Re: enable long long and long double support in printf/scanf

[Jeff Johnston <jjohnstn at redhat dot com>]

Hi Artem,

  I haven't forgotten about this.  It needs a tweak and some testing.  The 
tweak I am referring to is that there should be a mechanism for the configure 
options to override the platform defaults.  For example, if a user configures 
with --disable-newlib-io-long-long, this should take precedence even though the 
default may be "yes" for newlib_io_long_long on a particular platform.  I'll 
take care of implementing this.  After looking, I noticed a similar mechanism is 
needed for some other newlib configuration options.

-- Jeff J.

Artem B. Bityuckiy wrote:
> Hello.
>
> Here is the patch that:
>
> 1. Adds --enable-newlib-io-long-long and --enable-newlib-io-long-double 
> configure script options to allow users to enable long long and long 
> double types support in printf/scanf series functions.
> 2. Removes direct passing -DWANT_PRINTF_LONG_LONG and -DWANT_IO_LONG_DBL 
> command line arguments when compiling Newlib (see configure.host).
> 3. Adds new _WANT_IO_LONG_LONG and _WANT_IO_LONG_DOUBLE macros to 
> newlib.hin
> 4. Uses new _WANT_IO_LONG_LONG and _WANT_IO_LONG_DOUBLE macros from 
> newlib.h instead of old WANT_PRINTF_LONG_LONG and WANT_IO_LONG_DBL macros.
>
> Also, there are 2 small changes:
> 1. Include <reent.h> in powerpc's printf/scanf
> 2. Remove junk newlib_cflags=${newlib_cflags} from configure.host
>
> Note: aclocal.m4 and configure form newlib/ directory should be 
> regenerated.
>
> Please, see and commit if consider necessary.