diff -Nru cctools-7.1.2/debian/changelog cctools-7.1.2/debian/changelog
--- cctools-7.1.2/debian/changelog	2020-05-05 15:46:08.000000000 +0000
+++ cctools-7.1.2/debian/changelog	2020-05-06 20:16:49.000000000 +0000
@@ -1,3 +1,10 @@
+cctools (7.1.2-1ubuntu1) groovy; urgency=low
+
+  * Merge from Debian unstable.  Remaining changes:
+    - Fix build by using -O0
+
+ -- Gianfranco Costamagna <locutusofborg@debian.org>  Wed, 06 May 2020 22:16:49 +0200
+
 cctools (7.1.2-1) unstable; urgency=medium
 
   * New upstream release
@@ -11,6 +18,13 @@
 
  -- Alastair McKinstry <mckinstry@debian.org>  Tue, 05 May 2020 16:46:08 +0100
 
+cctools (7.0.22-1ubuntu1) focal; urgency=low
+
+  * Merge from Debian unstable.  Remaining changes:
+    - Fix build by using -O0
+
+ -- Gianfranco Costamagna <locutusofborg@debian.org>  Tue, 17 Mar 2020 18:32:02 +0100
+
 cctools (7.0.22-1) unstable; urgency=medium
 
   * New upstream release
@@ -20,6 +34,12 @@
 
  -- Alastair McKinstry <mckinstry@debian.org>  Mon, 16 Mar 2020 14:38:55 +0000
 
+cctools (7.0.9-5ubuntu1) focal; urgency=medium
+
+  * Fix build by using -O0
+
+ -- Gianfranco Costamagna <locutusofborg@debian.org>  Wed, 22 Jan 2020 16:20:22 +0100
+
 cctools (7.0.9-5) unstable; urgency=medium
 
   * Add dh-python to Build-Depends for --with python3.
diff -Nru cctools-7.1.2/debian/rules cctools-7.1.2/debian/rules
--- cctools-7.1.2/debian/rules	2020-05-05 15:46:08.000000000 +0000
+++ cctools-7.1.2/debian/rules	2020-05-05 21:54:23.000000000 +0000
@@ -9,7 +9,7 @@
 	dh $@ 
 
 PY3:=$(shell py3versions -d)
-CFLAGS:=$(shell dpkg-buildflags --get CFLAGS) -I /usr/include/$(PY3)
+CFLAGS:=$(shell dpkg-buildflags --get CFLAGS) -I /usr/include/$(PY3) -O0
 
 override_dh_auto_configure:
 	# disable warning about unused results (necessary because warning is error