The tl;dr from reading between the lines is that having the open source version was crippling their commercial sales, so they tried to make it go away.
There's a nightly download from http://www.pathscale.com/ekopath-compiler-suite makes you click through a GPLv2 license (the GPL is not an EULA, dammit!) but there's no source included or any link to source.
But I did eventually track down a clone of the original github version here:
I see. So basically they wanted to open it, but changed their mind. How does current PathScale handle the GPL though? Or they never updated the compiler since then?
While we were shipping the compiler at the original PathScale, the source was distributed to everyone we distributed a copy to (GPLv2 clause 3a). I'm not sure why you'd mention github, given that they didn't exist yet. And I have no idea what you mean by "official site" when we're talking about a company that ceased business in 2006.
p.s. if you wonder why I'm so vehement about this topic, it's because you're basically accusing real people of being unethical based on your inability to find things now that we were required to give away in the past.
While GPlv2 3a is open source, it usually refers to including the source with the product in the form of something like a CD-ROM.[1]
>3. You may copy and distribute the Program (or a work based on it, under Section 2) in object code or executable form under the terms of Sections 1 and 2 above provided that you also do one of the following:
>a) Accompany it with the complete corresponding machine-readable source code, which must be distributed under the terms of Sections 1 and 2 above on a medium customarily used for software interchange
Do you know if the source is downloadable, legally from anywhere? Or was it only distributed to original customers?
I have no idea if the source is downloadable, legally, from anywhere. That's not required by the license. I'm glad that you actually looked at the license before you asked!
Sorry to disappoint you, but CD-ROMs aren't customary used for software interchange anymore. Unless you are collecting antiques. So again, where can I find the code for the current day PathScale?