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Re: No more free JRE - Java is dead?

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On 6/28/2018 3:40 PM, Martin Gregorie wrote:
> On Wed, 27 Jun 2018 20:14:50 -0400, Arne Vajhøj wrote:
> 
>> On 6/27/2018 4:38 PM, Martin Gregorie wrote:
>>> On Wed, 27 Jun 2018 12:24:29 -0700, Eric Douglas wrote:
>>>> Is C++ platform independent?
>>>>
>>> It is to the extent that the GNU C compiler is portable because GNU C++
>>> is essentially just a preprocessor: it generates C, which is then fed
>>> to the GNU G compiler to produce an executable.
>>
>> That was how the original C++ compiler cfront worked.
>>
>> I don't think GNU C++ (g++) works that way.
>>
> It seems to have changed again recently: currently it looks as though
> there is one frontend for each language. All frontends produce the same
> output (an intermediate language called GIMPLE) which is passed to the
> optimiser and backend. The latter generates target-specific assembler,

That is all within same executable.

> However, its also possible I've misunderstood the setup because I found
> the GNU documentation quite opaque and have basically ended up
> summarising the Wikipedia "GNU Compiler Collection" page, so all
> corrections greatfully received.

Just use gcc -v and g++ -v and they reveal what they run.

> The bottom line: to compile another language such as Java or COBOL yo
> have to write a new front end, but are expected to reuse the optimiser
> and backend as well as the target-specific assembler and linker.

That is how compilers are done today and has been for many years.

The distinct backend for each compiler is too expensive.

Arne

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No more free JRE - Java is dead? slawek <x.y@org.org> - 2018-06-27 09:29 +0200
  Re: No more free JRE - Java is dead? Martin Gregorie <martin@mydomain.invalid> - 2018-06-27 12:00 +0000
  Re: No more free JRE - Java is dead? Eric Douglas <e.d.programmer@gmail.com> - 2018-06-27 08:24 -0700
  Re: No more free JRE - Java is dead? Marcel Mueller <news.5.maazl@spamgourmet.org> - 2018-06-27 20:07 +0200
    Re: No more free JRE - Java is dead? Eric Douglas <e.d.programmer@gmail.com> - 2018-06-27 12:24 -0700
      Re: No more free JRE - Java is dead? Marcel Mueller <news.5.maazl@spamgourmet.org> - 2018-06-27 21:50 +0200
        Re: No more free JRE - Java is dead? Eric Douglas <e.d.programmer@gmail.com> - 2018-06-27 13:35 -0700
      Re: No more free JRE - Java is dead? Martin Gregorie <martin@mydomain.invalid> - 2018-06-27 20:38 +0000
        Re: No more free JRE - Java is dead? Arne Vajhøj <arne@vajhoej.dk> - 2018-06-27 20:14 -0400
          Re: No more free JRE - Java is dead? Martin Gregorie <martin@mydomain.invalid> - 2018-06-28 19:40 +0000
            Re: No more free JRE - Java is dead? Arne Vajhøj <arne@vajhoej.dk> - 2018-06-28 18:32 -0400
              Re: No more free JRE - Java is dead? Martin Gregorie <martin@mydomain.invalid> - 2018-06-28 23:15 +0000
  Re: No more free JRE - Java is dead? Arne Vajhøj <arne@vajhoej.dk> - 2018-06-27 20:09 -0400
    Re: No more free JRE - Java is dead? Arne Vajhøj <arne@vajhoej.dk> - 2018-06-27 21:07 -0400
  Re: No more free JRE - Java is dead? Haddock <ffm2002@web.de> - 2018-07-11 23:31 -0700
    Re: No more free JRE - Java is dead? Arne Vajhøj <arne@vajhoej.dk> - 2018-07-14 14:01 -0400
      Re: No more free JRE - Java is dead? Eric Douglas <e.d.programmer@gmail.com> - 2018-07-20 05:51 -0700
        Re: No more free JRE - Java is dead? Arne Vajhøj <arne@vajhoej.dk> - 2018-07-20 21:43 -0400
    Re: No more free JRE - Java is dead? Jukka Lahtinen <jtfjdehf@hotmail.com.invalid> - 2018-07-15 14:04 +0300

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