x86_64 configure problem

On an x86_64 machine I'm finding that I cannot configure --with-python
without the attached patch. Undoubtedly there is a better way to fix
this -- any suggestions?

Another configure issue: I find that --enable-depend breaks parallel builds:

make -j 2
[...]
make[3]: Entering directory
`/opt/src/pgsql-cvs/pgsql-8.0/src/backend/utils/mb/conversion_procs/euc_tw_and_big5'
gcc -O2 -fno-strict-aliasing -g -Wall -Wmissing-prototypes
-Wmissing-declarations -fpic -I../../../../../../src/include
-D_GNU_SOURCE -I/usr/include/et -c -o big5.o big5.c -MMD
gcc -O2 -fno-strict-aliasing -g -Wall -Wmissing-prototypes
-Wmissing-declarations -fpic -I../../../../../../src/include
-D_GNU_SOURCE -I/usr/include/et -c -o euc_tw_and_big5.o
euc_tw_and_big5.c -MMD
mkdir: cannot create directory `.deps': File exists
make[3]: *** [big5.o] Error 1
make[3]: *** Deleting file `big5.o'
make[3]: *** Waiting for unfinished jobs....
make[3]: *** Waiting for unfinished jobs....
make[3]: *** Waiting for unfinished jobs....
make[3]: Leaving directory
`/opt/src/pgsql-cvs/pgsql-8.0/src/backend/utils/mb/conversion_procs/euc_tw_and_big5'
make[2]: *** [all] Error 2
make[2]: Leaving directory
`/opt/src/pgsql-cvs/pgsql-8.0/src/backend/utils/mb/conversion_procs'
make[1]: *** [all] Error 2
make[1]: Leaving directory `/opt/src/pgsql-cvs/pgsql-8.0/src'
make: *** [all] Error 2

Any ideas about how to fix this?

Thanks,

Joe