Re: AIX 5.1 xlc va_copy (stdarg patch)

[Peter O'Gorman]

On Wed, Feb 27, 2008 at 05:03:01AM +0100, Bruno Haible wrote:

> Instead, how about generating the stdarg.h replacement only for
>   defined _AIX && !defined __GNUC__
> and letting it look like this:
> 
> #ifndef _GL_STDARG_H
> #include "/usr/include/stdarg.h"
> #ifndef va_copy
> #define va_copy(a,b) ((a) = (b))
> #endif
> #endif
> 
> It should be safe to assume that for non-GNU compilers on AIX the <stdarg.h>
> is in /usr/include.

I am not sure that I agree.

Since this problem will only exist on compilers and systems without
va_copy, __va_copy and #include_next, I think it is probably a safe
bet to hardcode ///usr/include/stdarg.h on all such systems.

The only system that we have that does not have #include_next with
the native compiler is aix4.3.3 with xlc. Even there #include_next is
available with -qlanglvl=extc89, or simply invoking the compiler with
cc rather than xlc.

This patch hardcodes ///usr/include/stdarg.h if the system does not
have #include_next, va_copy or __va_copy.

Peter

gnulib_stdarg.patch
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