
option was used.

The current working directory of Perl defaults to the "home"
directory in Emscripten's virtual file system, currently
"/home/web_user", and all filenames are relative to this directory.
You may also specify absolute filenames such as "/tmp/foo.txt".
However, note that intermediate directories are currently not
automatically created, so if you specify files with nonexistent
directories like "/tmp/foo/bar.txt" or the relative "foo/bar.txt",
this will not work.

Additional options: Setting "