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From: Pedro Alves <pedro@codesourcery.com>
To: gdb@sourceware.org
Subject: Re: gdb darwin target on Linux host?
Date: Wed, 20 Oct 2010 14:26:00 -0000
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Cc: Tristan Gingold <gingold@adacore.com>, Peter Steiner <sp@med-2-med.com>
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On Wednesday 20 October 2010 15:20:49, Tristan Gingold wrote:
> 
> On Oct 20, 2010, at 3:52 PM, Peter Steiner wrote:
> 
> > Hi
> > 
> > I try to compile a darwin-target gdb running on a Linux host:
> > 
> > ./configure --prefix=/usr/local/gdb --target=x86_64-darwin
> > 
> > this works up to the end of configure & make however does NOT generate a
> > gdb binary! After make install the bin directory is empty and NO gdb
> > binary has been linked at all.
> > 
> > if I do:
> > 
> > ./configure --prefix=/usr/local/gdb --target=i386-darwin
> > 
> > this creates a gdb binary however it cannot read 64bit binaries from
> > darwin. Any idea what is wrong?
> 
> Could you post the log messages ?  I suppose that if no binary is built, then an error has occurred.
> 
> Not sure why you try to build such a tool, as it would be basically useless to debug.
> 
> 

Apparently, the top-level configure is finicky about darwin versions:

  i[[3456789]]86-*-darwin*)
    noconfigdirs="$noconfigdirs ld gprof"
    noconfigdirs="$noconfigdirs sim target-rda"
    ;;
  x86_64-*-darwin[[912]]*)
    noconfigdirs="$noconfigdirs ld gas gprof"
    noconfigdirs="$noconfigdirs sim target-rda"
    ;;
  *-*-darwin*)
    noconfigdirs="$noconfigdirs ld gas gdb gprof"
                                       ^^^
    noconfigdirs="$noconfigdirs sim target-rda"
    noconfigdirs="$noconfigdirs ${libgcj}"
    ;;


Something like "--target=x86_64-darwin10" instead works, and
I suppose "--target=i386-darwin --enable-64-bit-bfd" would
solve the OPs second attempt.

-- 
Pedro Alves