FW: gcc 3.01 installation question

FW: gcc 3.01 installation question

[Debbie Gilbert]

Hi:

We are trying to install gcc version 3.01 onto an HPUX 10.20 platform. When
we attempt to compile <gcc -v> we see thread is single. We need to be
multi-threaded. Do you know how we can install or compile such that we are
multi-threaded?

We have been struggling with this for 2 weeks, and been unable to find a
solution, so your timely response would be greatly appreciated.

Thankyou very much.

Debra Gilbert

Re: FW: gcc 3.01 installation question

[Matt Hiller]

	When running configure before building gcc, use the
--enable-threads option and configure will set up gcc to use the best
known threading libraries for this target. I believe that there are
threading libraries for HPUX 10.20 that gcc likes.

--

Matt Hiller
GCC Engineer, Red Hat, Inc., Sunnyvale office

On Wed, 26 Sep 2001, Debbie Gilbert wrote:

> Hi:
> 
> We are trying to install gcc version 3.01 onto an HPUX 10.20 platform. When
> we attempt to compile <gcc -v> we see thread is single. We need to be
> multi-threaded. Do you know how we can install or compile such that we are
> multi-threaded?
> 
> We have been struggling with this for 2 weeks, and been unable to find a
> solution, so your timely response would be greatly appreciated.
> 
> Thankyou very much.
> 
> Debra Gilbert
> 

.../main.c: No such file or directory

[Wanyu Li]

Hi,
 I recently moved to use g77 on Sun station. I compiled and linked a
fortran program with -g switch. When I get in gdb to debug the program, 
 I find that the symbols from the program are loaded in, but I can see the
source code by command 'list', I get a message of
'../../../../libf2c/libF77/main.c: No such file or directory.'

 Who can tell me what problem it is? How can I fix it?

 Any answer would be  appreciated.

 Thanks.

 Wanyu Li

----------------------------------- 
500 w Prospec St.  
6H Aggie Village 
Ft.,Collins,80521 CO,U.S.A
tel:970-491-7192(w),970-491-6758(w),970-491-8898(h)  
email: 
 wanyu_li@engr.colostate.edu
 wanyu_li@yahoo.com
----------------------------------


On Tue, 2 Oct 2001, Matt Hiller wrote:

> 	When running configure before building gcc, use the
> --enable-threads option and configure will set up gcc to use the best
> known threading libraries for this target. I believe that there are
> threading libraries for HPUX 10.20 that gcc likes.
> 
> --
> 
> Matt Hiller
> GCC Engineer, Red Hat, Inc., Sunnyvale office
> 
> On Wed, 26 Sep 2001, Debbie Gilbert wrote:
> 
> > Hi:
> > 
> > We are trying to install gcc version 3.01 onto an HPUX 10.20 platform. When
> > we attempt to compile <gcc -v> we see thread is single. We need to be
> > multi-threaded. Do you know how we can install or compile such that we are
> > multi-threaded?
> > 
> > We have been struggling with this for 2 weeks, and been unable to find a
> > solution, so your timely response would be greatly appreciated.
> > 
> > Thankyou very much.
> > 
> > Debra Gilbert
> > 
> 

Re: .../main.c: No such file or directory

[Toon Moene]

Wanyu Li wrote:

>  I recently moved to use g77 on Sun station. I compiled and linked a
> fortran program with -g switch. When I get in gdb to debug the program,
>  I find that the symbols from the program are loaded in, but I can see the
> source code by command 'list', I get a message of
> '../../../../libf2c/libF77/main.c: No such file or directory.'

This means that there is no main program in your Fortran sources, i.e.,
something that starts with:

      PROGRAM BLAH
      ...
      END

Kind regards,

-- 
Toon Moene - mailto:toon@moene.indiv.nluug.nl - phoneto: +31 346 214290
Saturnushof 14, 3738 XG  Maartensdijk, The Netherlands
Maintainer, GNU Fortran 77: http://gcc.gnu.org/onlinedocs/g77_news.html
Join GNU Fortran 95: http://g95.sourceforge.net/ (under construction)

Re: .../main.c: No such file or directory

[Wanyu Li]

Hi, Toon,
 Thanks for the info, but I still haven't worked it out. My program is as
simple as
program main_f
      real x,y
      x = 10
      y = 99
      x = x*y
      write(*,*)x
      end
and I use these commands:

 g77 -g -c ttt.f -o ttt.o
 g77 -g -o ttt ttt.o
 
and I have test as belows:
 gdb ttt

GNU gdb 5.0
Copyright 2000 Free Software Foundation, Inc.
GDB is free software, covered by the GNU General Public License, and you
are
welcome to change it and/or distribute copies of it under certain
conditions.
Type "show copying" to see the conditions.
There is absolutely no warranty for GDB.  Type "show warranty" for
details.
This GDB was configured as "sparc-sun-solaris2.8"...
(gdb) file ttt
Load new symbol table from "ttt"? (y or n) y
Reading symbols from ttt...done.
(gdb) list
46      ../../../../libf2c/libF77/main.c: No such file or directory.

