+ifneq (,$(shell which dpkg-buildflags))
+ # make does not export to $(shell) so we need to workaround
+ # (http://savannah.gnu.org/bugs/?10593)
+ dpkg_buildflags = DEB_BUILD_MAINT_OPTIONS=hardening=+all dpkg-buildflags
+ export CXXFLAGS = $(shell $(dpkg_buildflags) --get CXXFLAGS)
+ export LDFLAGS = $(shell $(dpkg_buildflags) --get LDFLAGS)
+ export CPPFLAGS = $(shell $(dpkg_buildflags) --get CPPFLAGS)
+else
+ ifneq (,$(findstring noopt,$(DEB_BUILD_OPTIONS)))
+ export CXXFLAGS = -O0 -g -Wall
+ else
+ export CXXFLAGS = -O2 -g -Wall
+ endif
+endif
+