[Pyrex] #if

[Francesc Alted]

A Divendres 17 Octubre 2003 19:32, Francesc Alted va escriure:
>
> cdef int ucl_version
> cdef extern from "myucl.h":
>   int register_ucl()
>
> # Initialize & register ucl
> ucl_version = register_ucl()
>
> then, in the myucl.c, you have the next definition of register_ucl:
>
> #ifdef _windows
> #   include "ucl/ucl.h"
> #endif
>
> int register_ucl(void) {
> #ifdef _windows
>   /* Init the ucl library */
>   if (ucl_init()!=UCL_E_OK)
>     printf("Problems initializing UCL library\n");
>   return UCL_VERSION; /* lib is available */
> #else
>   return 0; /* lib is not available */
> #endif /* _windows */

Ooops!, I forgot to mention that you need to conveniently wrap the ucl
routines depending if you are in windows or not:

size_t ucl_deflate(unsigned int flags, size_t cd_nelmts,
		   const unsigned int cd_values[], size_t nbytes,
		   size_t *buf_size, void **buf)
{
  size_t ret_value = 0;
#ifdef HAVE_UCL_LIB    #defined in ucl/ucl.h
  int status;
  size_t  nalloc = *buf_size;
  ucl_uint out_len = (ucl_uint) nalloc;
  /* Make the calls to ucl library here */
 ...
#endif  /* HAVE_UCL_LIB */

  return ret_value;  /* dummy function in case you are not on windows */
}

so as to the linker won't complain.

Cheers,

-- 
Francesc Alted