working with "good enough" functions

[Mike Frysinger]

the gnulib implementations of POSIX functions are pretty damn complete.  for 
most of my uses though, they're *too* complete :).

for example, current gnulib will often enable printf functions on modern 
systems (such as Linux w/glibc 2.9).  this is because extended floating point 
support breaks from time to time.  in my case, my system C library has broken 
handling of long doubles.  however, i rarely use floating point code in 
projects i work on, so the system C library could have completely hosed 
support and i still wouldnt care.  thus using the replacement versions really 
only results in bloat.

is there a standard way for addressing this ?  or should i cheat and set the 
vars to yes before calling gl_{EARLY,INIT} ?  if i add a line like this:
gl_cv_func_printf_infinite_long_double=yes
then the tests complete as i'd like ... the printf() implementation comes from 
the system C library rather than gnulib.
-mike

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