This is a known issue and will be fixed in a later version of the
autoconf suite. These errors can be safely ignored.
+ With Darwin 10, the default C compiler (gcc) will try to build
+ multi-architecture bundles. This causes problems with APR, which
+ needs to know various data-type sizes which it assumes are universal
+ for platforms. Until this is fully fixed, we recommend using the
+ '-arch i386' gcc option when building both Apache and APR.
+
==========
FreeBSD:
autoconf 2.52 creates scripts that are incompatible with the Posix
-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++.