-# gethrxtime.m4 serial 2
-dnl Copyright (C) 2005 Free Software Foundation, Inc.
+# gethrxtime.m4 serial 10
+dnl Copyright (C) 2005-2006, 2008-2011 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.
AC_DEFUN([gl_GETHRXTIME],
[
- AC_LIBSOURCES([gethrxtime.c, gethrxtime.h, xtime.h])
AC_REQUIRE([gl_ARITHMETIC_HRTIME_T])
AC_REQUIRE([gl_USE_SYSTEM_EXTENSIONS])
AC_REQUIRE([gl_XTIME])
AC_CHECK_DECLS([gethrtime], [], [], [#include <time.h>])
- case $ac_cv_have_decl_gethrtime,$gl_cv_arithmetic_hrtime_t in
- yes,yes) ;;
- *)
- AC_LIBOBJ([gethrxtime])
- gl_PREREQ_GETHRXTIME;;
- esac
+ LIB_GETHRXTIME=
+ 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([nanouptime])
+ if test $ac_cv_func_nanouptime != yes; 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 $gl_cv_have_clock_gettime_macro = yes; then
+ LIB_GETHRXTIME=$LIB_CLOCK_GETTIME
+ fi
+ fi
+ fi
+ AC_SUBST([LIB_GETHRXTIME])
])
# Test whether hrtime_t is an arithmetic 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_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;])],
+ [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,
+ AC_DEFINE([HAVE_ARITHMETIC_HRTIME_T], [1],
[Define if you have an arithmetic hrtime_t type.])
fi
])
AC_DEFUN([gl_XTIME],
[
AC_REQUIRE([AC_C_INLINE])
- AC_REQUIRE([gl_AC_TYPE_LONG_LONG])
+ AC_REQUIRE([AC_TYPE_LONG_LONG_INT])
:
])
# Prerequisites of lib/gethrxtime.c.
AC_DEFUN([gl_PREREQ_GETHRXTIME],
[
- AC_REQUIRE([AC_HEADER_TIME])
- AC_REQUIRE([gl_CLOCK_TIME])
- AC_REQUIRE([gl_USE_SYSTEM_EXTENSIONS])
- AC_CHECK_FUNCS_ONCE(gettimeofday microuptime nanouptime)
-
- if test $ac_cv_func_nanouptime != yes; then
- LIB_GETHRXTIME=
- AC_CACHE_CHECK([whether CLOCK_MONOTONIC is defined],
- gl_cv_have_CLOCK_MONOTONIC,
- [AC_EGREP_CPP([have_CLOCK_MONOTONIC],
- [
-# include <time.h>
-# ifdef CLOCK_MONOTONIC
- have_CLOCK_MONOTONIC
-# endif
- ],
- gl_cv_have_CLOCK_MONOTONIC=yes,
- gl_cv_have_CLOCK_MONOTONIC=no)])
- if test $gl_cv_have_CLOCK_MONOTONIC = yes; then
- LIB_GETHRXTIME=$LIB_CLOCK_GETTIME
- fi
- AC_SUBST([LIB_GETHRXTIME])
- fi
+ AC_CHECK_FUNCS_ONCE([microuptime])
+ :
])