Re: WCHAR_MIN; WCHAR_MAX

[Ulrich Drepper <drepper at cygnus dot com>]

Benjamin Kosnik <bkoz@cygnus.com> writes:

> I can use AC_DEFINE and have things defined in config.h, and then have a
> header (say bits/std_cmath.h) that include config.h and has a mess of
> #if/#elif whatever stuff in it that determines what really happens.

Well, you said you needed it for mknumeric_limits.  If you need the
information in the installed header then this is not acceptable, of
course, and we should shoot for the fixincludes solution.

> What I'm talking about is having autoconf generate a config.h, and
> the after all the tests have been run, and all the necessary macros
> defined, having autoconf use a header template (bits/std_cmath.h.in) that
> is used to generate a (bits/std_cmath.h) that only has the correct info in
> it, no extra defines. You can do something like this with Makefiles, using
> automake and AM_CONDITIONAL (see the libstdc++/libio/Makefile.* for an
> example).

You can do this with configure as well.  You can use AC_OUTPUT to generate
arbitrary files based on all the sed information stored in config.status.

> I'm talking about this functionality for header and source files,
> and run at configure time not make time. I guess you are saying that
> this is what fixincludes is for. . . oh, joy.

Finxincludes is still the right answer, yes.

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