I’m not sure I understand the problem you are having. I just tried to build from a fresh clone (on linux) and everything built with no issues and the “make check” passed.
No matter what kind of gsc-boot I tried, it didn't work.
But finally managed to solve the problem: I had used a shallow clone (`git clone --depth 1`) which caused a mysterious build failure. An ordinary `git clone` with the full history works fine, even with no 4.9.3 gsc on the system.
Anyway, there is now finally a ready-to-run Docker container of Gambit's latest commit!
docker run -it schemers/gambit:head
Should probably add Git to that container so that remote modules work (`gsi github.com/gambit/hello`).