how to compile gcc

how to compile gcc

[Jiang Long]

Hello,

I 'd like to dig into gcc internals, and would like to compile it with -g. 

I can't find any document on how to do that? I tried 

make BOOT_CFLAGS=-g CFLAGS=-g, 

but it still will add '-O2' later on. 

Any documentation on how GCC is compiled? what are the stages of the
compilation?

Thanks,

-Jiang

Re: how to compile gcc

[Rafael Ávila de Espíndola]

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On Friday 19 August 2005 20:26, Jiang Long wrote:
> Hello,
>
> I 'd like to dig into gcc internals, and would like to compile it with -g.
>
> I can't find any document on how to do that? I tried
>
> make BOOT_CFLAGS=-g CFLAGS=-g,
>
> but it still will add '-O2' later on.
>
> Any documentation on how GCC is compiled? what are the stages of the
> compilation?
yes,
http://gcc.gnu.org/install/configure.html
look at --enable-checking
and
http://gcc.gnu.org/install/build.html
There are more cflags...

The gcc/Makefile.in is also a good reference :)

> Thanks,
>
> -Jiang


Rafael

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Re: how to compile gcc

[drizzle drizzle]

If you are objective is to debug gcc, then all the necessary setup is
already done...Check this documentation
 http://gcc.gnu.org/wiki/DebuggingGCC.

dz

On 8/20/05, Rafael Ávila de Espíndola <rafael.espindola@gmail.com> wrote:
> On Friday 19 August 2005 20:26, Jiang Long wrote:
> > Hello,
> >
> > I 'd like to dig into gcc internals, and would like to compile it with -g.
> >
> > I can't find any document on how to do that? I tried
> >
> > make BOOT_CFLAGS=-g CFLAGS=-g,
> >
> > but it still will add '-O2' later on.
> >
> > Any documentation on how GCC is compiled? what are the stages of the
> > compilation?
> yes,
> http://gcc.gnu.org/install/configure.html
> look at --enable-checking
> and
> http://gcc.gnu.org/install/build.html
> There are more cflags...
> 
> The gcc/Makefile.in is also a good reference :)
> 
> > Thanks,
> >
> > -Jiang
> 
> 
> Rafael
> 
> 
>

Re: how to compile gcc

[Yao qi]

>From: drizzle drizzle <drizzle76@gmail.com>
>To: Rafael Ávila de Espíndola <rafael.espindola@gmail.com>
>CC: gcc@gcc.gnu.org
>Subject: Re: how to compile gcc
>Date: Sat, 20 Aug 2005 09:48:56 -0400
>
>If you are objective is to debug gcc, then all the necessary setup is
>already done...Check this documentation
>  http://gcc.gnu.org/wiki/DebuggingGCC.

I have tried this method on wiki about GCC debugging.  I am not sure about 
that and mail the procedure here to verify it,  maybe someone of you could 
clarify for me.  Thanks in advance.

Here goes the my procedure on GCC debugging.
1 Generate preprocessed source code wiht option -E and redirect to a file 
named a.c.expand.
2  Debug cc1 by GDB with the arguments "-c a.c.expand" to cc1

Is this a reasonable procedure to debug GCC?

Any suggestion and comments are highly appreciated!
>
>dz
>
>On 8/20/05, Rafael Ávila de Espíndola <rafael.espindola@gmail.com> wrote:
> > http://gcc.gnu.org/install/configure.html
> > look at --enable-checking
> > and
> > http://gcc.gnu.org/install/build.html
> > There are more cflags...
> >
> > The gcc/Makefile.in is also a good reference :)
> >
> > > Thanks,
> > >
> > > -Jiang
> >
> >
> > Rafael
> >

Best Regards
----------------
Yao Qi
Bejing Institute of Technology

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Re: how to compile gcc

[Yao qi]

>From: drizzle drizzle <drizzle76@gmail.com>
>To: Rafael Ávila de Espíndola <rafael.espindola@gmail.com>
>CC: gcc@gcc.gnu.org
>Subject: Re: how to compile gcc
>Date: Sat, 20 Aug 2005 09:48:56 -0400
>
>If you are objective is to debug gcc, then all the necessary setup is
>already done...Check this documentation
>  http://gcc.gnu.org/wiki/DebuggingGCC.

I have tried this method on wiki about GCC debugging.  I am not sure about 
that and mail the procedure here to verify it,  maybe someone of you could 
clarify for me.  Thanks in advance.

Here goes the my procedure on GCC debugging.
1 Generate preprocessed source code wiht option -E and redirect to a file 
named a.c.expand.
2  Debug cc1 by GDB with the arguments "-c a.c.expand" to cc1

Is this a reasonable procedure to debug GCC?

Any suggestion and comments are highly appreciated!
>
>dz
>
>On 8/20/05, Rafael Ávila de Espíndola <rafael.espindola@gmail.com> wrote:
> > http://gcc.gnu.org/install/configure.html
> > look at --enable-checking
> > and
> > http://gcc.gnu.org/install/build.html
> > There are more cflags...
> >
> > The gcc/Makefile.in is also a good reference :)
> >
> > > Thanks,
> > >
> > > -Jiang
> >
> >
> > Rafael
> >

Best Regards
----------------
Yao Qi
Bejing Institute of Technology

_________________________________________________________________
Express yourself instantly with MSN Messenger! Download today it's FREE! 
http://messenger.msn.click-url.com/go/onm00200471ave/direct/01/

Re: how to compile gcc

[Mike Stump]

On Friday, August 19, 2005, at 04:26  PM, Jiang Long wrote:
> I 'd like to dig into gcc internals, and would like to compile it with 
> -g.

cd <build>/gcc && make cc1 is another way to do it.