interpretor/libsndfile-1.0.25/M4/flexible_array.m4

   1 dnl @synopsis MN_C99_FLEXIBLE_ARRAY
   2 dnl
   3 dnl Dose the compiler support the 1999 ISO C Standard "stuct hack".
   4 dnl @version 1.1        Mar 15 2004
   5 dnl @author Erik de Castro Lopo <erikd AT mega-nerd DOT com>
   6 dnl
   7 dnl Permission to use, copy, modify, distribute, and sell this file for any
   8 dnl purpose is hereby granted without fee, provided that the above copyright
   9 dnl and this permission notice appear in all copies.  No representations are
  10 dnl made about the suitability of this software for any purpose.  It is
  11 dnl provided "as is" without express or implied warranty.
  12
  13 AC_DEFUN([MN_C99_FLEXIBLE_ARRAY],
  14 [AC_CACHE_CHECK(C99 struct flexible array support,
  15         ac_cv_c99_flexible_array,
  16
  17 # Initialize to unknown
  18 ac_cv_c99_flexible_array=no
  19
  20 AC_TRY_LINK([[
  21         #include <stdlib.h>
  22         typedef struct {
  23         int k;
  24         char buffer [] ;
  25         } MY_STRUCT ;
  26         ]],
  27         [  MY_STRUCT *p = calloc (1, sizeof (MY_STRUCT) + 42); ],
  28         ac_cv_c99_flexible_array=yes,
  29         ac_cv_c99_flexible_array=no
  30         ))]
  31 ) # MN_C99_FLEXIBLE_ARRAY
  32