build/aclocal/ac_raf_func_which_getservbyname_r.m4

   1 dnl @synopsis AC_raf_FUNC_WHICH_GETSERVBYNAME_R
   2 dnl
   3 dnl Provides a test to determine the correct way to call
   4 dnl getservbyname_r:
   5 dnl
   6 dnl  - defines HAVE_FUNC_GETSERVBYNAME_R_6 if it needs 6 arguments (e.g linux)
   7 dnl  - defines HAVE_FUNC_GETSERVBYNAME_R_5 if it needs 5 arguments (e.g. solaris)
   8 dnl  - defines HAVE_FUNC_GETSERVBYNAME_R_4 if it needs 4 arguments (e.g. osf/1)
   9 dnl
  10 dnl An example use can be found at
  11 dnl http://raf.org/autoconf/net_getservbyname.c
  12 dnl
  13 dnl Based on Caolan McNamara's gethostbyname_r macro. Based on David
  14 dnl Arnold's autoconf suggestion in the threads faq.
  15 dnl
  16 dnl @category Misc
  17 dnl @author raf <raf@raf.org>
  18 dnl @version 2001-08-20
  19 dnl @license GPLWithACException
  20
  21 AC_DEFUN([AC_raf_FUNC_WHICH_GETSERVBYNAME_R],
  22 [AC_CHECK_FUNC(getservbyname_r,
  23     [AC_TRY_COMPILE([#include <netdb.h>],
  24         [
  25             char *name;
  26             char *proto;
  27             struct servent *se;
  28             struct servent_data data;
  29             (void) getservbyname_r(name, proto, se, &data);
  30         ],
  31         ac_cv_func_which_getservbyname_r=four,
  32         [AC_TRY_COMPILE([#include <netdb.h>],
  33             [
  34                 char *name;
  35                 char *proto;
  36                 struct servent *se, *res;
  37                 char buffer[2048];
  38                 int buflen = 2048;
  39                 (void) getservbyname_r(name, proto, se, buffer, buflen, &res);
  40             ],
  41             ac_cv_func_which_getservbyname_r=six,
  42             [AC_TRY_COMPILE([#include <netdb.h>],
  43                 [
  44                     char *name;
  45                     char *proto;
  46                     struct servent *se;
  47                     char buffer[2048];
  48                     int buflen = 2048;
  49                     (void) getservbyname_r(name, proto, se, buffer, buflen)
  50                 ],
  51                 ac_cv_func_which_getservbyname_r=five,
  52                 ac_cv_func_which_getservbyname_r=no
  53             )]
  54         )]
  55     )],
  56     ac_cv_func_which_getservbyname_r=no)
  57
  58 if test $ac_cv_func_which_getservbyname_r = six; then
  59   AC_DEFINE(HAVE_FUNC_GETSERVBYNAME_R_6)
  60 elif test $ac_cv_func_which_getservbyname_r = five; then
  61   AC_DEFINE(HAVE_FUNC_GETSERVBYNAME_R_5)
  62 elif test $ac_cv_func_which_getservbyname_r = four; then
  63   AC_DEFINE(HAVE_FUNC_GETSERVBYNAME_R_4)
  64 fi
  65
  66 ])