Re: Feature request: AC_PROG_CC_* macros for gnu89/gnu99-compliant compiler

[Paul Eggert]

On 02/02/2013 05:13 AM, Michał Górny wrote:
> In order to solve that properly, I would like to request having two new
> macros in autoconf: AC_PROG_CC_GNU89 and AC_PROG_CC_GNU99, in a similar
> manner to the AC_PROG_CC_C99 macro.

We've been moving in the opposite direction:
AC_PROG_CC_STDC, AC_PROG_CC_C89 and AC_PROG_CC_C99 will be marked as
obsolescent in the next version of Autoconf.  The idea
is that AC_PROG_CC should "just work", and maintainers
shouldn't have to fiddle with all those AC_PROG_CC_whatever
macros whenever a new compiler comes out.

Can you give an example of a package that has a problem,
and symptoms of the problem?  That might help us come up with
a better solution.  For example, what happens if you configure
with "./configure CC='clang -std=gnu11'"?