autoconf macro for IEEE compiler flags

[Brian Gough]

At Thu, 20 Jul 2006 01:04:29 -0400,
Steve M. Robbins wrote:
> The main differences between GSL's current configure and the new macro
> are: (1) I chose to modify CC rather than CFLAGS, following the model
> of the standard automake macro AM_PROG_CC_STDC; and (2) I added the SH
> cpu to the case switch because it, too, supports option -mieee.
> 
> Comments? 

The one lingering problem I have with the test in GSL is that there is
no way to override it from the command-line by specifying an explicit
CFLAGS. However it hasn't generated any complaints so from that point of
view it seems ok.

-- 
Brian Gough