Hi Javier,
I have successfully installed the Solaris binary on the computers at the math institute of our university -- exactly on the 20th anniversary of the computer station. :-)
When the next beta version of GPC comes out, can you please provide me a binary of this, too? Then I could run the test suite on the sparcs and make sure there are no new bugs, before we can finally release GPC 2.1.
Regards, Frank