RE: GCJ on Linux

RE: GCJ on Linux

[Andrew Zahra]

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Title: RE: GCJ on Linux





Yes - it's a runtime failure. Sorry for not making that clear.


We'll grab the latest snapshot of GCJ and try it again on our system.


-----Original Message-----
From:   Boehm, Hans [SMTP:hboehm@exch.hpl.hp.com]
Sent:   Wednesday, January 26, 2000 4:54 AM
To:     Zahra, Andrew [WOLL:4009-M:EXCH]; java-discuss@sourceware.cygnus.com
Cc:     Nicholson, Peter [WOLL:4009:EXCH]; Urbanski, Justin [WOLL:4009:EXCH]
Subject:        RE: GCJ on Linux


Assuming this is a runtime failure, it's likely to be caused by the fact that Mandrake 6.1 aparently uses a kernel configured for > 1GB physical memory.  This causes the main process stack to start at an address different from what the garbage collector expects.  This is fixed in more recent versions of the garbage collector.

 
Hans


-----Original Message-----
From: Andrew Zahra [ mailto:andzahra@nortelnetworks.com ]
Sent: Monday, January 24, 2000 5:48 PM
To: java-discuss@sourceware.cygnus.com
Cc: Peter Nicholson; Justin Urbanski
Subject: GCJ on Linux




We have just installed gcj on a Linux/intel machine. When we compile a trivial hello world program we get a segmentation violation. Does GCJ work under Linux on intel?

Our system details:
Mandrake Linux 6.1 


[root@zwolb00c gcc]# uname -a
Linux zwolb00c.asiapac.nortel.com 2.2.13-7mdksmp #1 SMP Wed Sep 15
16:38:50 CEST 1999 i686 unknown 


[root@zwolb00c gcc]# gcc -v
Reading specs from /usr/local/lib/gcc-lib/i686-pc-linux-gnu/2.95.1/specs 


gcc version 2.95.1 19990816 (release) 


[root@zwolb00c gcc]# gcj -dumpversion
2.95.1
[root@zwolb00c gcc]# gcj -dumpmachine
i686-pc-linux-gnu 



Hardware is dual Celerons 



----------------------
Andrew Zahra, Nortel Networks - Wollongong Australia. andzahra@nortelnetworks.com
Tel: +61 2 4224 2872   ESN: 639 2872     Fax: +61 2 4224 2801  Mobile: +61 428 403 759
Box U87, Uni of Wollongong
Wollongong, NSW 2500
Australia 

Please, there now has to be someone who can get this working!

[Me Myself and I]

I'm having trouble getting
  
gcc-java-4.6.2.tar
  
working under windows 7 mingw32. I have read the instructions with that download,
and find that key scripts just don't want to work.  I have also become aware
of the instructions at
 
http://rmathew.com/articles/gcj/bldgcj.html
 
which claims that gcj inside windows can be done
 
 
-Is there a simple set of commands I can use to get my compiler download
built and working?
 
Can someone please help? 		 	   		  

Re: Please, there now has to be someone who can get this working!

[David Paterson]

On 21 February 2012 05:32, Me Myself and I <stargate7thsymbol@live.co.uk> wrote:
>
> I'm having trouble getting
>
> gcc-java-4.6.2.tar
>
> working under windows 7 mingw32. I have read the instructions with that download,
> and find that key scripts just don't want to work.  I have also become aware
> of the instructions at
>
> http://rmathew.com/articles/gcj/bldgcj.html
>
> which claims that gcj inside windows can be done
>
>
> -Is there a simple set of commands I can use to get my compiler download
> built and working?
>
> Can someone please help?

Well, I can't help directly, since I've no experience with GCJ (I'm
only using C/C++) but the page you linked to gives fairly detailed
instructions on getting it running.  Have you tried following these?

You can set up a dual boot with Linux very easily, and I think that
would be the easiest approach if you don't have access to a separate
Linux machine.

David P.

GCJ on Linux

[Me Myself and I]

Does gcj on Linux give the option to compile for windows?

Can someone tell me what the appropriate windows switch is?

I have a 64 bit Linux OS install.  IS there a 32 bit compile switch, and does anyone know it?

 		 	   		  

Re: GCJ on Linux

[Jonathan Wakely]

On 21 February 2012 10:30, Me Myself and I wrote:
>
> Does gcj on Linux give the option to compile for windows?

