`__builtin_va_alist' undeclared

Hi
Please help me...
I am installing postgresql-7.3.4 on solaris sparc 2.8.
But with make it is giving me the following error. I am strucked now.

Output:
make -C nbtree SUBSYS.o
make[4]: Entering directory
`/opt/temp/postgresql-7.3.4/src/backend/access/nbtree'
make[4]: `SUBSYS.o' is up to date.
make[4]: Leaving directory
`/opt/temp/postgresql-7.3.4/src/backend/access/nbtree'
make -C rtree SUBSYS.o
make[4]: Entering directory
`/opt/temp/postgresql-7.3.4/src/backend/access/rtree'
make[4]: `SUBSYS.o' is up to date.
make[4]: Leaving directory
`/opt/temp/postgresql-7.3.4/src/backend/access/rtree'
make -C transam SUBSYS.o
make[4]: Entering directory
`/opt/temp/postgresql-7.3.4/src/backend/access/transam'
make[4]: `SUBSYS.o' is up to date.
make[4]: Leaving directory
`/opt/temp/postgresql-7.3.4/src/backend/access/transam'
make[3]: Leaving directory `/opt/temp/postgresql-7.3.4/src/backend/access'
make -C bootstrap all
make[3]: Entering directory
`/opt/temp/postgresql-7.3.4/src/backend/bootstrap'
make[3]: Nothing to be done for `all'.
make[3]: Leaving directory
`/opt/temp/postgresql-7.3.4/src/backend/bootstrap'
make -C catalog all
make[3]: Entering directory `/opt/temp/postgresql-7.3.4/src/backend/catalog'
make[3]: Nothing to be done for `all'.
make[3]: Leaving directory `/opt/temp/postgresql-7.3.4/src/backend/catalog'
make -C parser all
make[3]: Entering directory `/opt/temp/postgresql-7.3.4/src/backend/parser'
make[3]: Nothing to be done for `all'.
make[3]: Leaving directory `/opt/temp/postgresql-7.3.4/src/backend/parser'
make -C commands all
make[3]: Entering directory
`/opt/temp/postgresql-7.3.4/src/backend/commands'
make[3]: Nothing to be done for `all'.
make[3]: Leaving directory `/opt/temp/postgresql-7.3.4/src/backend/commands'
make -C executor all
make[3]: Entering directory
`/opt/temp/postgresql-7.3.4/src/backend/executor'
make[3]: Nothing to be done for `all'.
make[3]: Leaving directory `/opt/temp/postgresql-7.3.4/src/backend/executor'
make -C lib all
make[3]: Entering directory `/opt/temp/postgresql-7.3.4/src/backend/lib'
gcc -Wall -Wmissing-prototypes -Wmissing-declarations -I../../../src/includ
e -I/usr/local/include -I/usr/include -c -o
stringinfo.o stringinfo.c
stringinfo.c: In function `appendStringInfo':
stringinfo.c:126: `__builtin_va_alist' undeclared (first use in this
function)
stringinfo.c:126: (Each undeclared identifier is reported only once
stringinfo.c:126: for each function it appears in.)
make[3]: *** [stringinfo.o] Error 1
make[3]: Leaving directory `/opt/temp/postgresql-7.3.4/src/backend/lib'
make[2]: *** [lib-recursive] Error 2
make[2]: Leaving directory `/opt/temp/postgresql-7.3.4/src/backend'
make[1]: *** [all] Error 2
make[1]: Leaving directory `/opt/temp/postgresql-7.3.4/src'
make: *** [all] Error 2

Thanks in advance,

Kalyan.