I've often heard that Eidos did the FFVII PC (1998) port, especially since the news of the re-release, but is there any proof for that? I know vaguely that Eidos hosted the 1.02 patch and generally handled technical support for FF7PC. I don't know, but don't a lot of publishers do that for the games they release?
What information I've gathered so far suggests SquareSoft was responsible.
Press releasehttp://www.ff7citadel.com/press/pr_pc.shtml(Emphasis below mine)
One of the summer's premiere blockbuster titles, Final Fantasy VII for the PC is published by Eidos Interactive, known for its mega-hit cross-platform Tomb Raider games, and developed by Square Co., Ltd., known in the gaming industry for creating the legendary Final Fantasy franchise. SquareSoft, Inc., a subsidiary of Square Co., Ltd. has recreated the game for the PC.
FF7PC Game CreditsI can't find any software programmers listed under either 'Eidos' section in the credits.
"Square Soft Inc.", however, has 'Senior Software Engineers' and 'Software Engineers' listed.
Senior Software Engineers
Anthony Ignacio
Son Ton
Software Engineers
"William" Feng chen
Scott Conventon
Jay Fong
Kazumasa Fusya
Akintunde Omitowoju
Rajiv Patel
Yoshinori "Goro" Uenishi
FF8 PC Interviewhttp://pc.ign.com/articles/070/070923p1.htmlThis is an interview about FF8PC, but the software engineer interviewed, Jay Fong, is also listed as a software engineer in FF7PC's credits.
However because of the experience we gained while working on the Final Fantasy VII port, work on the PC version of Final Fantasy VIII has gone very smoothly.
YM: Squaresoft game programmers did all the necessary work. They learned a lot from FF7 project though they have to do even more to port FF8 to the PC because FF8 added more new features on FF7.
These quotes mention the team learning from the work done for FF7, which to me implies firsthand experience rather than secondhand experience.
FF8PC CreditsSenior Software Engineers
Jay Fong
Anthony Ignacio
Software Engineers
Kevin Christensen
Scott Coventon
Kazumasa Fuseya
Davide Pasca
Yoshinori "Goro" Uenishi
Now, compare it to the list of software engineers for FF7PC. Out of the 7 software engineers who worked on FF8PC, 6 of them were also listed as software engineers for FF7PC.