Re: Cross Compiling GDB

[Daniel Jacobowitz <drow at mvista dot com>]

On Wed, Aug 20, 2003 at 10:20:47AM +0100, Chris.Pedley@arm.com wrote:
> 
> On 19/08/2003 19:31:05 gdb-owner wrote:
> >On Tue, Aug 19, 2003 at 02:00:37PM -0400, Christopher Faylor wrote:
> >> On Tue, Aug 19, 2003 at 01:43:05PM -0400, Daniel Jacobowitz wrote:
> >> >On Tue, Aug 19, 2003 at 06:40:12PM +0100, Chris.Pedley@arm.com wrote:
> >> >>Is it actually possible to cross compile GDB for anything other than
> >> >>cygwin.  In the output from ./configure when trying to configure for
> >> >>cross compiling using the GNU ARM tools I get the message: configure:
> >> >>cross-compiling for a non-cygwin target is not supported
> >> >>
> >> >>Also, can anyone confirm to me what the exact definitions of host,
> >> >>target and build are when passed to ./configure?
> >> >>
> >> >>Thanks.
> >> >
> >> >It sounds like you're using the Cygwin sources for GDB.  If you're not
> >> >building a Cygwin-targeted GDB, don't do that - or direct comments to
> >> >the cygwin list.
> >>
> >> "Cygwin sources for gdb"?  The sources for cygwin's gdb are the same as
> >> for any other platform.
> >
> >If so I apologize, but I swear I've heard of local patches from the
> >cygwin people before.  Maybe I was thinking of another tool?
> >
> >In any case, that error message doesn't come from the FSF sources
> >anywhere.
> >
> >--
> >Daniel Jacobowitz
> >MontaVista Software                         Debian GNU/Linux Developer
> 
> I presume that the GDB at the following location isn't cygwin specific?
> ftp.gnu.org/gnu/gdb/gdb-5.3.tar.gz
> 
> However, if you look at line 53 in gdb-5.3/readline/configure.in then
> it issues the error given above if cross compiling for a non-cygwin
> target.
> 
> Also my questions about build, host and target have been raised
> because I'm unsure about the check for a cross compiler at line 123
> in gdb-5.3/configure.in.  This checks whether the host and target
> are the same thing, and only assumes it is a cross compiler if they
> are different.  Why isn't this actually checking build and host?

Can you be a little clearer what you're trying to do?

First of all, that seems like a really lame bug in readline.  But it's
easily fixable.  But second, do you want a cross debugger or a native
debugger for a non-cygwin host?  $is_cross_compiler is whether the GCC
being built will be a cross compiler - that configure script is shared
with GDB.  That's a host vs target issue.

-- 
Daniel Jacobowitz
MontaVista Software                         Debian GNU/Linux Developer