Re: Default host other than local system

[Robert Woodworth]

no, that does not work....

here is the output from my `configure` with that suggestion:

checking for gcc... gcc
checking whether the C compiler works... yes
checking for C compiler default output file name... a.out
checking for suffix of executables...
checking whether we are cross compiling... no
checking for suffix of object files... o
checking whether we are using the GNU C compiler... yes
checking whether gcc accepts -g... yes
......

Notice how it does not look for mips-elf-gcc.

I looked at the 'configure' script generated and it does need the other
settings of 'ac_tool_prefix' and 'cross_compiling' due to the location of
the variables in the generated 'configure'

Try it with a simple two line 'configure.ac'
AC_INIT
host_alias=mips-elf



No, I don't want my site defaults to be cross-compiled by default.
Yes, this source code will only work on a very specific MIPS.


Thanks.



On Fri, Nov 12, 2010 at 11:20 AM, Ralf Wildenhues <address@hidden>wrote:

> Hello Robert,
>
> * Robert Woodworth wrote on Fri, Nov 12, 2010 at 06:48:33PM CET:
> > http://lists.gnu.org/archive/html/autoconf/2010-01/msg00039.html
> >
> > I also want to use  autoconf for an embedded system code base and I want
> to
> > force my configure script to set the cross compile environment correctly.
>
> So, you can do it exactly as suggested in the mail you cite.
>
> > I'm trying to get a team to adopt autotools for a rather large embedded
> > project, but I need to make sure the default execution of 'configure'
> does
> > the right thing without forcing the setting of 'CC' and --host and a few
> > other defaults.
>
> Well, if you absolutely have to, then put the
>    : ${host_alias="mips-elf"}
>
> line in configure.ac right after AC_INIT.  That will relieve your
> cow-orkers from creating a config.site file, but of course also make
> your package building for mips-elf rather than native by default.
>
> I do suggest you get acquainted with 'info Autoconf "Site Defaults"'
> however and reconsider this decision.
>
> > I have set the following in my 'configure.ac':
> >
> > <snip>
> > host=mips-elf
> > host_alias=mips-elf
> > ac_tool_prefix=mips-elf-
> > cross_compiling=yes
>
> The others here are not needed, as they should get set accordingly by
> the configure code.
>
> Hope that helps.
>
> Cheers,
> Ralf
>