All of the B<dh_auto_>I<*> debhelper programs and B<dh> set
environment variables listed by B<dpkg-buildflags>, unless
-they are already set. They support DEB_BUILD_OPTIONS=noopt too.
+they are already set.
=item -
-B<dh_auto_configure> passes CFLAGS to perl F<Makefile.PL> and
-F<Build.PL>
+B<dh_auto_configure> passes B<dpkg-buildflags> CFLAGS, CPPFLAGS, and
+LDFLAGS to perl F<Makefile.PL> and F<Build.PL>
=item -