DBI-1.15 `__builtin_va_alist' undeclared plus perl -V

[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.

Sorry to be repetitive  but here is also my perl  -V output

#perl -V  
Summary of my perl5 (revision 5.0 version 6 subversion 0) configuration:
  Platform:
    osname=solaris, osvers=2.6, archname=sun4-solaris
    uname='sunos orion 5.6 generic_105181-05 sun4m sparc sunw,sparcstation-4
'
    config_args='-Dcc=gcc -Dprefix=/usr/local -Uinstallusrbinperl -de'
    hint=recommended, useposix=true, d_sigaction=define
    usethreads=undef use5005threads=undef useithreads=undef
usemultiplicity=undef
    useperlio=undef d_sfio=undef uselargefiles=define 
    use64bitint=undef use64bitall=undef uselongdouble=undef usesocks=undef
  Compiler:
    cc='gcc', optimize='-O', gccversion=2.95.2 19991024 (release)
    cppflags='-fno-strict-aliasing -I/usr/local/include'
    ccflags ='-fno-strict-aliasing -I/usr/local/include -D_LARGEFILE_SOURCE
-D_FILE_OFFSET_BITS=64'
    stdchar='unsigned char', d_stdstdio=define, usevfork=false
    intsize=4, longsize=4, ptrsize=4, doublesize=8
    d_longlong=define, longlongsize=8, d_longdbl=define, longdblsize=16
    ivtype='long', ivsize=4, nvtype='double', nvsize=8, Off_t='off_t',
lseeksize=8
    alignbytes=8, usemymalloc=y, prototype=define
  Linker and Libraries:
    ld='gcc', ldflags =' -L/usr/local/lib '
    libpth=/usr/local/lib /lib /usr/lib /usr/ccs/lib
    libs=-lsocket -lnsl -lgdbm -ldb -ldl -lm -lc -lcrypt -lsec
    libc=/lib/libc.so, so=so, useshrplib=false, libperl=libperl.a
  Dynamic Linking:
    dlsrc=dl_dlopen.xs, dlext=so, d_dlsymun=undef, ccdlflags=' '
    cccdlflags='-fPIC', lddlflags='-G -L/usr/local/lib'


Characteristics of this binary (from libperl): 
  Compile-time options: USE_LARGE_FILES
  Built under solaris
  Compiled at Apr 14 2000 01:46:43
  @INC:
    /usr/local/lib/perl5/5.6.0/sun4-solaris
    /usr/local/lib/perl5/5.6.0
    /usr/local/lib/perl5/site_perl/5.6.0/sun4-solaris
    /usr/local/lib/perl5/site_perl/5.6.0
    /usr/local/lib/perl5/site_perl