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author | Lorry Tar Creator <lorry-tar-importer@lorry> | 2016-01-20 10:55:18 +0000 |
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committer | Lorry Tar Creator <lorry-tar-importer@lorry> | 2016-01-20 10:55:18 +0000 |
commit | 70e9163c9c18e995515598085cb824e554eb7ae7 (patch) | |
tree | a42dc8b2a6c031354bf31472de888bfc8a060132 /m4/gethrxtime.m4 | |
parent | cbf5993c43f49281173f185863577d86bfac6eae (diff) | |
download | coreutils-tarball-70e9163c9c18e995515598085cb824e554eb7ae7.tar.gz |
coreutils-8.25HEADcoreutils-8.25master
Diffstat (limited to 'm4/gethrxtime.m4')
-rw-r--r-- | m4/gethrxtime.m4 | 75 |
1 files changed, 34 insertions, 41 deletions
diff --git a/m4/gethrxtime.m4 b/m4/gethrxtime.m4 index b596fec..2343083 100644 --- a/m4/gethrxtime.m4 +++ b/m4/gethrxtime.m4 @@ -1,5 +1,5 @@ -# gethrxtime.m4 serial 6 -dnl Copyright (C) 2005, 2006 Free Software Foundation, Inc. +# gethrxtime.m4 serial 12 +dnl Copyright (C) 2005-2006, 2008-2016 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. @@ -11,13 +11,34 @@ 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>]) - case $ac_cv_have_decl_gethrtime,$gl_cv_arithmetic_hrtime_t in - yes,yes) ;; - *) - AC_LIBOBJ([gethrxtime]) - gl_PREREQ_GETHRXTIME;; - esac + 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. @@ -26,14 +47,14 @@ AC_DEFUN([gl_GETHRXTIME], 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 ]) @@ -41,34 +62,6 @@ AC_DEFUN([gl_ARITHMETIC_HRTIME_T], # Prerequisites of lib/xtime.h. AC_DEFUN([gl_XTIME], [ - AC_REQUIRE([AC_C_INLINE]) AC_REQUIRE([AC_TYPE_LONG_LONG_INT]) : ]) - -# Prerequisites of lib/gethrxtime.c. -AC_DEFUN([gl_PREREQ_GETHRXTIME], -[ - AC_REQUIRE([gl_CLOCK_TIME]) - AC_REQUIRE([gl_USE_SYSTEM_EXTENSIONS]) - AC_CHECK_FUNCS_ONCE(microuptime nanouptime) - - if test $ac_cv_func_nanouptime != yes; then - LIB_GETHRXTIME= - 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 - AC_SUBST([LIB_GETHRXTIME]) - fi -]) |