diff options
Diffstat (limited to 'gl/m4/gettimeofday.m4')
| -rw-r--r-- | gl/m4/gettimeofday.m4 | 138 |
1 files changed, 0 insertions, 138 deletions
diff --git a/gl/m4/gettimeofday.m4 b/gl/m4/gettimeofday.m4 deleted file mode 100644 index 4f501e5..0000000 --- a/gl/m4/gettimeofday.m4 +++ /dev/null @@ -1,138 +0,0 @@ -# serial 21 - -# Copyright (C) 2001-2003, 2005, 2007, 2009-2017 Free Software Foundation, Inc. -# This file is free software; the Free Software Foundation -# gives unlimited permission to copy and/or distribute it, -# with or without modifications, as long as this notice is preserved. - -dnl From Jim Meyering. - -AC_DEFUN([gl_FUNC_GETTIMEOFDAY], -[ - AC_REQUIRE([AC_C_RESTRICT]) - AC_REQUIRE([gl_HEADER_SYS_TIME_H]) - AC_REQUIRE([gl_HEADER_SYS_TIME_H_DEFAULTS]) - AC_CHECK_FUNCS_ONCE([gettimeofday]) - - gl_gettimeofday_timezone=void - if test $ac_cv_func_gettimeofday != yes; then - HAVE_GETTIMEOFDAY=0 - else - gl_FUNC_GETTIMEOFDAY_CLOBBER - AC_CACHE_CHECK([for gettimeofday with POSIX signature], - [gl_cv_func_gettimeofday_posix_signature], - [AC_COMPILE_IFELSE( - [AC_LANG_PROGRAM( - [[#include <sys/time.h> - struct timeval c; - int gettimeofday (struct timeval *restrict, void *restrict); - ]], - [[/* glibc uses struct timezone * rather than the POSIX void * - if _GNU_SOURCE is defined. However, since the only portable - use of gettimeofday uses NULL as the second parameter, and - since the glibc definition is actually more typesafe, it is - not worth wrapping this to get a compliant signature. */ - int (*f) (struct timeval *restrict, void *restrict) - = gettimeofday; - int x = f (&c, 0); - return !(x | c.tv_sec | c.tv_usec); - ]])], - [gl_cv_func_gettimeofday_posix_signature=yes], - [AC_COMPILE_IFELSE( - [AC_LANG_PROGRAM( - [[#include <sys/time.h> -int gettimeofday (struct timeval *restrict, struct timezone *restrict); - ]])], - [gl_cv_func_gettimeofday_posix_signature=almost], - [gl_cv_func_gettimeofday_posix_signature=no])])]) - if test $gl_cv_func_gettimeofday_posix_signature = almost; then - gl_gettimeofday_timezone='struct timezone' - elif test $gl_cv_func_gettimeofday_posix_signature != yes; then - REPLACE_GETTIMEOFDAY=1 - fi - dnl If we override 'struct timeval', we also have to override gettimeofday. - if test $REPLACE_STRUCT_TIMEVAL = 1; then - REPLACE_GETTIMEOFDAY=1 - fi - m4_ifdef([gl_FUNC_TZSET_CLOBBER], [ - gl_FUNC_TZSET_CLOBBER - case "$gl_cv_func_tzset_clobber" in - *yes) - REPLACE_GETTIMEOFDAY=1 - gl_GETTIMEOFDAY_REPLACE_LOCALTIME - AC_DEFINE([tzset], [rpl_tzset], - [Define to rpl_tzset if the wrapper function should be used.]) - AC_DEFINE([TZSET_CLOBBERS_LOCALTIME], [1], - [Define if tzset clobbers localtime's static buffer.]) - ;; - esac - ]) - fi - AC_DEFINE_UNQUOTED([GETTIMEOFDAY_TIMEZONE], [$gl_gettimeofday_timezone], - [Define this to 'void' or 'struct timezone' to match the system's - declaration of the second argument to gettimeofday.]) -]) - - -dnl See if gettimeofday clobbers the static buffer that localtime uses -dnl for its return value. The gettimeofday function from Mac OS X 10.0.4 -dnl (i.e., Darwin 1.3.7) has this problem. -dnl -dnl If it does, then arrange to use gettimeofday and localtime only via -dnl the wrapper functions that work around the problem. - -AC_DEFUN([gl_FUNC_GETTIMEOFDAY_CLOBBER], -[ - AC_REQUIRE([gl_HEADER_SYS_TIME_H]) - AC_REQUIRE([AC_CANONICAL_HOST]) dnl for cross-compiles - - AC_CACHE_CHECK([whether gettimeofday clobbers localtime buffer], - [gl_cv_func_gettimeofday_clobber], - [AC_RUN_IFELSE( - [AC_LANG_PROGRAM( - [[#include <string.h> - #include <sys/time.h> - #include <time.h> - #include <stdlib.h> - ]], - [[ - time_t t = 0; - struct tm *lt; - struct tm saved_lt; - struct timeval tv; - lt = localtime (&t); - saved_lt = *lt; - gettimeofday (&tv, NULL); - return memcmp (lt, &saved_lt, sizeof (struct tm)) != 0; - ]])], - [gl_cv_func_gettimeofday_clobber=no], - [gl_cv_func_gettimeofday_clobber=yes], - [# When cross-compiling: - case "$host_os" in - # Guess all is fine on glibc systems. - *-gnu*) gl_cv_func_gettimeofday_clobber="guessing no" ;; - # If we don't know, assume the worst. - *) gl_cv_func_gettimeofday_clobber="guessing yes" ;; - esac - ])]) - - case "$gl_cv_func_gettimeofday_clobber" in - *yes) - REPLACE_GETTIMEOFDAY=1 - gl_GETTIMEOFDAY_REPLACE_LOCALTIME - AC_DEFINE([GETTIMEOFDAY_CLOBBERS_LOCALTIME], [1], - [Define if gettimeofday clobbers the localtime buffer.]) - ;; - esac -]) - -AC_DEFUN([gl_GETTIMEOFDAY_REPLACE_LOCALTIME], [ - REPLACE_GMTIME=1 - REPLACE_LOCALTIME=1 -]) - -# Prerequisites of lib/gettimeofday.c. -AC_DEFUN([gl_PREREQ_GETTIMEOFDAY], [ - AC_CHECK_HEADERS([sys/timeb.h]) - AC_CHECK_FUNCS([_ftime]) -]) |