diff -pruN 1.8.1+dfsg1-6/debian/changelog 1.8.1+dfsg1-6ubuntu1/debian/changelog
--- 1.8.1+dfsg1-6/debian/changelog	2018-09-14 19:27:30.000000000 +0000
+++ 1.8.1+dfsg1-6ubuntu1/debian/changelog	2018-09-15 08:39:41.000000000 +0000
@@ -1,3 +1,9 @@
+pcl (1.8.1+dfsg1-6ubuntu1) cosmic; urgency=medium
+
+  * Reduce debug info everywhere in Ubuntu, build in parallel again
+
+ -- Gianfranco Costamagna <locutusofborg@debian.org>  Sat, 15 Sep 2018 10:39:41 +0200
+
 pcl (1.8.1+dfsg1-6) unstable; urgency=medium
 
   [ Jochen Sprickerhof ]
diff -pruN 1.8.1+dfsg1-6/debian/rules 1.8.1+dfsg1-6ubuntu1/debian/rules
--- 1.8.1+dfsg1-6/debian/rules	2018-09-14 19:23:35.000000000 +0000
+++ 1.8.1+dfsg1-6ubuntu1/debian/rules	2018-09-15 08:39:41.000000000 +0000
@@ -5,27 +5,18 @@ export DEB_BUILD_MAINT_OPTIONS=hardening
 
 CPPFLAGS:=$(shell dpkg-buildflags --get CPPFLAGS)
 CFLAGS:=$(shell dpkg-buildflags --get CFLAGS)
-CXXFLAGS:=$(shell dpkg-buildflags --get CXXFLAGS)
+CXXFLAGS:=$(shell dpkg-buildflags --get CXXFLAGS) -g1
 LDFLAGS:=$(shell dpkg-buildflags --get LDFLAGS) -Wl,--as-needed
 
 CFLAGS+=$(CPPFLAGS)
 CXXFLAGS+=$(CPPFLAGS)
 
-ifeq (32,$(DEB_HOST_ARCH_BITS))
-	CXXFLAGS+=-g1
-endif
 
 BUILD_DOC = $(if $(shell dh_listpackages | grep libpcl-doc),-DWITH_DOCS=ON)
 
 # Multiarch.
 DEB_HOST_MULTIARCH ?= $(shell dpkg-architecture -qDEB_HOST_MULTIARCH)
 
-ifeq ($(shell dpkg-vendor --derives-from Ubuntu && echo yes),yes)
-  PARALLEL=--max-parallel=2
-else
-  PARALLEL=
-endif
-
 .PHONY: override_dh_auto_configure \
 	override_dh_install \
 	override_dh_installchangelogs
@@ -99,4 +90,4 @@ override_dh_installchangelogs:
 
 
 %:
-	dh  $@ $(PARALLEL) --builddirectory=build
+	dh  $@ --builddirectory=build