[patch] Fix a couple of libstdc++ failures on uclinux (Take 3)

[Paolo Bonzini]

Kazu Hirata wrote:
> Hi,
> 
> Attached is a revised patch to several libstdc++ failures on uclinux.
> 
> The previous iteration was posted at:
> 
> http://gcc.gnu.org/ml/gcc-patches/2007-10/msg00135.html
> 
> In this iteration, I've fixed
> 
> FAIL: 26_numerics/headers/cmath/c99_classification_macros_c++.cc (test for excess errors)
> 
> that HP encountered by incorporating an additional patch from Richard.
> (See the first hunk of acinclude.m4.)  Joseph says:
> 
>   "This fails because libstdc++ didn't get configured with the
>   required C99 support.  That was because a configure test failed with
>   a missing reference to __fpclassify.  That was because the test
>   wasn't linking with -lm."
> 
> Tested on m68k-uclinux.  OK to apply?

Ok.

Paolo