Re: autoconf macro to get integer sizes in bits

[Russ Allbery]

address@hidden writes:

> I'm wondering about the existence of a macro that sets integer sizes
> in bits. We'd like to define variables to AC_SUBST into header.in
> files to set int32_t, int64_t, etc. based on the results of the
> desired macro.
>
> I'm aware of the existence of AC_CHECK_SIZEOF that returns integer
> sizes in bytes. If we have to write the macro ourselves we'd probably
> use these. I'm just wondering if someone has already done the work to
> get the bit sizes back. One macro call that sets results for long,
> long long, etc. would be ideal.

Are AC_TYPE_INT8_T, AC_TYPE_INT16_T, AC_TYPE_INT32_T, etc. what you
want?  They're regular macros in the current version of Autoconf.

-- 
Russ Allbery (address@hidden)             <http://www.eyrie.org/~eagle/>