Problems building jtreg

[Roman Kennke]

Hi all,
I am trying to build latest jdk. It requires jtreg 4.2 b12.
AdoptOpenJDK doesn't provide that.

Therefore I am trying to build jtreg myself. I first tried 'make -C
make' which did not work at all. I then tried:

bash make/build-all.sh /path/to/jdk8

Which made some progress, but then failed because it could not find
'shasum'. I am trying this on latest CentOS7. It does have:

sha1sum    sha224sum  sha256sum  sha384sum  sha512sum

I replaced shasum with sha1sum all over the build scripts, but
apparently it does not accept the '-a' flag.

Any ideas?

Cheers, Roman