panic% perl Makefile.PL PERL_TRACE=1 [...]
Next, set the environment variable MOD_PERL_TRACE to s (as explained in Chapter 21). Now you should be able to see how the <Perl>section globals are converted into directive string values. For example, suppose you have the following Perl section:
<Perl> $DocumentRoot = "/home/httpd/docs/mine"; </Perl>
If you start the server in single-server mode (e.g., under bash):
panic% MOD_PERL_TRACE=s httpd -X
you will see these lines among the printed trace:
... SVt_PV: $DocumentRoot = `/home/httpd/docs/mine' handle_command (DocumentRoot /home/httpd/docs/mine): OK ...
But what if you mistype the directory name and pass two values instead of a single value? When you start the server, you'll see the following error:
... SVt_PV: $DocumentRoot = `/home/httpd/docs/ mine' handle_command (DocumentRoot /home/httpd/docs/ mine): DocumentRoot takes one argument, Root directory of the document tree ...
[Wed Dec 20 23:47:31 2000] [error] (2)No such file or directory: <Perl>: DocumentRoot takes one argument, Root directory of the document tree
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