Use which C compiler? [cc]  
ld:
-no_ansi_alias: Unknown flag
ld: Usage: ld [options] file [...]
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because it doesn't grok the -no_ansi_alias flag.

To get you going you could try the following: the perl distribution contains a directory named 'hints' which contains hint files for various systems; in there is a file named 'dec_osf.sh' which is sourced by 'Configure' for the 'dec_osf' type system. Look for the above flag there and comment it out.

That might help. I've never seen a Tru64 system, so I can't tell you whether 'ld' should know about that flag. Browse that hint file, something might ring a bell.

But in the output you've posted more errors are showing up:

Which of these apply, if any? [dec_osf]  
/usr/lib/cmplrs/cc/ftoc: No such file or directory
/usr/lib/cmplrs/cc/cord: No such file or directory
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Is your Tru64 system sane?

update: you might want to check whether the right ld is first in your path.

_($_=" "x(1<<5)."?\n".q·/)Oo.  G°\        /
                              /\_¯/(q    /
----------------------------  \__(m.====·.(_("always off the crowd"))."·
");sub _{s./.($e="'Itrs `mnsgdq Gdbj O`qkdq")=~y/"-y/#-z/;$e.e && print}