alpha-dec-osf5.0 Can't compile libstdc++-v3/libsupc++/pure.cc

[Greg Freemyer <freemyer at NorcrossGroup dot com>]

I am trying to get libstd++v3 to compile on a Tru64 V5.0a machine (alpha-dec-osf5.0) from the 3.0 branch.

I am having trouble with 

	libstdc++-v3/libsupc++/pure.cc

Any suggestions to fix the below would be appreciated.

Thanks
Greg Freemyer

>>
/usr/local/src/gcc.devel/gcc/objdir-gcc/gcc/g++ -B/usr/local/src/gcc.devel/gcc/objdir-gcc/gcc/ -nostdinc++ -L/usr/local/src/gcc.devel/gcc/objdir-gcc/alpha-dec-osf5.0/libstdc++-v3/src -L/usr/local/src/gcc.devel/gcc/objdir-gcc/alpha-dec-osf5.0/libstdc++-v3/src/.libs -B/usr/local/alpha-dec-osf5.0/bin/ -B/usr/local/alpha-dec-osf5.0/lib/ -isystem /usr/local/alpha-dec-osf5.0/include -I../../../../libstdc++-v3/../gcc -I../../../../libstdc++-v3/../include -I../../../../libstdc++-v3/include -I../../../../libstdc++-v3/include/std -I../../../../libstdc++-v3/include/c_std -I../include -I../../../../libstdc++-v3/libsupc++ -g -O2 -mieee -fno-implicit-templates -Wall -Wno-format -W -Wwrite-strings -Winline -fdiagnostics-show-location=once -g -c ./../../../libstdc++-v3/libsupc++/pure.cc   -DPIC -o pure.o

/usr/local/src/gcc.devel/gcc/objdir-gcc/gcc/include/unistd.h: In function `void    __cxa_pure_virtual()':

/usr/local/src/gcc.devel/gcc/objdir-gcc/gcc/include/unistd.h:98: too many 
   arguments to function `int write()'

../../../../libstdc++-v3/libsupc++/pure.cc:52: at this point in file
make[3]: *** [pure.lo] Error 1