compiler standards (and/or min gcc version) supported with installed headers ?

[Joseph S. Myers]

On Wed, 2 Jan 2013, Carlos O'Donell wrote:

> I say we agree that 2.95.3 is the oldest compiler we will support
> for compiling userspace applications using glibc headers.

Given that the headers are generally meant to support non-GCC compilers, I 
think all you might gain is elimination of cases specifically for older 
GCC, so that older GCC uses the same cases as non-GCC.  Simply changing 
__GNUC_PREREQ (2, 95) to __GNUC__ is hardly a gain.  (And where the 
older-GCC case is simply an optimization, or where the older-GCC and 
non-GCC cases have similar functionality that's not fully conforming, I 
think a more recent baseline such as 4.1 would be reasonable.)

-- 
Joseph S. Myers
joseph@codesourcery.com