$ for q in                  \
>    XML::Compile           \
>    XML::Compile::WSDL11   \
>    Math::BigInt           \
>    Math::BigInt::FastCalc
> do
>    perl -M$q -le'print "$ARGV[0] ", $ARGV[0]->VERSION' $q
> done
XML::Compile 1.21
XML::Compile::WSDL11 2.21
Math::BigInt 1.99
Math::BigInt::FastCalc 0.24

$ perl -v | grep version
This is perl 5, version 12, subversion 2 (v5.12.2) built for i686-linux

$ perl -le'
>    use XML::Compile::WSDL11;
>    use XML::Compile::SOAP11;
>    use Math::BigInt;
>    print "ok";
> '
ok