Mercurial > gnulib
view m4/gethrxtime.m4 @ 40153:878ddb87671b
mountlist: Merge two .m4 files.
* m4/mountlist.m4 (gl_MOUNTLIST): Inline gl_LIST_MOUNTED_FILE_SYSTEMS.
(AC_FUNC_GETMNTENT): Move to here, from m4/ls-mntd-fs.m4.
* m4/ls-mntd-fs.m4: Remove file.
* modules/mountlist (Files): Remove m4/ls-mntd-fs.m4.
author | Bruno Haible <bruno@clisp.org> |
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date | Sun, 27 Jan 2019 11:45:28 +0100 |
parents | b06060465f09 |
children |
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# gethrxtime.m4 serial 12 dnl Copyright (C) 2005-2006, 2008-2019 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>]]) 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([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 $gl_cv_have_clock_gettime_macro = yes; then LIB_GETHRXTIME=$LIB_CLOCK_GETTIME fi fi fi 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], [ AC_REQUIRE([AC_TYPE_LONG_LONG_INT]) : ])