Re: Port getprogname module to SCO OpenServer

[Benji Wiebe]

http://osr600doc.sco.com/en/man/html.CP/cc.CP.html#cc_preassertion

Is where the predefined constants for the builtin cc are listed. Do we 
need to support a possible future port of clang to SCO OpenServer when 
OpenServer is dead?

Or just make it work with the current compilers available? (SCO's cc and 
GCC)

On 10/3/20 9:48 PM, Bruno Haible wrote:
> Tim Rice wrote:
> > Hi Bruno,
> >
> > On Sat, 3 Oct 2020, Bruno Haible wrote:
> >
> > > 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.
> > As to __SCO_VERSION__ vs __USLC__ for native compiler, I am fine
> > with __SCO_VERSION__ in this case.
> Good.
>
> > _SCO_DS is only for Openserver 5 (which the proposed patch will not work for)
> > and __SCO_VERSION__ only works for the native compiler on OpenServer 6 and
> > UnixWare 7. Sorry I did not make that clear before.
> > __sysv5__ works for the GCC 7.3.0 on 6 and 7. If clang is ported, chances
> > are extremely high it will also include the __sysv5__ manifest define.
> OK. And what about __UNIXWARE__ and __OPENSERVER__ that I see being used [1]?
> On which versions are they defined?
>
> As it starts to get confusing, maybe you can clarify things by filling in this
> table?
>
>                  |  OpenServer 5    |  OpenServer 6   |  UnixWare 7     |
>                  |                  |                 |                 |
>                  | native  |  gcc   | native  |  gcc  | native  |  gcc  |
>                  |         |        |         |       |         |       |
> ----------------+---------+--------+---------+-------+---------+-------+
> _SCO_DS         |         |        |         |       |         |       |
>                  |         |        |         |       |         |       |
> __SCO_VERSION__ |         |        |         |       |         |       |
>                  |         |        |         |       |         |       |
> __UNIXWARE__    |         |        |         |       |         |       |
>                  |         |        |         |       |         |       |
> __OPENSERVER__  |         |        |         |       |         |       |
>                  |         |        |         |       |         |       |
> __sysv5__       |         |        |         |       |         |       |
> ----------------+---------+--------+---------+-------+---------+-------+
>
> Bruno
>
> [1] 
> https://opensource.apple.com/source/X11misc/X11misc-10.1/makedepend/makedepend-1.0.1/imakemdep.h.auto.html