Re: MIPS libstdc++-v3 x86-x-mips-elf doesn't build

["H . J . Lu" <hjl at lucon dot org>]

On Mon, Jul 30, 2001 at 10:45:39AM -0700, Benjamin Kosnik wrote:
> 
> > All targets which define _MIPS_ISA have sgidefs.h.
> 
> Can you find a way to differentiate between the two without _MIPS_ISA or 
> sgidefs.h?

The whole idea of config/cpu/mips/bits/atomicity.h is to use the MIPS
II instructions when gcc is generating code to run on MIPS II or above. 
The only reliable way I know of to detect it in the preprocessor is to
check _MIPS_ISA. If a target doesn't define _MIPS_ISA, which requires
sgidefs.h, it doesn't make any senses to use a mips specific
atomicity.h since the only thing it does is to support _MIPS_ISA.

BTW, some mips targets have

%{mips4:-U__mips -D__mips=4 -D__mips64}

But there is nothing for -mips2. If we want to add it for other mipss
target, I'd suggest

http://gcc.gnu.org/ml/gcc-patches/2001-07/msg01937.html


> 
> Again, what is the intent here? Why can't something like the sparc 
> configuration process be used?

You lost me here. I am not familiar with the sparc configuration
process.


H.J.