Re: When crosscompiling, does configure really need --build?

[Guido Draheim]

yes, this warning had been annyoing me too, but it's just a warning,
it still works without any further problems - btw, have you tried
to configure --host=ppc_405 ?? Or does such not work...

Dan Kegel wrote:
> I'm using autoconf 2.53.  
>
> When I run configure, I override CC and the like
> in the environment to point to my cross-compiler like this:
>
> CC=/opt/hardhat/devkit/ppc/405/bin/ppc_405-gcc
> AR=/opt/hardhat/devkit/ppc/405/bin/ppc_405-ar
> RANLIB=/opt/hardhat/devkit/ppc/405/bin/ppc_405-ranlib CFLAGS="-mcpu=403
> -D__PPC405__"  ./configure --prefix=/
>
> Configuring without --host or --build yields the error
> "If you meant to cross compile, use `--host'."
>
> Configuring with --host but without --build yields the warning
> "configure: WARNING: If you wanted to set the --build type, don't use
> --host.
>     If a cross compiler is detected then cross compile mode will be used."
>
> So I configure with both --host and --build, but that's really annoying,
> as I posted originally.  I just can't win.  How do I configure for
> cross-compiling
> without warnings or errors, and without hard-coding info about the build
> machine into my build scripts?
> - Dan
>
> -----Original Message-----
> From: Akim Demaille
> To: Guido Draheim
> Cc: Dan Kegel; 'address@hidden'
> Sent: 01.10.2002 23:02
> Subject: Re: When crosscompiling, does configure really need --build?
>
>
> > > > > > "Guido" == Guido Draheim <address@hidden> writes:
>
> Guido> Dan Kegel wrote:
>
> > > I've noticed lately that I need to specify --build when configuring
> > > software for cross-compilation.  This is a big burden, because I
> > > write portable build scripts that invoke configure, make, etc.  It
> > > seems somewhat absurd, but the best way I can figure to find out
> > > what to pass to --build is to run a second layer of autoconf on my
> > > build script.  Please, someone tell me I don't really need to
> > > specify --build...
>
> Guido> I never did, --host was all what was needed...
>
> Maybe he is referring to 2.13 (who knows: I see no version number)
> which was quite different wrt this.