Re: AX_PROG_CC_FOR_BUILD should use CFLAGS, etc. in non-crossbuilds

[Ryan Lortie]

hi,

On Sat, Jan 11, 2014, at 10:48, Paolo Bonzini wrote:
> I think the second approach is wrong.  The $cross_compiling test is
> necessary.

I agree.  After patching this manually into the configure.ac of a couple
of affected projects I see that the cross-compile check is really the
only way.

>  But you can do: initialise the variables from their host
> counterparts in the non-cross-compiling case, but not in the case that
> they are already explicitly set.
> 
> What do you think?

I think that this would be OK except that I don't understand why anyone
would possibly want to change the CFLAGS_FOR_BUILD and not the CFLAGS in
the case that they are not cross-compiling.  That seems a bit strange to
me.

I guess I could imagine a case where they care that the produced
(installed) executables are made with a particular level of optimisation
or debugging and that the tools that are only used during buildtime are
made with different levels...

Cheers