Re: [RFC/PATCH 1/2] Teach Solaris that _XOPEN_SOURCE=600 really menas XPG6

[Brandon Casey <casey@nrlssc.navy.mil>]

Jeff King wrote:
> On Thu, May 28, 2009 at 11:46:50AM -0500, Brandon Casey wrote:
> 
>> So we either require compiling with a c99 compiler (by ensuring that
>> _XPG6 is set) or exclude compiling with a c99 compiler on sun (by
>> ensuring that _XPG6 is not set).  Actually, this would only affect Solaris
>> versions which support XPG6.  Solaris 11 and 10 do.  I don't know about
>> Solaris 9 and 8.  Solaris 7 doesn't.
>>
>> Which do we want to do?
> 
> FWIW, I didn't even try using sun's cc. I have been doing all of my
> builds using gcc 3.1.1 (from around 2002, which is what happens to be
> available on the old-ish Solaris install at my university).

It's not the compiler that prevents compilation.  It's the header files.

You mentioned that on Solaris 8 there was only a single declaration for
iconv.  There was not a macro check for _XPG6.  I suspect that Solaris 8
does not support XPG6, so your compilation is just falling back to XPG4.
The same thing happens on Solaris 7.  On Solaris 10, if the macros are
set such that _XPG6 becomes set, then compilation will fail if the
compiler is not a c99 one.

-brandon