build problem on HPUX 11.00

["Gansser, Martin" <MGansser inneo de>]

Hi,

I tried to compile dia-0.92.2 on HPUX11.00 with gnome-2.4, but this
fails with the following error message:

checking math.h usability... yes
checking math.h presence... yes
checking for math.h... yes
checking for isinf in -lm... no
checking ieeefp.h usability... no
checking ieeefp.h presence... no
checking for ieeefp.h... no
configure: error: Can't find neither a definition of
                           isinf nor ieeefp.h
make: *** [configure-work/main.d/dia-0.92.2/configure] Error 1

on HPUX 11.00 there is a function() isinf:

# man isinf

 isinf(3M)                                                         isinf(3M)

 NAME
      isinf() - floating-point test for infinity

 SYNOPSIS
      #include <math.h>

      int isinf(floating-type x);

 DESCRIPTION
      The isinf() macro determines whether its argument value is an
      infinity.  The macro can be used with either double or float
      arguments.

      The ISO/ANSI C committee has approved the isinf() macro for inclusion
      in the C9X draft standard.

      To use this macro, compile either with the default -Ae option or with
      the -Aa and -D_HPUX_SOURCE options.  Make sure your program includes
      <math.h>.  Link in the math library by specifying -lm on the compiler
      or linker command line.

      The isinf() macro replaces the isinf() and isinff() functions, which
      are obsolete and are no longer supported.

 RETURN VALUE
      The isinf() macro returns a nonzero value if x is +-INFINITY.
      Otherwise it returns zero.

 EXAMPLE
      Take certain actions if x is infinity:

           #include <math.h>
           /*...*/
              float x;
              /*...*/
              if (isinf(x))
                 /*...*/

 ERRORS
      No errors are defined.

 SEE ALSO
      fpclassify(3M), isfinite(3M), isnan(3M), isnormal(3M), signbit(3M),
      math(5).

 Hewlett-Packard Company            - 1 -  HP-UX Release 11.00: October 1997

any ideas ?

thanks Martin