-XO4 -xchip=generic
+================
+ Ubuntu:
+
+ You will need to ensure that you have either libtool 1.5.6
+ or 2.2.6b, or later. Expat 2.0.1 and PCRE 8.02 are also
+ recommended to be installed. If building PCRE from source,
+ you'll also need g++.