Frederic Bouvier
>
>
> Try moving the following code :
>
> #if defined(__MINGW32__)
> #define isnan(x) _isnan(x)
> #endif
>
> **after**
>
> #include "cloud.hxx"
>
> -Fred
>
>
> ----- Original Message -----
> From: "Giles Robertson"
>
>
> Unfortunately not:
> Making all in clouds3d
> cloud.cxx:31:1: warning: "isnan" redefined
> In file included from cloud.cxx:22:
> c:/files/mingwin/mingw/include/math.h:324:1: warning: this is
> the location of the previous definition
> cloud.cxx: In member function `bool
> SGCloudLayer::reposition(float*, float*,
> double, double, double, double)':
> cloud.cxx:712: `isnan' undeclared (first use this function)
> cloud.cxx:712: (Each undeclared identifier is reported only
> once for each
> function it appears in.)
> make[5]: *** [cloud.o] Error 1
> make[4]: *** [all-recursive] Error 1
> make[3]: *** [all-recursive] Error 1
> make[2]: *** [all-recursive] Error 1
> make[1]: *** [all] Error 2
> make: *** [all-recursive] Error 1
>
> I deleted my local copy and grabbed it fresh off CVS because
> of a conflict.
>
> What I can't follow is why it first complains that isnan has
> been redefined, and then complains that isnan is now undefined.
>
> It then compiles clean when you muck around with clouds.cxx
> like this (lies 30-33)
>
> #if defined(__MINGW32__)
> inline int (isnan)(double r) { return isnan(r); }
> #endif
>
> Diff:
> 31c
> inline int (isnan)(double r) { return isnan(r); }
>
> Still don't understand what the problem is, though.
>
>
> Giles Robertson
> [EMAIL PROTECTED]
>
>
> -----Original Message-----
> From: Frederic Bouvier [mailto:[EMAIL PROTECTED]
> Sent: 21 May 2004 16:14
> To: FlightGear developers discussions
> Subject: Re: [Flightgear-devel] SimGear compile error
>
> Giles Robertson wrote:
>
> > This was sorted out by uncommenting lines 28&29 of cloud.cxx:
> >
> > // #if defined (__APPLE__)
> > // // any C++ header file undefines isinf and isnan
> > // // so this should be included before <iostream>
> > inline int (isinf)(double r) { return isinf(r); } //See below
> > inline int (isnan)(double r) { return isnan(r); } //HACK to
> make MingW
> > MsyS build work. Find better solution ASAP. May well break other
> > systems.
> > // #endif
> >
> > (I added the end of line comments)
> > SimGear now compiles, but this is hardly a good solution.
> Does anybody
> > know what's going on here? Why is isnan() being undefined?
> >
> > I have a feeling this may have come up before, but I can't
> find it in
> > the archives, or remember the solution.
>
It's well broken when trying to compile under Cygwin. Too many error to even
start to list in clouds.cxx, I think, but by no means certain could be in
clouds_3d.
Any suggestions?
Vivian
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