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
