+If you are seeing this error message during configure:
+ "Can't find X11 library"
+it means you are missing some libX11 files.
+On Debian-based systems, install libX11-dev with this command:
+ apt-get install libX11-dev
+
+If you are seeing this error message during configure:
+ "Can't find header file for library Xpm"
+it means you are missing some libxpm files.
+On Debian-based systems, install libxpm-dev with this command:
+ apt-get install libxpm-dev
+
+If you are seeing this error message during configure:
+ "Can't find header file for library Xext"
+it means you are missing some libxext files.
+On Debian-based systems, install libxext-dev with this command:
+ apt-get install libxext-dev
+
+If you want to use SSL for your POP or IMAP account, you must install openssl:
+ http://www.openssl.org/
+On Debian-based systems, install libsndfile with this command:
+ apt-get install libssl-dev
+
+If you want to have support for audio notification using WAV or AU sound files,
+you must install the 'libsndfile' library:
+ http://www.zip.com.au/~erikd/libsndfile/
+On Debian-based systems, install libsndfile with this command:
+ apt-get install libsndfile1-dev