option enable-target-optspace overwrites CFLAGS_FOR_TARGET

option enable-target-optspace overwrites CFLAGS_FOR_TARGET

[Oliver Metz]

Hello.

I'm building a mips cross toolchain. The target libs (libgcc, libstdc++)
should be optimized for the target. But when using
"--enable-target-optspace" configure switch my CFLAGS_FOR_TARGETS are
overwritten as config/mt-ospace gets included. A similar question was asked
here [1] years ago. There is also a ten years old bug report [2].

Is this the desired behavior of --enable-target-optspace or do you consider
this as a bug?

I tried to configure with "--with-arch=4kc --with-float=soft" but this
doesn't influence the CFLAGS for gcc build.

Regards
Oliver

p.s. At crosgcc-ml nobody was able to help me. [3]

[1] http://sourceware.org/ml/newlib/2007/msg00828.html
[2] http://gcc.gnu.org/bugzilla/show_bug.cgi?id=2222
[3]
http://old.nabble.com/Optimizing-target-libraries-for-target-arch-td31700174
.html

Re: option enable-target-optspace overwrites CFLAGS_FOR_TARGET

[Ian Lance Taylor]

"Oliver Metz" <oliver.metz@gmx.de> writes:

> I'm building a mips cross toolchain. The target libs (libgcc, libstdc++)
> should be optimized for the target. But when using
> "--enable-target-optspace" configure switch my CFLAGS_FOR_TARGETS are
> overwritten as config/mt-ospace gets included. A similar question was asked
> here [1] years ago. There is also a ten years old bug report [2].
>
> Is this the desired behavior of --enable-target-optspace or do you consider
> this as a bug?

I think it's a bug.  At least it's easy to work around it.

Ian

RE: option enable-target-optspace overwrites CFLAGS_FOR_TARGET

[Oliver Metz]

> > I'm building a mips cross toolchain. The target libs (libgcc,
> > libstdc++) should be optimized for the target. But when using
> > "--enable-target-optspace" configure switch my CFLAGS_FOR_TARGETS
> are
> > overwritten as config/mt-ospace gets included. A similar question was
> > asked here [1] years ago. There is also a ten years old bug report [2].
> >
> > Is this the desired behavior of --enable-target-optspace or do you
> > consider this as a bug?
> 
> I think it's a bug.  At least it's easy to work around it.
> 
> Ian
Should I update the referenced ticket [1] or open a new one?

If including config/mt-ospace is the one and only task of
"--enable-target-optspace" then I will try to build without it and add "-Os"
to CFLAGS_FOR_TARGET.

Regards
Oliver

[1] http://gcc.gnu.org/bugzilla/show_bug.cgi?id=2222

Re: option enable-target-optspace overwrites CFLAGS_FOR_TARGET

[Ian Lance Taylor]

"Oliver Metz" <oliver.metz@gmx.de> writes:

>> > I'm building a mips cross toolchain. The target libs (libgcc,
>> > libstdc++) should be optimized for the target. But when using
>> > "--enable-target-optspace" configure switch my CFLAGS_FOR_TARGETS
>> are
>> > overwritten as config/mt-ospace gets included. A similar question was
>> > asked here [1] years ago. There is also a ten years old bug report [2].
>> >
>> > Is this the desired behavior of --enable-target-optspace or do you
>> > consider this as a bug?
>> 
>> I think it's a bug.  At least it's easy to work around it.
>> 
>> Ian
> Should I update the referenced ticket [1] or open a new one?

Can't hurt.

> If including config/mt-ospace is the one and only task of
> "--enable-target-optspace" then I will try to build without it and add "-Os"
> to CFLAGS_FOR_TARGET.

That is indeed the one and only task of --enable-target-optspace.

Ian