Revert "Update gnulib to current upstream master"

[external/binutils.git] / gdb / gnulib / import / m4 / gettimeofday.m4

diff --git a/gdb/gnulib/import/m4/gettimeofday.m4 b/gdb/gnulib/import/m4/gettimeofday.m4
index 198695e..4ae5d63 100644 (file)
--- a/gdb/gnulib/import/m4/gettimeofday.m4
+++ b/gdb/gnulib/import/m4/gettimeofday.m4
@@ -1,6 +1,6 @@
-# serial 25
+# serial 21
 
-# Copyright (C) 2001-2003, 2005, 2007, 2009-2018 Free Software Foundation, Inc.
+# Copyright (C) 2001-2003, 2005, 2007, 2009-2016 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.
@@ -9,10 +9,9 @@ dnl From Jim Meyering.
 
 AC_DEFUN([gl_FUNC_GETTIMEOFDAY],
 [
-  AC_REQUIRE([gl_HEADER_SYS_TIME_H_DEFAULTS])
   AC_REQUIRE([AC_C_RESTRICT])
-  AC_REQUIRE([AC_CANONICAL_HOST])
   AC_REQUIRE([gl_HEADER_SYS_TIME_H])
+  AC_REQUIRE([gl_HEADER_SYS_TIME_H_DEFAULTS])
   AC_CHECK_FUNCS_ONCE([gettimeofday])
 
   gl_gettimeofday_timezone=void
@@ -55,11 +54,19 @@ int gettimeofday (struct timeval *restrict, struct timezone *restrict);
     if test $REPLACE_STRUCT_TIMEVAL = 1; then
       REPLACE_GETTIMEOFDAY=1
     fi
-    dnl On mingw, the original gettimeofday has only a precision of 15.6
-    dnl milliseconds. So override it.
-    case "$host_os" in
-      mingw*) REPLACE_GETTIMEOFDAY=1 ;;
-    esac
+    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
@@ -78,7 +85,6 @@ AC_DEFUN([gl_FUNC_GETTIMEOFDAY_CLOBBER],
 [
  AC_REQUIRE([gl_HEADER_SYS_TIME_H])
  AC_REQUIRE([AC_CANONICAL_HOST]) dnl for cross-compiles
- AC_REQUIRE([gl_LOCALTIME_BUFFER_DEFAULTS])
 
  AC_CACHE_CHECK([whether gettimeofday clobbers localtime buffer],
   [gl_cv_func_gettimeofday_clobber],
@@ -103,24 +109,30 @@ AC_DEFUN([gl_FUNC_GETTIMEOFDAY_CLOBBER],
      [gl_cv_func_gettimeofday_clobber=yes],
      [# When cross-compiling:
       case "$host_os" in
-                       # Guess all is fine on glibc systems.
-        *-gnu* | gnu*) gl_cv_func_gettimeofday_clobber="guessing no" ;;
-                       # Guess no on native Windows.
-        mingw*)        gl_cv_func_gettimeofday_clobber="guessing no" ;;
-                       # If we don't know, assume the worst.
-        *)             gl_cv_func_gettimeofday_clobber="guessing yes" ;;
+                # 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.])
-     gl_LOCALTIME_BUFFER_NEEDED
      ;;
  esac
 ])
 
+AC_DEFUN([gl_GETTIMEOFDAY_REPLACE_LOCALTIME], [
+  REPLACE_GMTIME=1
+  REPLACE_LOCALTIME=1
+])
+
 # Prerequisites of lib/gettimeofday.c.
-AC_DEFUN([gl_PREREQ_GETTIMEOFDAY], [:])
+AC_DEFUN([gl_PREREQ_GETTIMEOFDAY], [
+  AC_CHECK_HEADERS([sys/timeb.h])
+  AC_CHECK_FUNCS([_ftime])
+])