Errors and warnings (in UNIX, I don't know how this works in Windows) are printed to STDERR (standard error). STDERR is attached to the console by default, so if you want to print errors/warnings somewhere else, you just have to redirect STDERR (filehandle 2): 
$ perl -Mstrict -e '$test = "foo"'

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will print 
Global symbol "$test" requires explicit package name at -e line 1.
Execution of -e aborted due to compilation errors.

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to the console, but 
$ perl -Mstrict -e '$test = "foo"' 2> error.log

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will print the error to file ./error.log. Check your shell's manpage for details on redirecting STDERR.

hope this helps,

Update: as for using syslog to log the errors, I don't know if you can do this, since as far as I can remember, you use a specific system call to do that: syslog(3).

Update #2: a quick question in #debian @ freenode.net and I have something else: check the logger command, which is a "shell command interface to the syslog(3) system log module" (from the manpage).

In reply to Re: Catching perl warnings and errors by CukiMnstr
in thread Catching perl warnings and errors by hotshot

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