXMAIN) ccx_2.17.a $(LIBS)
++	$(CC) $(CFLAGS) -c ccx_2.17.c; $(FC)  -Wall -O2 -o $@ $(OCCXMAIN) ccx_2.17.a $(LIBS) $(LDFLAGS)
+ 
+ ccx_2.17.a: $(OCCXF) $(OCCXC)
+ 	ar vr $@ $?
diff -Nru calculix-ccx-2.17/debian/patches/series calculix-ccx-2.17/debian/patches/series
--- calculix-ccx-2.17/debian/patches/series	2021-02-07 07:14:30.000000000 +0000
+++ calculix-ccx-2.17/debian/patches/series	2021-02-08 06:40:24.000000000 +0000
@@ -1,2 +1,3 @@
 0001-Adjust-Makefile-for-Build-with-Debian.patch
 0002-Fixed-spelling-errors.patch
+0003-Add-hardening-flag.patch
diff -Nru calculix-ccx-2.17/debian/watch calculix-ccx-2.17/debian/watch
--- calculix-ccx-2.17/debian/watch	2021-02-07 07:14:30.000000000 +0000
+++ calculix-ccx-2.17/debian/watch	2021-02-11 13:19:17.000000000 +0000
@@ -1,2 +1,2 @@
-version=3
+version=4
 http://www.dhondt.de/ccx_(\d.*)\.src\.(?:tgz|tbz2|txz|tar\.(?:gz|bz2|xz))