Re: new macro: AC_C_RESTRICT

[Akim Demaille]

| Hi Akim!

Salut !

| I see your point and like the idea of separating them.  However,
| a big advantage with the current, all-in-config.h, approach is that
| it works even from lib/*.[ch] files.  In coreutils, all src/*.c
| files include system.h, but many of those in lib/ come from glibc,
| and having them include "system.h" would not be appropriate.

Yep, I know this.  But I think that this trend is only due to history.
I don't know if we should stick to this.

I'm not saying we have to make that move now, I'm mostly asking for
other opinions.