Checking if your kit is complete...
Looks good
Writing Makefile for IO::Socket::Multicast
cp Multicast.pm blib/lib/IO/Socket/Multicast.pm
/export/home/cpanrun/build/5.8.0/bin/perl /export/home/cpanrun/build/5.8.0/lib/5.8.0/ExtUtils/xsubpp  -typemap /export/home/cpanrun/build/5.8.0/lib/5.8.0/ExtUtils/typemap  Multicast.xs > Multicast.xsc && mv Multicast.xsc Multicast.c
gcc -c   -D_POSIX_PTHREAD_SEMANTICS -D_REENTRANT -fno-strict-aliasing -D_LARGEFILE_SOURCE -D_FILE_OFFSET_BITS=64 -O   -DVERSION=\"1.05\" -DXS_VERSION=\"1.05\" -fPIC "-I/export/home/cpanrun/build/5.8.0/lib/5.8.0/sun4-solaris-thread-multi/CORE"   Multicast.c
Running Mkbootstrap for IO::Socket::Multicast ()
chmod 644 Multicast.bs
rm -f blib/arch/auto/IO/Socket/Multicast/Multicast.so
LD_RUN_PATH="/usr/lib" gcc  -G Multicast.o  -o blib/arch/auto/IO/Socket/Multicast/Multicast.so   -lresolv  
chmod 755 blib/arch/auto/IO/Socket/Multicast/Multicast.so
cp Multicast.bs blib/arch/auto/IO/Socket/Multicast/Multicast.bs
chmod 644 blib/arch/auto/IO/Socket/Multicast/Multicast.bs
Manifying blib/man3/IO::Socket::Multicast.3
PERL_DL_NONLAZY=1 /export/home/cpanrun/build/5.8.0/bin/perl "-Iblib/lib" "-Iblib/arch" test.pl
1..14
ok 1
ok 2
ok 3
ok 4
ok 5
ok 6
ok 7
ok 8
ok 9
ok 10
ok 11
ok 12
ok 13
ok 14
Installing /export/home/cpanrun/build/5.8.0/lib/site_perl/5.8.0/sun4-solaris-thread-multi/auto/IO/Socket/Multicast/Multicast.so
Installing /export/home/cpanrun/build/5.8.0/lib/site_perl/5.8.0/sun4-solaris-thread-multi/auto/IO/Socket/Multicast/Multicast.bs
Installing /export/home/cpanrun/build/5.8.0/lib/site_perl/5.8.0/sun4-solaris-thread-multi/IO/Socket/Multicast.pm
Installing /export/home/cpanrun/build/5.8.0/man/man3/IO::Socket::Multicast.3
Appending installation info to /export/home/cpanrun/build/5.8.0/lib/5.8.0/sun4-solaris-thread-multi/perllocal.pod