-download and build libraries from sources. None of them are vital for
-running Emacs; however, note that Emacs will not be able to use
-colored icons in the toolbar if XPM support is not compiled in.
-
-Here's the list of some of these optional libraries, and the URLs
-where they can be found (in the unlikely event that your distribution
-does not provide them):
-
- . libXaw3d http://directory.fsf.org/project/xaw3d/
- . libxpm for XPM: http://www.x.org/releases/current/src/lib/
- . libpng for PNG: http://www.libpng.org/
- . libz (for PNG): http://www.zlib.net/
- . libjpeg for JPEG: http://www.ijg.org/
- . libtiff for TIFF: http://www.libtiff.org/
- . libgif for GIF: http://sourceforge.net/projects/giflib/
-
-Emacs will configure itself to build with these libraries if the
-`configure' script finds them on your system, unless you supply the
-appropriate --without-LIB option. In some cases, older versions of
-these libraries won't work because some routines are missing, and
-configure should avoid such old versions. If that happens, use the
---without-LIB options to `configure', if you need to.
+download and build libraries from sources. Although none of them are
+essential for running Emacs, some are important enough that
+'configure' will report an error if they are absent from a system that
+has X11 support, unless 'configure' is specifically told to omit them.
+
+Here's a list of some of these libraries, and the URLs where they
+can be found (in the unlikely event that your distribution does not
+provide them). By default, libraries marked with an X are required if
+X11 is being used.
+
+ libXaw3d http://directory.fsf.org/project/xaw3d/
+ X libxpm for XPM: http://www.x.org/releases/current/src/lib/
+ X libpng for PNG: http://www.libpng.org/
+ libz (for PNG): http://www.zlib.net/
+ X libjpeg for JPEG: http://www.ijg.org/
+ X libtiff for TIFF: http://www.remotesensing.org/libtiff/
+ X libgif for GIF: http://sourceforge.net/projects/giflib/
+ librsvg2 for SVG: http://wiki.gnome.org/action/show/Projects/LibRsvg
+
+If you supply the appropriate --without-LIB option, 'configure' will
+omit the corresponding library from Emacs, even if that makes for a
+less-pleasant user interface. Otherwise, Emacs will configure itself
+to build with these libraries if 'configure' finds them on your
+system, and 'configure' will complain and exit if a library marked 'X'
+is not found on a system that uses X11. Use --without-LIB if your
+version of a library won't work because some routines are missing.