🚀 go-pugleaf

Can someone help me with this??  I am desparately trying to compile
groff-1.10 on a Sparc IPX running SunOS 4.1.3.  I'm using gcc 2.7.0
with libg++.  Every time I try to make (with either gmake or Sun's make
I get this:

/home/jacke/src/groff-1.10>make
c++ -I. -I. -I../include -I./../include -DHAVE_UNISTD_H=1
-DHAVE_DIRENT_H=1 -DHA
VE_LIMITS_H=1 -DHAVE_SYS_DIR_H=1 -DHAVE_STDLIB_H=1
-DUNISTD_H_DECLARES_GETOPT=1
-DSTDLIB_H_DECLARES_PUTENV=1 -DSTDIO_H_DECLARES_POPEN=1
-DSTDIO_H_DECLARES_PCLOS
E=1 -DHAVE_CC_OSFCN_H=1 -DHAVE_CC_LIMITS_H=1 -DRETSIGTYPE=void
-DHAVE_STRUCT_EXC
EPTION=1 -DHAVE_MMAP=1 -DHAVE_RENAME=1 -DHAVE_MKSTEMP=1
-DWCOREFLAG=0200 -g -O
-c string.cc

string.cc: In method `int string::search(char) const':
string.cc:273: call of overloaded `memchr' is ambiguous
/usr/local/lib/g++-include/std/cstring.h:61: candidates are:
memchr(void *, int,
 long unsigned int)
/usr/local/lib/g++-include/std/cstring.h:58:                
memchr(const void *
, int, long unsigned int)
*** Error code 1
make: Fatal error: Command failed for target `string.o'
Current working directory /usr/local/src/groff-1.10/libgroff
*** Error code 1
make: Fatal error: Command failed for target `libgroff'
Current working directory /usr/local/src/groff-1.10
*** Error code 1
make: Fatal error: Command failed for target `all'

Can any C++ gurus out there figure out what the problem is, and more
importantly, how to fix it?

Please help if you can!  Any assistance will be greatly appreciated. 
Thanks!