[Plib-users] Compiling problems in SGI Irix 6.5.7

[Wein G. <cr...@us...>]

 
  Hi, friends,

  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.

  I have installed all the needed libraries without any problems and
  configure is happy. But now when I tried to "make", it stops on an 
  error:

  --------------------------Error 1-------------------------- 
  CC -DPACKAGE=\"plib\" -DVERSION=\"1.1.11\" -DHAVE_LIBGLCORE=1
  -DHAVE_LIBGL=1 -DHAVE_LIBGLU=1 -DHAVE_LIBGLUT
  =1 -DHAVE_LIBAUDIO=1 -DSTDC_HEADERS=1 -DHAVE_GL_GL_H=1 -DHAVE_GL_GLU_H=1
  -DGLUT_IS_PRESENT=1 -I. -I. -g -I/usr/local/include
  -L/usr/local/lib -c sgIsect.cxx
  cc-1020 CC: ERROR File = sgIsect.cxx, Line = 29
  The identifier "FLT_EPSILON" is undefined.

  if ( dnorm < FLT_EPSILON )
  ^

  cc-1020 CC: ERROR File = sgIsect.cxx, Line = 89
  The identifier "FLT_EPSILON" is undefined.

  if ( sgAbs ( tmp ) < FLT_EPSILON )
  ^

  cc-1020 CC: ERROR File = sgIsect.cxx, Line = 127
  The identifier "FLT_EPSILON" is undefined.

  if ( dist < FLT_EPSILON )
  ^
  3 errors detected in the compilation of "sgIsect.cxx".
  *** Error code 2 (bu21)
  *** Error code 1 (bu21)
  *** Error code 1 (bu21)
  -------------------Error 1 end-----------------------




  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 ;
  ^

  cc-1133 CC: ERROR File = ssgSimpleState.cxx, Line = 19
  Expression must be a modifiable lvalue.

  emission_colour = src -> emission_colour ;
  ^

  cc-1133 CC: ERROR File = ssgSimpleState.cxx, Line = 20
  Expression must be a modifiable lvalue.

  ambient_colour = src -> ambient_colour ;
  ^

  cc-1133 CC: ERROR File = ssgSimpleState.cxx, Line = 21
  Expression must be a modifiable lvalue.

  diffuse_colour = src -> diffuse_colour ;
  ^

  4 errors detected in the compilation of "ssgSimpleState.cxx".
  *** Error code 2 (bu21)
  *** Error code 1 (bu21)
  *** Error code 1 (bu21)

  ------------------------------------


  How to solve these problems? Would you please kindly enough
  to help me to finish "make" in SGI environment?

  Many thanks.

  -Wein


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