 Do you think it would be a problem else?

 Thanks a lot!

 Wanyu 
 

----------------------------------- 
500 w Prospec St.  
6H Aggie Village 
Ft.,Collins,80521 CO,U.S.A
tel:970-491-7192(w),970-491-6758(w),970-491-8898(h)  
email: 
 wanyu_li@engr.colostate.edu
 wanyu_li@yahoo.com
----------------------------------


On Wed, 3 Oct 2001, Toon Moene wrote:

> Wanyu Li wrote:
> 
> >  I recently moved to use g77 on Sun station. I compiled and linked a
> > fortran program with -g switch. When I get in gdb to debug the program,
> >  I find that the symbols from the program are loaded in, but I can see the
> > source code by command 'list', I get a message of
> > '../../../../libf2c/libF77/main.c: No such file or directory.'
> 
> This means that there is no main program in your Fortran sources, i.e.,
> something that starts with:
> 
>       PROGRAM BLAH
>       ...
>       END
> 
> Kind regards,
> 
> -- 
> Toon Moene - mailto:toon@moene.indiv.nluug.nl - phoneto: +31 346 214290
> Saturnushof 14, 3738 XG  Maartensdijk, The Netherlands
> Maintainer, GNU Fortran 77: http://gcc.gnu.org/onlinedocs/g77_news.html
> Join GNU Fortran 95: http://g95.sourceforge.net/ (under construction)
> 

Re: .../main.c: No such file or directory

[Toon Moene]

Wanyu Li wrote:

> (gdb) file ttt
> Load new symbol table from "ttt"? (y or n) y
> Reading symbols from ttt...done.
> (gdb) list
> 46      ../../../../libf2c/libF77/main.c: No such file or directory.
> 
>  Do you think it would be a problem else?

Whooops - I completely misread your problem report.  Yes, this has
another cause then a missing main program in your Fortran source.

The problem is that g77 doesn't build a main program that's recognisable
by gdb - it links in a "main program" from the libg2c.a library (it's
the easiest way to make it possible that Fortran programs can access
command line arguments with iargc() and getarg(n,arg).  The consequence
of this is that the debugger drops you into *this* main program, that is
written in C.

It's documented in the g77 manual that to circumvent this, you'll have
to say:

break MAIN__

before running your program in gdb.  When gdb then stops, you are able
to see the start of your Fortran program (and gdb knows that the
language is Fortran).

Hope this helps,
 
-- 
Toon Moene - mailto:toon@moene.indiv.nluug.nl - phoneto: +31 346 214290
Saturnushof 14, 3738 XG  Maartensdijk, The Netherlands
Maintainer, GNU Fortran 77: http://gcc.gnu.org/onlinedocs/g77_news.html
Join GNU Fortran 95: http://g95.sourceforge.net/ (under construction)

Re: .../main.c: No such file or directory

[Wanyu Li]

Thanks a lot, Toon. It works and has been the great help. 

Wanyu
----------------------------------- 
500 w Prospec St.  
6H Aggie Village 
Ft.,Collins,80521 CO,U.S.A
tel:970-491-7192(w),970-491-6758(w),970-491-8898(h)  
email: 
 wanyu_li@engr.colostate.edu
 wanyu_li@yahoo.com
----------------------------------


On Wed, 3 Oct 2001, Toon Moene wrote:

> Wanyu Li wrote:
> 
> > (gdb) file ttt
> > Load new symbol table from "ttt"? (y or n) y
> > Reading symbols from ttt...done.
> > (gdb) list
> > 46      ../../../../libf2c/libF77/main.c: No such file or directory.
> > 
> >  Do you think it would be a problem else?
> 
> Whooops - I completely misread your problem report.  Yes, this has
> another cause then a missing main program in your Fortran source.
> 
> The problem is that g77 doesn't build a main program that's recognisable
> by gdb - it links in a "main program" from the libg2c.a library (it's
> the easiest way to make it possible that Fortran programs can access
> command line arguments with iargc() and getarg(n,arg).  The consequence
> of this is that the debugger drops you into *this* main program, that is
> written in C.
> 
> It's documented in the g77 manual that to circumvent this, you'll have
> to say:
> 
> break MAIN__
> 
> before running your program in gdb.  When gdb then stops, you are able
> to see the start of your Fortran program (and gdb knows that the
> language is Fortran).
> 
> Hope this helps,
>  
> -- 
> Toon Moene - mailto:toon@moene.indiv.nluug.nl - phoneto: +31 346 214290
> Saturnushof 14, 3738 XG  Maartensdijk, The Netherlands
> Maintainer, GNU Fortran 77: http://gcc.gnu.org/onlinedocs/g77_news.html
> Join GNU Fortran 95: http://g95.sourceforge.net/ (under construction)
>