On 4/11/07, loic laronze <[EMAIL PROTECTED]> wrote:
> Hello,
>
> I'm trying to build Simgear in order to build FlightGear.
>
> Here is one part of the error message:
>
> soundmgr_openal.cxx:313: error: `isnan' undeclared (first use this function)
>
> Configuration:
> Cygwin_NT-5.1

Looking at the top of soundmgr_openal.cxx you can see there is some
magic needed to get isnan. This is of particular interest:

#if defined (__CYGWIN__)
#include <ieeefp.h>
#endif

Verify that the __CYGWIN__ macro is defined, that you have ieeefp.h
and that it exports isnan.

Greets,
Csaba

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