CVS build on Solaris

[SiKing]

I am trying to build CVS on several Solaris machines:
Sun Ultra-60 running Solaris 2.6 using gcc 2.95.2
Sun Ultra-80 running Solaris 2.7 using gcc 2.95.2
Sun Ultra-80 running Solaris 2.8 (32b mode) using gcc 2.95.2

Here are the compile steps that I am using:
make distclean > /dev/null
./configure --prefix=/usr/local/tools --disable-shared \
  --disable-client --disable-server >& configure.log
make CFLAGS='-O' >& make.log
make check >& make_check.log
make install >& make_install.log

Both CVS 1.10.5, and 1.10.8 fails to build (for all machines):
create_adm.c: In function `Create_Admin':
create_adm.c:42: `CLIENT_SERVER_STR' undeclared (first use in this
function)
create_adm.c:42: (Each undeclared identifier is reported only once
create_adm.c:42: for each function it appears in.)
make[1]: *** [create_adm.o] Error 1
make[1]: Leaving directory `/scratch/mark/cvs-1.10.5/src'
make: *** [all] Error 1

If I rebuild it with:
./configure --prefix=/usr/local/tools --disable-shared >& configure.log
then only the check fails (but "seems" to run OK):
FAIL: basica-o1
make[1]: *** [check] Error 1
make: *** [check] Error 2