[Mono-list] mono 1.0.5 install problem on ubuntu warty linux

[simon]

Im trying to install mono-1.0.5 from source on ubuntu warty release
Ive downloaded the following files from
http://www.mono-project.com/downloads/index.html
    *  Mono Runtime 1.0.5
    * Mono Class Libraries and C# Compiler 1.0.5
    * libgdiplus 1.0.5
    * Gtk# 1.0.4
    * MonoDoc 1.0.5
    * MonoDevelop 0.5.1
    * Apache Mono module 1.0.5 (mod_mono)
    * XSP web server 1.0.5

I extracted all and am now trying to execute

./configure --prefix=/usr in mono-1.0.5 directory, i get the following 
output

/checking build system type... i686-pc-linux
checking host system type... i686-pc-linux
checking target system type... i686-pc-linux
checking for a BSD-compatible install... /usr/bin/install -c
checking whether build environment is sane... yes
checking for gawk... no
checking for mawk... mawk
checking whether make sets $(MAKE)... yes
checking whether to enable maintainer-specific portions of Makefiles... no
checking whether ln -s works... yes
checking host platform characteristics... ok
checking for gcc... gcc
checking for gcc... (cached) gcc
checking for C compiler default output file name... configure: error: C 
compiler  cannot create executables
See `config.log' for more details.
/
The last 10 or so lines from config.log are

/## ----------- ##
## confdefs.h. ##
## ----------- ##

#define PACKAGE "mono"
#define PACKAGE_BUGREPORT ""
#define PACKAGE_NAME ""
#define PACKAGE_STRING ""
#define PACKAGE_TARNAME ""
#define PACKAGE_VERSION ""
#define VERSION "1.0.5"

configure: exit 77/


This seemed to be broken so i tried to do
sudo apt-get install mono
which worked fine, but i want the newest stable release not the old on 
in the repository.

Does anyone know what is causing the config issue of mono?
If i get it to work and i do ./configure --prefix=/usr and then run make 
and make install will it install of the top of the older version i got 
from apt-get?

thanks

Simon