contrib/ntp/sntp/m4/ntp_rlimit.m4

   1 dnl ######################################################################
   2 dnl rlimit capabilities checks
   3 AC_DEFUN([NTP_RLIMIT_ITEMS], [
   4
   5 AC_CACHE_CHECK(
   6     [for RLIMIT_MEMLOCK],
   7     [ntp_cv_rlimit_memlock],
   8     [AC_COMPILE_IFELSE(
   9         [AC_LANG_PROGRAM(
  10             [[
  11                 #ifdef HAVE_SYS_TYPES_H
  12                 # include <sys/types.h>
  13                 #endif
  14                 #ifdef HAVE_SYS_TIME_H
  15                 # include <sys/time.h>
  16                 #endif
  17                 #ifdef HAVE_SYS_RESOURCE_H
  18                 # include <sys/resource.h>
  19                 #endif
  20             ]],
  21             [[
  22                 getrlimit(RLIMIT_MEMLOCK, 0);
  23             ]]
  24         )],
  25         [ntp_cv_rlimit_memlock=yes],
  26         [ntp_cv_rlimit_memlock=no]
  27     )]
  28 )
  29 case "$ntp_cv_rlimit_memlock" in
  30  yes)
  31     AC_SUBST([HAVE_RLIMIT_MEMLOCK])
  32     HAVE_RLIMIT_MEMLOCK=" memlock 32"
  33 esac
  34
  35 AC_CACHE_CHECK(
  36     [for RLIMIT_STACK],
  37     [ntp_cv_rlimit_stack],
  38     [AC_COMPILE_IFELSE(
  39         [AC_LANG_PROGRAM(
  40             [[
  41                 #ifdef HAVE_SYS_TYPES_H
  42                 # include <sys/types.h>
  43                 #endif
  44                 #ifdef HAVE_SYS_TIME_H
  45                 # include <sys/time.h>
  46                 #endif
  47                 #ifdef HAVE_SYS_RESOURCE_H
  48                 # include <sys/resource.h>
  49                 #endif
  50             ]],
  51             [[
  52                 getrlimit(RLIMIT_STACK, 0);
  53             ]]
  54         )],
  55         [ntp_cv_rlimit_stack=yes],
  56         [ntp_cv_rlimit_stack=no]
  57     )]
  58 )
  59 case "$ntp_cv_rlimit_stack" in
  60  yes)
  61     AC_SUBST([HAVE_RLIMIT_STACK])
  62     HAVE_RLIMIT_STACK=" stacksize 50"
  63 esac
  64
  65 ])dnl
  66 dnl ======================================================================