Re: Port getprogname module to SCO OpenServer

[Bruno Haible]

Tim Rice wrote:
> > +# elif defined __SCO_VERSION__ /* SCO OpenServer/UnixWare */
> 
> While __SCO_VERSION__ covers Openserver 6 and UnixWare 7,
> what is normally used for 6 and 7 is __USLC__  for the native compiler
> and __sysv5__ for gcc
> 
> Ie.
> # elif defined __USLC__ || defined __sysv5__

If the code depends only on the operating system, let's use a #if for
the operating system, not for the compilers (__USLC__). Because the day
clang gets ported to that operating systems, the condition would not
work any more.

https://sourceforge.net/p/predef/wiki/OperatingSystems/ says that
_SCO_DS can be used to test for SCO OpenServer. It seems that you say that
__SCO_VERSION__  works as well. So let's use one of these.

Bruno