[plt-scheme] plt scheme on x86_64/amd64

Hi,
I am using gentoo 64 bit on my amd 64, however I am having trouble
compiling the 209 build of plt scheme which I downloaded from
drscheme.org
Here are the errors are the end of the compile process (make install).
Is work being done to get it to compile on x86_64?
Are there some specific things I need to do to get this to compile and install?
I know x86_64 isn't mentioned in the README, but I thought I would try it.
Thanks,
Neil

setup-plt: Error during Compiling .zos for sgl
(/home/neil/Downloads/plt/collects/sgl)
setup-plt:   default-load-handler: cannot open input file:
"/home/neil/Downloads/plt/collects/sgl/gl-vectors/gl-double-vector.ss"
(No such file or directory; errno=2)
setup-plt: Error during Early Install for SSL Driver
(/home/neil/Downloads/plt/collects/openssl)
setup-plt:   make: Failed to make
compiled/native/x86_64-linux/mzssl.so; link-extension: command failed
setup-plt: Error during Early Install for homogeneous-vectors
(/home/neil/Downloads/plt/collects/srfi/4)
setup-plt:   make: Failed to make
compiled/native/x86_64-linux/homo-f64-vector-prims.so; make: Failed to
make compiled/native/x86_64-linux/homo-f64-vector-prims.so;
link-extension: command failed
setup-plt: Error during Early Install for sgl
(/home/neil/Downloads/plt/collects/sgl)
setup-plt:   make: Failed to make
gl-vectors/compiled/native/x86_64-linux/gl-double-vector.so;
link-extension: command failed
setup-plt: Error during Early Install for Plot library
(/home/neil/Downloads/plt/collects/plot)
setup-plt:   make: Failed to make
/home/neil/Downloads/plt/collects/plot/compiled/native/x86_64-linux/fit-low-level.so;
link-extension: command failed
install: Errors in compilation process! (1)
make[1]: *** [inplace-finish] Error 1
make[1]: Leaving directory `/home/neil/Downloads/plt/src'
make: *** [install] Error 2