+4. [Useful to simplify detection of Qt:] pkg-config >= 0.9.0. Again,
+the simplest way is through MacPorts:
+
+ sudo port install pkgconfig
+
+
+5. To build with included spell checker (ASpell):
+The aspell library is GPL-licensed and can be downloaded from
+ftp://ftp.gnu.org/gnu/aspell or one of the mirrors.
+At the time of writing aspell-0.60.tar.gz is the current version.
+Unpack the tarball in the same directory where you placed the
+svn checkout or LyX tarball.