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inc/Module/Install.pm  view on Meta::CPAN

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        # all of the following checks should be included in import(),
        # to allow "eval 'require Module::Install; 1' to test
        # installation of Module::Install. (RT #51267)
        #-------------------------------------------------------------
 
        # Whether or not inc::Module::Install is actually loaded, the
        # $INC{inc/Module/Install.pm} is what will still get set as long as
        # the caller loaded module this in the documented manner.
        # If not set, the caller may NOT have loaded the bundled version, and thus
        # they may not have a MI version that works with the Makefile.PL. This would
        # result in false errors or unexpected behaviour. And we don't want that.
        my $file = join( '/', 'inc', split /::/, __PACKAGE__ ) . '.pm';
        unless ( $INC{$file} ) { die <<"END_DIE" }
 
Please invoke ${\__PACKAGE__} with:
 
        use inc::${\__PACKAGE__};
 
not:
 
        use ${\__PACKAGE__};

inc/Module/Install.pm  view on Meta::CPAN

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        # is unreliable on some platforms and requires write permissions)
        # for now we should catch this and refuse to run.
        if ( -f $0 ) {
                my $s = (stat($0))[9];
 
                # If the modification time is only slightly in the future,
                # sleep briefly to remove the problem.
                my $a = $s - time;
                if ( $a > 0 and $a < 5 ) { sleep 5 }
 
                # Too far in the future, throw an error.
                my $t = time;
                if ( $s > $t ) { die <<"END_DIE" }
 
Your installer $0 has a modification time in the future ($s > $t).
 
This is known to create infinite loops in make.
 
Please correct this, then run $0 again.
 
END_DIE

inc/Module/Install.pm  view on Meta::CPAN

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                        goto &$code unless $cwd eq $pwd;
                }
                unless ($$sym =~ s/([^:]+)$//) {
                        # XXX: it looks like we can't retrieve the missing function
                        # via $$sym (usually $main::AUTOLOAD) in this case.
                        # I'm still wondering if we should slurp Makefile.PL to
                        # get some context or not ...
                        my ($package, $file, $line) = caller;
                        die <<"EOT";
Unknown function is found at $file line $line.
Execution of $file aborted due to runtime errors.
 
If you're a contributor to a project, you may need to install
some Module::Install extensions from CPAN (or other repository).
If you're a user of a module, please contact the author.
EOT
                }
                my $method = $1;
                if ( uc($method) eq $method ) {
                        # Do nothing
                        return;



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