Re: autoconf-2.50 docs: Common Behavior/Default Includes

[Akim Demaille]

| C99 stdint.h exists only for freestanding environments --
| i.e. environments without a C library, where the only available
| headers are float.h, iso646.h, limits.h, stdarg.h, stdbool.h,
| stddef.h, and stdint.h.  In effect, stdint.h is the freestanding part
| of inttypes.h.
| 
| Is autoconf intended for freestanding environments?  The manual
| doesn't say.  (Perhaps it should.)  

It might be too early to debate about this, (I mean, before 2.51), but
that's an interesting question.  In addition some people seems to have
problems with our using `main ()' in tests.  A friend of mine uses
Autoconf for PalmOS where `maint ()' is not to be called.

| I have the vague impression that
| the answer is "no", but if I'm wrong then most likely:
| 
|      #if HAVE_INTTYPES_H
|      # include <inttypes.h>
|      #endif
| 
| should be changed to:
| 
|      #if HAVE_INTTYPES_H
|      # include <inttypes.h>
|      #else
|      # if HAVE_STDINT_H
|      #  include <stdint.h>
|      # endif
|      #endif
| 
| in the code and in the documentation, along with all the appropriate
| underlying changes.

I do that.