If we move from the current automake to CMake, build becomes portable across multiple platforms. Prior to this patch, Avro C++ was building on Cygwin but was crashing. I've tested this on Ubuntu 10.04 and Cygwin.
There are problems making it work with Visual Studio 2008 Express, not because of CMake, but because the current build procedure needs Flex, Bison and python. Visual Studio seems to have trouble with these three.