Commits on Aug 1, 2019

1. Add support for libpgmath Windows and OSX builds with clang. …

   Majority of CmakeLists.txt and lit*.cfg* changes attributable
   to PR#719: #719
   
   1) Differentiate between CMAKE_SYSTEM_PROCESSOR and
      LIBPGMATH_SYSTEM_PROCESSOR throughout libpgmath configuration
      scripts.
   
   2) Windows version of CMAKE_SYSTEM_PROCESSOR is defined as "AMD64".
      If building for Windows, set LIBPGMATH_SYSTEM_PROCESSOR to "x86_64".
      This eliminates any need for most conditional logic that applies
      to both Linux and Windows Intel 64 source/object files.
   
   3) Cleanup various L1 and L2 definitions (C preprocessor -D<def>)
      eliminating duplicates.
   
   4) Special case building of DLL in runtime/libpgmath/lib/CMakeLists.txt
      for the MSYS environment.
   
   5) To support Window's unique complex variable declarations of
      _Fcomplex and _Dcomplex, globally change declarations of the form:
   	float _Complex f
   	double _Complex d
      to:
   	float_complex_t
   	double_complex_t
   
   6) Introduce two forms of complex variable assignment:
      a) float/double static/constants use the CPP function macro
         PGMATH_CMPLX_CONST
      b) Complex variables composed of real and imaginary variables
         (not constants) use:
         float_complex_t pgmath_cmplxf(float, float);
         double_complex_t pgmath_cmplx(double, double);
   
   7) runtime/libpgmath/lib/CMakeLists.txt
      Windows: only build static version of libpgmath.

   

   gklimowicz committed Aug 1, 2019
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