Making non-standard OS checks in cmake?

[Alexander Neundorf]

On Friday 01 January 2010, Raphael Kubo da Costa wrote:
> On Friday 01 January 2010 16:31:30 Albert Astals Cid wrote:
> > A Divendres, 1 de gener de 2010, Raphael Kubo da Costa va escriure:
> > > Hey there,
> > >
> > > As you can see on my.cdash.org, both kdeadmin and kdenetwork fail to
> > > build
> > >
> > > cleanly on FreeBSD:
> > >  * kdeadmin/kuser's CMakeLists.txt's check for the need to link against
> > > -
> > >
> > > lcrypt is broken on FreeBSD,  since the crypt() function is defined in
> > > unistd.h, not crypt.h, even though -lcrypt still must be passed to the
> > > compiler
> > >
> > >  * kdenetwork/kppp has been broken since FreeBSD 8.0 - currently the
> > >  ports
> > >
> > > system just disable its build, and I'd like to do the same upstream.
> >
> > Why not fixing instead of disabling?
>
> That's the long-term solution :)
>
> I don't have the necessary FreeBSD-specific skills to know what's changed
> at operating system-level and how to fix it, so for now it's better to just
> disable it until someone steps up for the challenge (I've done something
> similar in kinfocenter).

I think a
if(NOT CMAKE_SYSTEM_NAME MATCHES FreeBSD)
or similar around kppp should be fine.
Feel free to commit this directly.

Alex