is jigdo 64-bit safe?

[Dave Mason <dmason@sarg.ryerson.ca>]

I got this error on an Alpha:
-------------
; make
.
.
.
c++ {options} -c mktemplate.cc -o mktemplate.o
mktemplate.cc: In method `void 
MkTemplate::scanImage_mainLoop_fastForward (long unsigned int, 
RsyncSum64 *, byte *, size_t *, size_t *, size_t *, long unsigned int, 
long unsigned int, unsigned int, long unsigned int)':
mktemplate.cc:646: call of overloaded `modAdd (long unsigned int &, 
unsigned int &, size_t &)' is ambiguous
mktemplate.cc:91: candidates are: size_t {unnamed}::modAdd (long 
unsigned int, long unsigned int, long unsigned int)
mktemplate.cc:105:                 size_t {unnamed}::modAdd (long 
unsigned int, int, long unsigned int)
make[1]: *** [mktemplate.o] Error 1
make[1]: Leaving directory `/amd/software/software/jigdo-0.7.0/src'
make: *** [all] Error 2
; c++ -v
Reading specs from /usr/lib/gcc-lib/alpha-redhat-linux/2.96/specs
gcc version 2.96 20000731 (Red Hat Linux 7.1 2.96-87)
; 
-------------

and I got a similar error on Mac OS X.

Does jigdo work on non-ix86 architectures?

Thanks ../Dave