Compilation ancestry of javac?

[Eric Lefevre-Ardant]

Thanks everyone for your input.

To be clear, I'm just trying to establish what would be needed to recompile
the official javac from scratch (for some definitions of "scratch").
Information on other compilers is also interesting, but that's another
topic.

>From what I gather, the situation is the following:

javac 1.8
 ^
 | "was compiled from"
javac 1.7
 ^
 |
javac 1.6
 ^
 |
javac 1.5
 ^
 |
javac 1.4 (gcj)
 ^
 |
javac 1.3
 ^
 |
javac 1.2
 ^
 |
javac 1.1
 ^
 |
javac 1.0
 ^
 |
javac pre-1.0, written in C
 ^
 |
SunOS cc

I realize that, in theory, you could rebuild some particular versions of
javac with a non-javac compiler such as Jikes, but then it wouldn't be the
official version that we all use.

Is that timeline overly simplified? I would be grateful for any additional
details.

Thank you again



On 19 March 2013 11:05, Dalibor Topic <dalibor.topic at oracle.com> wrote:

> On 3/19/13 12:37 AM, Remi Forax wrote:
> > In 1999, as part of the Kaffe Virtual Machine, a new Java compiler
> > written in Java kjc was developed
> > (You can ask Dalibor Topic for more info).
>
> See http://compilers.iecc.com/comparch/article/99-11-020
>
> cheers,
> dalibor topic
> --
> Oracle <http://www.oracle.com>
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