Vorbis dev - Jul 2000 - Problems linking against libvorbis.a with GnuWin32

I'm trying to link against libvorbis.a using GnuWin32 
without the Cygwin layer (that is, Mingw32). Unfortunately 
the linker complains about a missing function: rint().
This function is used a couple of times in libvorbis and
as far as I understand this is a standard C library function.

My problem is, that I cannot find rint() in any of the common DLLs
nor do I know how MSVC resolves this function. Any ideas?????

br,
Florian

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Hi Florian,

Mingw32 doesn't have rint predefined, so it should use the macro.  I've 
modified the #ifdef jungle in lib/os.h on my local copy to take this into 
account.  Most of the time, it seems as if you can use #ifdef __GNUC__ to 
take into account Mingw32 and CygWin, but this one doesn't quite work.

See if the following won't work for you in lib/os.h -- find the #ifdef's
that handle alloca() and rint() and replace them with:

#if !defined(__GNUC__) || defined(__MINGW32__)
#ifdef _WIN32
#ifndef __MINGW32
#  define alloca(x) (_alloca(x))
#endif
#  define rint      (floor((x)+0.5)
#endif
#endif

-Andy Key
>I'm trying to link against libvorbis.a using GnuWin32
>without the Cygwin layer (that is, Mingw32). Unfortunately
>the linker complains about a missing function: rint().
>This function is used a couple of times in libvorbis and
>as far as I understand this is a standard C library function.
>
>My problem is, that I cannot find rint() in any of the common DLLs
>nor do I know how MSVC resolves this function. Any ideas?????
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