Do you actually have a functioning C compiler installed on that machine - one that you have verified as being capable of compiling C programs ?

I gather that perl -V reports '/opt/SUNWspro/bin/cc' (or, at least, would have reported that before you amended Config.pm).
It's best to use the compiler that built perl (and 'perl -V' identifies that compiler), but if you have another functioning C compiler you could give it a try.
Just cd to any IO-Pty build directory you find in /usr/local/home/myuser/.cpan/build and run: 
make realclean
perl Makefile.PL CC=/usr/bin/cc  (or wherever)
make test
make install

[download]
A better solution would be to follow salva's advice if possible.

Cheere,
Rob

In reply to Re^3: IO::Pty wont install, so I cant use Net::OpenSSH by syphilis
in thread IO::Pty wont install, so I cant use Net::OpenSSH by jtzako

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