Fwd: gcj can not import packages

Wed Jan 18 20:59:00 GMT 2017

Matthias Klose <doko@ubuntu.com> writes:
> yes, you need some trusted binaries. For example, there are various Linux
> distributions which provide these binaries. And even if you want to build for a
> target that doesn't have binaries, you can first build a native openjdk on your
> build platform, and then cross-build for your target. I built several Linux
> architectures this way ...

The Bootstrappable Builds project[1] ties to remove the number of
trusted binaries to bootstrap a modern system. One way to get there is
to have a bootstrap path that leads to the unavoidable C compiler.
And even the C compiler doesnâ€™t *have* to be a trusted binary. The Mes
project[2] tries to build a C compiler using a minimal, hand-verifyable
Scheme implementation, for example.
I just find it sad to see GCJ go, because it makes it quite a bit harder
to build the OpenJDK without a trusted JDK. Relying on the last release
of GCC that included the GCJ sources isnâ€™t a viable long-term solution,
because, as experience has shown, build systems of the past become
unsupported and harder to satisfy as time passes. It is, for example,
quite a challenge to build the GNU Pascal compiler (needed to bootstrap
the self-hosted Freepascal compiler from source) from a decade back with
a modern toolchain.
[1]: http://bootstrappable.org
[2]: https://gitlab.com/janneke/mes
--
Ricardo
GPG: BCA6 89B6 3655 3801 C3C6 2150 197A 5888 235F ACAC
https://elephly.net