diff options
Diffstat (limited to 'gnulib/m4/gethrxtime.m4')
m--------- | gnulib | 0 | ||||
-rw-r--r-- | gnulib/m4/gethrxtime.m4 | 73 |
2 files changed, 73 insertions, 0 deletions
diff --git a/gnulib b/gnulib deleted file mode 160000 -Subproject 443bc5ffcf7429e557f4a371b0661abe98ddbc1 diff --git a/gnulib/m4/gethrxtime.m4 b/gnulib/m4/gethrxtime.m4 new file mode 100644 index 0000000..4d1530a --- /dev/null +++ b/gnulib/m4/gethrxtime.m4 @@ -0,0 +1,73 @@ +# gethrxtime.m4 serial 11 +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. + +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([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. +# 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_C_INLINE]) + AC_REQUIRE([AC_TYPE_LONG_LONG_INT]) + : +]) + +# Prerequisites of lib/gethrxtime.c. +AC_DEFUN([gl_PREREQ_GETHRXTIME], +[ + AC_CHECK_FUNCS_ONCE([microuptime]) + : +]) |