I have SUN Solaris 8 !I have error with gnokki-0.4.3

[guardopi]

Hello!!!
I have SUN Solaris 8 !I have error with gnokki-0.4.3
then ./configure I have write "make" but that's sequence error:


sh-2.03# make
gmake -C common/phones
gmake[1]: Entering directory `/usr/local/gnokii-0.4.3/common/phones'
gmake[1]: Nothing to be done for `all'.
gmake[1]: Leaving directory `/usr/local/gnokii-0.4.3/common/phones'
gmake -C common/links
gmake[1]: Entering directory `/usr/local/gnokii-0.4.3/common/links'
gmake[1]: Nothing to be done for `all'.
gmake[1]: Leaving directory `/usr/local/gnokii-0.4.3/common/links'
gmake -C common/devices
gmake[1]: Entering directory `/usr/local/gnokii-0.4.3/common/devices'
gcc -O2 -Wall -I../getopt  -I../../include -I/usr/openwin/include  -c -o
unixserial.o unixserial.c
unixserial.c: In function `serial_write':
unixserial.c:455: warning: increment of read-only location
unixserial.c: In function `serial_nreceived':
unixserial.c:466: `FIONREAD' undeclared (first use in this function)
unixserial.c:466: (Each undeclared identifier is reported only once
unixserial.c:466: for each function it appears in.)
gmake[1]: *** [unixserial.o] Error 1
gmake[1]: Leaving directory `/usr/local/gnokii-0.4.3/common/devices'
make: *** [common/devices] Error 2
bash-2.03#

Why these error?????