Compile problems!!!

[Technical Support]

*sigh* Ok I've been fighting with this a couple days.
I have installed Solaris 2.5.1 for the x86
It continues to give me this error however when I try to compile samba
using gcc.(the only compiler I have)
I have successfully compiled it before on a Sun Ultra....but the x86
eludes me....
if someone could PLEASE tell me what I'm doing incorrectly I would
appreciate it.
Thanks
tech at uafs.com
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samba# make
Using CFLAGS = -O -DSMBLOGFILE="/usr/local/samba/var/log.smb" -DNMBLOGFILE="/usr/local/samba/var/log.nmb" -DCONFIGFILE="/usr/local/samba/lib/smb.conf" -DLMHOSTSFILE="/usr/local/samba/lib/lmhosts" -DLOCKDIR="/usr/local/samba/var/locks" -DSMBRUN="/usr/local/samba/bin/smbrun" -DWORKGROUP="WORKGROUP" -DGUEST_ACCOUNT="nobody" -DSUNOS5 -DSHADOW_PWD -DNETGROUP      
Using LIBS =  -lsocket -lnsl   
Compiling server.c
Compiling predict.c
Compiling util.c
util.c: In function `Debug1':
util.c:190: `__builtin_va_alist' undeclared (first use this function)
util.c:190: (Each undeclared identifier is reported only once
util.c:190: for each function it appears in.)
util.c: In function `Get_Hostbyname':
util.c:3226: warning: initialization makes pointer from integer without a cast
util.c: In function `BlockSignals':
util.c:3340: `sigset_t' undeclared (first use this function)
util.c:3340: parse error before `set'
util.c:3341: `set' undeclared (first use this function)
*** Error code 1
make: Fatal error: Command failed for target `util.o'