>
> Hi,
>
> On 29 Oct 2003 19:36:57 +0800, Gerrit Voss <[EMAIL PROTECTED]>
> wrote:
> >
> > Hi.
> >
> > On Wed, 2003-10-29 at 19:01, Haykel Ben Djemia wrote:
> >> Hi,
> >>
> >> in OpenSG/Source/Experimental/NewAction/ActorCodeGen/OSGActorWriter.cpp
> >> string::compare(int, int, char*) is used, which is OK for new libstdc++
> >> releases under linux. But the libstdc++-2.96 delivered with RedHat 7.3
> >> has the following definition: string::compare(char*, int, int). For
> >> support reasons for our E&S cluster we have to use RedHat 7.3. For the
> >> moment I compiled OpenSG by changing every strLine.compare(0, n,
> "text")
> >> with strLine.compare("text"). Could you make these changes in the
> >> OpenSG-Source and take care of it in the future or is this problematic
> >> for some reason?
> >
> > no reason I can see without having checked that the first parameter is
> > always 0 ;-) if this is the case Carsten will handle the details ;-)).
>
> alright, the first arg is always 0, but I don't like the proposed
> solution.
> Consider this:
>
> if(strLine.compare(0,5, "@@Bar") == 0) // this means the line starts
> exactly with @@Bar
>
> vs.
>
> if(strLine.compare("@@Bar") >= 0) // this means the line starts with
> anything lexicographically ordered after @@Bar, e.g. @@Foo
>
> I don't like testing with == in the second case either, as this would not
> work on lines that have trailing whitespace for example.
>
> > If not it will be a little bit trickier as I don't like to sprinkle the
> > code with a lot of ifdefs ;-)
>
> Well, ActorWriter already has a workaround member function for the missing
>
> strcasecmp on win32, I'd add another one for the string::compare problem,
> but I don't know which defines to test.
>
> Carsten
Hi,
you can do something like this:
#if defined(__linux) && __GNUC__ >= 3)
// new stdc++
#else
// old stdc++
#endif
Andreas
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