Building OpenJDK libraries using IcedTea Project for JamVM

Andrew Hughes gnu.andrew at
Wed Dec 17 13:34:22 UTC 2014

----- Original Message -----
> > FWIW, you should be able to create a snapshot zip from
> >, which contains an implementation
> > of the missing function, and use IcedTea's --with-jamvm-src-zip
> > switch.
> This does not work. I managed to build it in a slightly hacky way now:
> The snapshot file from sourceforge cannot be used directly. Despite it
> being called src-zip, icedtea expects it to be a .tar.gz file. The
> directory inside the tarball must have a name like "jamvm-*". I
> created mine using this:
> git archive --prefix=jamvm-2.0.0/ HEAD |gzip > ~/temp/jamvm.tgz
> Unfortunately, when using this option, the sha256sum will still be
> checked, so I just removed the entire if-block from the Makefile (look
> for JAMVM_SHA256SUM).
> $ ./ -version
> java version "1.7.0_71"
> IcedTea Runtime Environment (2.5.4pre01+rf7b45c531997) (CentOS build
> 1.7.0_71-b14)
> JamVM (build 2.0.1-devel, inline-threaded interpreter)

This is by design. The IcedTea build is set to work with the versions
of JamVM and CACAO it has been tested with.
Andrew :)

Free Java Software Engineer
Red Hat, Inc. (

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