Re: Guile 1.8.2 Compile Error [GAH]

["Kevin Brott" <kevin.brott@providence.org>]

On Thu, 2007-11-15 at 10:10 -0800, Kevin Brott wrote:
> On Thu, 2007-11-15 at 13:59 +0100, Ludovic Courtès wrote:
> > 
> > `Complex' in `_Complex_I' can't possibly be macro-expanded.  There must
> > be something else.
> 
> Could line 52 be expanded/dereferenced by cpp to make _Complex_I resolve
> as __I?
> 

As it turns out - that's exactly what's happening - if I replace the
'_Complex_I' macro with the short-form 'I' macro in numbers.c - cpp
still renders it as __I, and gcc can't compile it because it's not
defined.

This leads me to believe it is a GCC issue with this code directive in
guile 1.8 (which isn't in the 1.4 or 1.6 guile source trees), in that
__I is not being defined by the gcc. AIX's complex.h says specifically
"__I is provided by the AIX xlc C99 compiler" - which argues that gcc on
AIX is not providing it, hence the failure.

My best guess is a fixincludes issue, or possibly not offered on systems
not using GNU libc.

I'm still looking into a fix - as the manual substitution of _Complex_I
in numbers.c isn't workable.  Looks like it might be time for me to
start bugging gcc devs about what could be causing this.

>From the guile end - perhaps using a detect that uses whatever the old
routine was for this function - when compiler = gcc and OS = AIX ?

-- 
#include <stddisclaimer.h>
/* Kevin Brott <Kevin.Brott@Providence.org> 
 * Unix Systems Engineer - SA Group - Provtech
 * Providence Health Systems, Tigard, OR
 */


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