No.  GNU/Linux and Windows have entirely different, incompatible
runtime environments, you can't just say "I want this to run on
Windows" and expect a GNU/Linux compiler to link to the Windows
runtime.  You'd need a cross-compiler targeting Windows, as described
at rmathew's document that you've been posting, which would need
copies of all the Windows runtime files (i.e. the binaries for
"mingw-runtime" and "w32api")

> Can someone tell me what the appropriate windows switch is?
>
> I have a 64 bit Linux OS install.  IS there a 32 bit compile switch, and does anyone know it?

Assuming you're talking about x86, it's -m32, as documented in the GCC manual.

Maybe it would be easier to just run normal Java code on Windows,
instead of compiling to native code with gcj.

GCJ on Linux

[Andrew Zahra]

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Title: GCJ on Linux





We have just installed gcj on a Linux/intel machine. When we compile a trivial hello world program we get a segmentation violation. Does GCJ work under Linux on intel?

Our system details:
Mandrake Linux 6.1


[root@zwolb00c gcc]# uname -a
Linux zwolb00c.asiapac.nortel.com 2.2.13-7mdksmp #1 SMP Wed Sep 15
16:38:50 CEST 1999 i686 unknown


[root@zwolb00c gcc]# gcc -v
Reading specs from /usr/local/lib/gcc-lib/i686-pc-linux-gnu/2.95.1/specs


gcc version 2.95.1 19990816 (release)


[root@zwolb00c gcc]# gcj -dumpversion
2.95.1
[root@zwolb00c gcc]# gcj -dumpmachine
i686-pc-linux-gnu



Hardware is dual Celerons



----------------------
Andrew Zahra, Nortel Networks - Wollongong Australia. andzahra@nortelnetworks.com
Tel: +61 2 4224 2872   ESN: 639 2872     Fax: +61 2 4224 2801  Mobile: +61 428 403 759
Box U87, Uni of Wollongong
Wollongong, NSW 2500
Australia

Re: GCJ on Linux

[Alexandre Petit-Bianco]

Andrew Zahra writes:

> We have just installed gcj on a Linux/intel machine. When we compile
> a trivial hello world program we get a segmentation violation. Does
> GCJ work under Linux on intel?

Yes. If you can build a test case containing code you can make public,
then you can file a PR ( http://sourceware.cygnus.com/cgi-bin/gnatsweb.pl )
and someone will be able to tell you whether this is an already fixed,
known or new bug.

I'm assuming you're getting a compiler bug, as opposed to a runtime
bug. Am I right?

./A

RE: GCJ on Linux

[Boehm, Hans]

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Title: GCJ on Linux



Assuming this is a runtime failure, it's likely to be 
caused by the fact that Mandrake 6.1 aparently uses a kernel configured for > 
1GB physical memory.  This causes the main process stack to start at an 
address different from what the garbage collector expects.  This is fixed 
in more recent versions of the garbage collector.
 
Hans

  -----Original Message----- From: Andrew Zahra 
  [mailto:andzahra@nortelnetworks.com] Sent: Monday, January 24, 2000 
  5:48 PM To: java-discuss@sourceware.cygnus.com Cc: Peter 
  Nicholson; Justin Urbanski Subject: GCJ on 
Linux
  We have just installed gcj on a Linux/intel 
  machine. When we compile a trivial hello world program we get a segmentation 
  violation. Does GCJ work under Linux on intel?
  Our system details: Mandrake Linux 6.1 
  [root@zwolb00c gcc]# uname -a Linux zwolb00c.asiapac.nortel.com 2.2.13-7mdksmp #1 SMP Wed 
  Sep 15 16:38:50 CEST 1999 i686 
  unknown 
  [root@zwolb00c gcc]# gcc -v Reading specs from 
  /usr/local/lib/gcc-lib/i686-pc-linux-gnu/2.95.1/specs 
  gcc version 2.95.1 19990816 (release) 
  [root@zwolb00c gcc]# gcj -dumpversion 
  2.95.1 [root@zwolb00c gcc]# gcj -dumpmachine i686-pc-linux-gnu 
  Hardware is dual Celerons 
  ---------------------- Andrew Zahra, Nortel Networks - Wollongong 
  Australia. andzahra@nortelnetworks.com Tel: +61 2 4224 2872   ESN: 639 2872     
  Fax: +61 2 4224 2801  Mobile: 
  +61 428 403 759 Box U87, Uni of 
  Wollongong Wollongong, NSW 
  2500 Australia