FreeBSD9.1 を使用しています。
がある:
root@BSD:/root # cpan
Can't load '/usr/local/lib/perl5/site_perl/5.14.2/mach/auto/Socket/Socket.so' for module Socket: /usr/local/lib/perl5/site_perl/5.14.2/mach/auto/Socket/Socket.so: Undefined symbol "PL_unitcheckav" at /usr/local/lib/perl5/5.14.2/XSLoader.pm line 71.
at /usr/local/lib/perl5/site_perl/5.14.2/mach/Socket.pm line 852
Compilation failed in require at /usr/local/lib/perl5/5.14.2/Net/Ping.pm line 12.
BEGIN failed--compilation aborted at /usr/local/lib/perl5/5.14.2/Net/Ping.pm line 12.
Compilation failed in require at /usr/local/lib/perl5/5.14.2/CPAN/Mirrors.pm line 11.
BEGIN failed--compilation aborted at /usr/local/lib/perl5/5.14.2/CPAN/Mirrors.pm line 11.
Compilation failed in require at /usr/local/lib/perl5/5.14.2/CPAN/FirstTime.pm line 11.
BEGIN failed--compilation aborted at /usr/local/lib/perl5/5.14.2/CPAN/FirstTime.pm line 11.
Compilation failed in require at /usr/local/lib/perl5/5.14.2/CPAN/HandleConfig.pm line 573.
なぜ?それを修正する方法は?