sendmail 설치시 에러가...

reating /data1/down/sendmail-8.12.10/obj.SunOS.5.7.sun4/vacation using /data1/down/sendmail-8.12.10/devtools/OS/SunOS.5.7
Making dependencies in /data1/down/sendmail-8.12.10/obj.SunOS.5.7.sun4/vacation
make[1]: Entering directory `/data1/down/sendmail-8.12.10/obj.SunOS.5.7.sun4/vacation'
if [ -r /usr/include/sysexits.h ];
then
        ln -s /usr/include/sysexits.h;
fi
rm -f sm_os.h
ln -f -s ../../include/sm/os/sm_os_sunos.h sm_os.h
gcc -M -I. -I../../sendmail   -I../../include  -DNDBM -DNIS -DNISPLUS -DMAP_REGEX -DSOLARIS=20700 -DNOT_SENDMAIL   vacation.c    >> Makefile
make[1]: Leaving directory `/data1/down/sendmail-8.12.10/obj.SunOS.5.7.sun4/vacation'
Making in /data1/down/sendmail-8.12.10/obj.SunOS.5.7.sun4/vacation
make[1]: Entering directory `/data1/down/sendmail-8.12.10/obj.SunOS.5.7.sun4/vacation'
(cd ../../libsm; sh Build )
Configuration: pfx=, os=SunOS, rel=5.7, rbase=5, rroot=5.7, arch=sun4, sfx=, variant=optimized
Making in /data1/down/sendmail-8.12.10/obj.SunOS.5.7.sun4/libsm
make[2]: Entering directory `/data1/down/sendmail-8.12.10/obj.SunOS.5.7.sun4/libsm'
gcc -O -I. -I../../include  -DNDBM -DNIS -DNISPLUS -DMAP_REGEX -DSOLARIS=20700      -c -o fseek.o fseek.c
In file included from fseek.c:18:
/usr/include/sys/stat.h:253: syntax error before "blksize_t"
/usr/include/sys/stat.h:257: syntax error before '}' token
/usr/include/sys/stat.h:313: syntax error before "blksize_t"
/usr/include/sys/stat.h:314: conflicting types for `st_blocks'
/usr/include/sys/stat.h:254: previous declaration of `st_blocks'
/usr/include/sys/stat.h:317: syntax error before '}' token
fseek.c: In function `sm_io_seek':
fseek.c:85: storage size of `st' isn't known
make[2]: *** [fseek.o] Error 1
make[2]: Leaving directory `/data1/down/sendmail-8.12.10/obj.SunOS.5.7.sun4/libsm'
make[1]: *** [/data1/down/sendmail-8.12.10/obj.SunOS.5.7.sun4/libsm/libsm.a] Error 2
make[1]: Leaving directory `/data1/down/sendmail-8.12.10/obj.SunOS.5.7.sun4/vacation'
make: *** [all] Error 2

위와 같이 에러가 납니다.(sh Build)

해결 방법 아시면 좀 알려 주세요...

참고>  solaris 7(sparc).  sendmail-8.12.10   입니다.