Re: [Plib-devel] [Fwd: [TuxKart-users] I have a compilation problem]

[Steve B. <sjb...@ai...>]

Norman Vine wrote:
> 
> Steve Baker writes:
> >>
> >
> >> /usr/include/plib/sg.h:842: `FLT_MAX' undeclared (first use
> >this function)
> >
> >...
> >
> >This seems to be related to the problem with FLT_EPSILON being
> >undefined in some places and <float.h> being "missing" sometimes.
> >
> >Dunno if anyone can shed any light on this - but indeed, the
> >classic C header
> >"/usr/include/float.h" is not present under my SuSE 6.4
> >system...and none of
> >the other headers in /usr/include or and of it's
> >subdirectories seem to have
> >a definition for FLT_MAX.
> >
> 
> Steve,
> 
> I went through this torment of not seeing  float.h when I first started
> using gcc.  Then one day I noticed that a program was complaining
> about conflicting with <float.h>  after much searching I finally found
> it hiding in
> 
> / lib / gcc-lib / i686-pc-cygwin / 2.95.2 / include
> 
> I think that this is standard for gcc
> ( substitute your machine type for i686-pc-cygwin
>   and 2.95.2 for your version of gcc in the above )
> and that you can just include <float.h> and it will be
> automagically picked up.
> 
> I believe the rationale behind this is that float.h is very
> compiler and machine specific and by doing it this way
> gcc can support cross-compiling and native-compiling
> on the same host :-)

Yep - that make sense - so the compiler should know where the
magic include directory is.  In your case it knows to look
in i686-pc-cygwin/2.95.2 - and in my case, it knows about

/usr/lib/gcc-lib/i486-suse-linux/2.95.2/include/float.h

...but how does it know that this is a SuSE Linux machine?

Our friend over on TuxKart-users (who is unfortunately
not a programmer) is getting complaints that you and I
don't see.

Perhaps this is a screwup in the Mandrake distro?

I hope not.

Are there any Mandrake users listening who could
check this out?

-- 
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