Getting the current configuration into a form useful for a new configuration is easy enough:

    /path/to/current/perl -V':.*' | sed -e 's/^/-D/'
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This will pick up all of the current configuration options, though, including several you won't want. Library path, API-level settings, etc. that are specific to 5.6.0. So I'd use an exclusionary grep:

    perl -V':.*' | egrep -v '(^PERL_|^api_|5\.6\.0)' | sed -e 's/^/-D/
+'
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What I don't know is whether you can backtick-feed that Configure on a command line like so:

    Configure `perl -V':.*' | egrep -v '(^PERL_|^api_|5\.6\.0)' | sed 
+-e 's/^/-D/'`
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I went through the README, INSTALL and such in the latest source distribution, but I couldn't find a way to feed Configure from a file other than config.sh or Policy.sh. And as I pointed out earlier, you don't want to use all of the elements that would be in config.sh.

--rjray

As long as we're talking perl, why not use a perl one-liner instead of sed and grep...

perl -V':.*' | perl -ne '/^PERL_|^api_|5\.6\.0/ or s/^/-D/, print'
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-Blake

I have used the following script:

% perl -MConfig -lwe 'exec map $Config{"config_arg$_"},
    0..$Config{config_argc}'
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if you want to add new arguments, try

% perl -MConfig -lwe 'exec +(map $Config{"config_arg$_"}, 
    0..$Config{config_argc}), @ARGV' -- -Dusedevel
[download]

Robin