DBI-1.15 `__builtin_va_alist' undeclared

[Colleen Smith]

I am having trouble compiling DBI-1.15 on a solaris 2.6 sparc box.
I get the following error:

DBI.xs: In function `dbih_logmsg':
DBI.(first use in this function)xs:419: `__builtin_va_alist' undeclared

I am using the following (which I have recompiled all) :

       perl5.6.0
       DBI-1.15 
       gcc-2.95.2
       GNUmake-3.78.1

#make test TEST_VERBOSE=1 
gcc -c  -fno-strict-aliasing -I/usr/local/include -D_LARGEFILE_SOURCE
-D_FILE_OFFSET_BITS=64 -O     -DVERSION=\"1.15\" -DXS_VERSION=\"1.15\" -fPIC
-I/usr/local/lib/perl5/5.6.0/sun4-solaris/CORE -DDBI_NO_THREADS DBI.c
DBI.xs: In function `dbih_logmsg':
DBI.(first use in this function)xs:419: `__builtin_va_alist' undeclared 
DBI.xs:419: (Each undeclared identifier is reported only once
DBI.xs:419: for each function it appears in.)
make: *** [DBI.o] Error 1

ANY HELP WOULD BE APPRECIATED.