RE: [Plib-users] Compiling problems in SGI Irix 6.5.7

[Norman V. <nh...@ca...>]

Wein Gui writes:
>
>I am trying my first compilation of Plib for FlightGear, and use SGI
>Octane machine's 7.3 C++ compiler in IRIX 6.5.7.
>

Hmm,  Looks like <float.h> is not getting picked up
by your compiler  Try adding 

#include <float.h> to the top of offenfing files

>cc-1020 CC: ERROR File = sgIsect.cxx, Line = 29
>  The identifier "FLT_EPSILON" is undefined.
>
>    if ( dnorm < FLT_EPSILON )
>                 ^
>
> 
>I define the FLT_EPSILON to a value randomly, say, 1.0, 
>it continues "make" and stops at another big error:
>
>-------------------Error 2 begin-----------------
>              
>
>cc-1133 CC: ERROR File = ssgSimpleState.cxx, Line = 18
>  Expression must be a modifiable lvalue.
>
>    specular_colour = src -> specular_colour ;
>    ^
>

Known problem fix is to replace offending lines wirh
  sgCopyVec4 ( specular_colour, src -> specular_colour ) ;
  sgCopyVec4 ( emission_colour, src -> emission_colour ) ;
  sgCopyVec4 (  ambient_colour, src ->  ambient_colour ) ;
  sgCopyVec4 (  diffuse_colour, src ->  diffuse_colour ) ;


Welcome Aboard

Norman