kc3-lang/gnulib/m4/gethrxtime.m4

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• Hash : 7acb45ce
  Author :
  Date : 2023-01-07T11:26:46
  

  gethrxtime: Rename LIB_GETHRXTIME to GETHRXTIME_LIB.
  
  * m4/gethrxtime.m4: Rename LIB_GETHRXTIME to GETHRXTIME_LIB.
  All uses changed.
  * NEWS: Mention the change.
  

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• m4/gethrxtime.m4

• # gethrxtime.m4 serial 15
  dnl Copyright (C) 2005-2006, 2008-2023 Free Software Foundation, Inc.
  dnl This file is free software; the Free Software Foundation
  dnl gives unlimited permission to copy and/or distribute it,
  dnl with or without modifications, as long as this notice is preserved.
  
  dnl Written by Paul Eggert.
  
  AC_DEFUN([gl_GETHRXTIME],
  [
    AC_REQUIRE([gl_ARITHMETIC_HRTIME_T])
    AC_REQUIRE([gl_USE_SYSTEM_EXTENSIONS])
    AC_REQUIRE([gl_XTIME])
    AC_CHECK_DECLS([gethrtime], [], [], [[#include <time.h>]])
    GETHRXTIME_LIB=
    if test $ac_cv_have_decl_gethrtime = no \
       || test $gl_cv_arithmetic_hrtime_t = no; then
      dnl Find libraries needed to link lib/gethrxtime.c.
      AC_REQUIRE([gl_CLOCK_TIME])
      AC_REQUIRE([gl_USE_SYSTEM_EXTENSIONS])
      AC_CHECK_FUNCS_ONCE([microuptime nanouptime])
      if test $ac_cv_func_nanouptime != yes \
         && { test $ac_cv_have_decl_gethrtime = no \
              || test $gl_cv_arithmetic_hrtime_t = no; }; then
        AC_CACHE_CHECK([whether CLOCK_MONOTONIC or CLOCK_REALTIME is defined],
          [gl_cv_have_clock_gettime_macro],
          [AC_EGREP_CPP([have_clock_gettime_macro],
            [
  #          include <time.h>
  #          if defined CLOCK_MONOTONIC || defined CLOCK_REALTIME
              have_clock_gettime_macro
  #          endif
            ],
            [gl_cv_have_clock_gettime_macro=yes],
            [gl_cv_have_clock_gettime_macro=no])])
        if test $gl_cv_have_clock_gettime_macro = yes; then
          GETHRXTIME_LIB=$CLOCK_TIME_LIB
        fi
      fi
    fi
    AC_SUBST([GETHRXTIME_LIB])
    dnl For backward compatibility.
    LIB_GETHRXTIME="$GETHRXTIME_LIB"
    AC_SUBST([LIB_GETHRXTIME])
  ])
  
  # Test whether hrtime_t is an arithmetic type.
  # It is not arithmetic in older Solaris c89 (which insists on
  # not having a long long int type).
  AC_DEFUN([gl_ARITHMETIC_HRTIME_T],
  [
    AC_REQUIRE([gl_USE_SYSTEM_EXTENSIONS])
    AC_CACHE_CHECK([for arithmetic hrtime_t], [gl_cv_arithmetic_hrtime_t],
      [AC_COMPILE_IFELSE(
         [AC_LANG_PROGRAM([[#include <time.h>]],
            [[hrtime_t x = 0; return x/x;]])],
         [gl_cv_arithmetic_hrtime_t=yes],
         [gl_cv_arithmetic_hrtime_t=no])])
    if test $gl_cv_arithmetic_hrtime_t = yes; then
      AC_DEFINE([HAVE_ARITHMETIC_HRTIME_T], [1],
        [Define if you have an arithmetic hrtime_t type.])
    fi
  ])
  
  # Prerequisites of lib/xtime.h.
  AC_DEFUN([gl_XTIME],
  [
    :
  ])
  

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