message: Fix for CMake package build on Mac
diff: @@ -53,7 +53,7 @@ option(ISPC_PREPARE_PACKAGE "Generate build targets for ispc package" OFF)
  if (UNIX)
  option(ISPC_STATIC_STDCXX_LINK "Link statically with libstdc++ and libgcc" OFF)
  - if (ISPC_PREPARE_PACKAGE)
  + if (ISPC_PREPARE_PACKAGE AND (NOT APPLE))
  option(ISPC_STATIC_LINK "Link statically" ON)
  else()
  option(ISPC_STATIC_LINK "Link statically" OFF)
  