While trying to build up latest (1.1.0) libtheora, I got following:
% ./configure checking build system type... ./config.guess: unable to guess system type This script, last modified 2002-07-23, has failed to recognize the operating system you are using. It is advised that you download the most up to date version of the config scripts from ftp://ftp.gnu.org/pub/gnu/config/ If the version you run (./config.guess) is already up to date, please send the following data and any information you think might be pertinent to <email@example.com> in order to provide the needed information to handle your system. config.guess timestamp = 2002-07-23 uname -m = mips64 uname -r = 220.127.116.11-medan uname -s = Linux uname -v = #1 PREEMPT Thu Feb 5 11:31:12 CST 2009 /usr/bin/uname -p = /bin/uname -X = hostinfo = /bin/universe = /usr/bin/arch -k = /bin/arch = /usr/bin/oslevel = /usr/convex/getsysinfo = UNAME_MACHINE = mips64 UNAME_RELEASE = 18.104.22.168-medan UNAME_SYSTEM = Linux UNAME_VERSION = #1 PREEMPT Thu Feb 5 11:31:12 CST 2009 configure: error: cannot guess build type; you must specify one
After an updating of config.guess (following ftp://ftp.gnu.org/pub/gnu/config/ link) everything after that works fine.