+CFLAGS = `dpkg-buildflags --get CFLAGS`
+CFLAGS += -Wall
+LDFLAGS += `dpkg-buildflags --get LDFLAGS`
+CPPFLAGS = `dpkg-buildflags --get CPPFLAGS`
+
+export BUILD_DATE = $(shell dpkg-parsechangelog | sed -n -e 's/^Date: //p')
+
+ifneq (,$(filter parallel=%,$(DEB_BUILD_OPTIONS)))
+ NUMJOBS = $(patsubst parallel=%,%,$(filter parallel=%,$(DEB_BUILD_OPTIONS)))
+ MAKEFLAGS += -j$(NUMJOBS)
+endif
+