bash-2.03$ perl Makefile.PL CC=`which gcc`
*** Note:
    The optional PlRPC-modules (RPC::PlServer etc) are not installed.
    If you want to use the DBD::Proxy driver and DBI::ProxyServer
    ... yada yada yada

bash-2.03$ make
mkdir blib
mkdir blib/lib
...
cp DBI.pm blib/lib/DBI.pm
/usr/bin/perl -p -e "s/~DRIVER~/Perl/g" < blib/arch/auto/DBI/Driver.xst > Perl.xsi
/usr/bin/perl -I/usr/perl5/5.00503/sun4-solaris -I/usr/perl5/5.00503 /usr/perl5/5.00503/ExtUtils/xsubpp  -typemap /usr/perl5/5.00503/ExtUtils/typemap Perl.xs >xstmp.c && mv xstmp.c Perl.c
/usr/local/bin/gcc -c   -xO3 -xdepend     -DVERSION=\"1.201\"  -DXS_VERSION=\"1.201\" -KPIC -I/usr/perl5/5.00503/sun4-solaris/CORE -DDBI_NO_THREADS Perl.c
gcc: unrecognized option `-KPIC'
gcc: language depend not recognized
gcc: Perl.c: linker input file unused because linking not done
/usr/bin/perl -I/usr/perl5/5.00503/sun4-solaris -I/usr/perl5/5.00503 /usr/perl5/5.00503/ExtUtils/xsubpp  -typemap /usr/perl5/5.00503/ExtUtils/typemap DBI.xs >xstmp.c && mv xstmp.c DBI.c
/usr/local/bin/gcc -c   -xO3 -xdepend     -DVERSION=\"1.201\"  -DXS_VERSION=\"1.201\" -KPIC -I/usr/perl5/5.00503/sun4-solaris/CORE -DDBI_NO_THREADS DBI.c
gcc: unrecognized option `-KPIC'
gcc: language depend not recognized
gcc: DBI.c: linker input file unused because linking not done
Running Mkbootstrap for DBI ()
chmod 644 DBI.bs
LD_RUN_PATH="" cc -o blib/arch/auto/DBI/DBI.so  -G DBI.o     
ucbcc: Warning: Option -YP,:/usr/ucblib:/opt/SUNWspro/WS6U2/bin/../lib:/opt/SUNWspro/WS6U2/bin:/usr/ccs/lib:/usr/lib passed to ld, if ld is invoked, ignored otherwise
ld: warning: option -YP appears more than once, first setting taken
ld: fatal: file DBI.o: cannot open file: No such file or directory
ld: fatal: File processing errors. No output written to blib/arch/auto/DBI/DBI.so
*** Error code 1
make: Fatal error: Command failed for target `blib/arch/auto/DBI/DBI.so'
bash-2.03$