Fix 'dpkg-buildpackage -B' FTBFS.

debian/changelog

@@ -9,6 +9,9 @@ apt (0.7.18) unstable; urgency=low
   * doc/apt-get.8.xml:
     - Advanced descriptions for 'remove' and 'purge' options.
       (Closes: #274283)
+  * debian/rules:
+    - Target 'apt' need to depend on 'build-doc'. Thanks for Peter Green.
+      Fixes FTBFS. (Closes: #504181)
 
  -- Eugene V. Lyubimkin <jackyf.devel@gmail.com>  Thu, 06 Nov 2008 22:18:15 +0200
 

debian/rules

@@ -186,7 +186,7 @@ apt-doc: build-doc
 # Build architecture-dependent files here.
 
 binary-arch: apt libapt-pkg-dev apt-utils apt-transport-https
-apt: build debian/shlibs.local
+apt: build build-doc debian/shlibs.local
 	dh_testdir -p$@
 	dh_testroot -p$@
 	dh_clean -p$@ -k