m4/sys_times_h.m4

   1 # Configure a replacement for <sys/times.h>.
   2 # serial 8
   3
   4 # Copyright (C) 2008-2014 Free Software Foundation, Inc.
   5 # This file is free software; the Free Software Foundation
   6 # gives unlimited permission to copy and/or distribute it,
   7 # with or without modifications, as long as this notice is preserved.
   8
   9 # Written by Simon Josefsson.
  10
  11 AC_DEFUN([gl_SYS_TIMES_H],
  12 [
  13   AC_REQUIRE([gl_SYS_TIMES_H_DEFAULTS])
  14
  15   dnl <sys/times.h> is always overridden, because of GNULIB_POSIXCHECK.
  16   gl_CHECK_NEXT_HEADERS([sys/times.h])
  17   if test $ac_cv_header_sys_times_h = yes; then
  18     HAVE_SYS_TIMES_H=1
  19     AC_CHECK_TYPES([struct tms], [], [HAVE_STRUCT_TMS=0], [[
  20 #include <sys/times.h>
  21       ]])
  22   else
  23     HAVE_SYS_TIMES_H=0
  24     HAVE_STRUCT_TMS=0
  25   fi
  26   AC_SUBST([HAVE_SYS_TIMES_H])
  27
  28   dnl Check for declarations of anything we want to poison if the
  29   dnl corresponding gnulib module is not in use.
  30   gl_WARN_ON_USE_PREPARE([[
  31 /* Some systems have incomplete headers.  */
  32 #if !(defined __GLIBC__ && !defined __UCLIBC__)
  33 # include <time.h>
  34 #endif
  35 #include <sys/times.h>
  36     ]], [times])
  37 ])
  38
  39 AC_DEFUN([gl_SYS_TIMES_MODULE_INDICATOR],
  40 [
  41   dnl Use AC_REQUIRE here, so that the default settings are expanded once only.
  42   AC_REQUIRE([gl_SYS_TIMES_H_DEFAULTS])
  43   gl_MODULE_INDICATOR_SET_VARIABLE([$1])
  44 ])
  45
  46 AC_DEFUN([gl_SYS_TIMES_H_DEFAULTS],
  47 [
  48   GNULIB_TIMES=0;     AC_SUBST([GNULIB_TIMES])
  49   HAVE_STRUCT_TMS=1;  AC_SUBST([HAVE_STRUCT_TMS])
  50   HAVE_TIMES=1;       AC_SUBST([HAVE_TIMES])
  51 ])