Keep in mind also, these Python builds are compiled with the SUN 
compilers, i.e. the ./configure command line includes  --without-gcc.  
If we do change the CC- and LINKFLAGS, those changes should only apply 
in that particular case.

Using -xlibmieee in 3 places, BASECFLAGS, LDFLAGS and LDSHARED and 
without optimization produces the following for 32-bit:

Python 2.6b1 (r26b1:64398, Jun 28 2008, 10:31:27) [C] on sunos5
Type "help", "copyright", "credits" or "license" for more information.

>>> import cmath
>>> cmath.log(100.0)
(4.6051701859880918+0j)
>>> cmath.log(2.0)
(0.69314718055994529+0j)
>>> cmath.log(100.0, 2.0)
(6.6438561897747253+0j)

>>> import math
>>> math.log(float('-inf'))
Traceback (most recent call last):
  File "<stdin>", line 1, in <module>
ValueError: math domain error