Bash-4.3 distribution sources and documentation

m4/stat-time.m4

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+# Checks for stat-related time functions.
+
+# Copyright (C) 1998-1999, 2001, 2003, 2005-2007, 2009-2012 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 Paul Eggert.
+dnl Modified by Chet Ramey for bash.
+
+# st_atim.tv_nsec - Linux, Solaris, Cygwin
+# st_atimespec.tv_nsec - FreeBSD, NetBSD, if ! defined _POSIX_SOURCE
+# st_atimensec - FreeBSD, NetBSD, if defined _POSIX_SOURCE
+# st_atim.st__tim.tv_nsec - UnixWare (at least 2.1.2 through 7.1)
+
+# st_birthtimespec - FreeBSD, NetBSD (hidden on OpenBSD 3.9, anyway)
+# st_birthtim - Cygwin 1.7.0+
+
+AC_DEFUN([BASH_STAT_TIME],
+[
+  AC_REQUIRE([AC_C_INLINE])
+  AC_CHECK_HEADERS_ONCE([sys/time.h])
+
+  AC_CHECK_MEMBERS([struct stat.st_atim.tv_nsec],
+    [AC_CACHE_CHECK([whether struct stat.st_atim is of type struct timespec],
+       [ac_cv_typeof_struct_stat_st_atim_is_struct_timespec],
+       [AC_COMPILE_IFELSE([AC_LANG_PROGRAM(
+          [[
+            #include <sys/types.h>
+            #include <sys/stat.h>
+            #if HAVE_SYS_TIME_H
+            # include <sys/time.h>
+            #endif
+            #include <time.h>
+            struct timespec ts;
+            struct stat st;
+          ]],
+          [[
+            st.st_atim = ts;
+          ]])],
+          [ac_cv_typeof_struct_stat_st_atim_is_struct_timespec=yes],
+          [ac_cv_typeof_struct_stat_st_atim_is_struct_timespec=no])])
+     if test $ac_cv_typeof_struct_stat_st_atim_is_struct_timespec = yes; then
+       AC_DEFINE([TYPEOF_STRUCT_STAT_ST_ATIM_IS_STRUCT_TIMESPEC], [1],
+         [Define to 1 if the type of the st_atim member of a struct stat is
+          struct timespec.])
+     fi],
+    [AC_CHECK_MEMBERS([struct stat.st_atimespec.tv_nsec], [],
+       [AC_CHECK_MEMBERS([struct stat.st_atimensec], [],
+          [AC_CHECK_MEMBERS([struct stat.st_atim.st__tim.tv_nsec], [], [],
+             [#include <sys/types.h>
+              #include <sys/stat.h>])],
+          [#include <sys/types.h>
+           #include <sys/stat.h>])],
+       [#include <sys/types.h>
+        #include <sys/stat.h>])],
+    [#include <sys/types.h>
+     #include <sys/stat.h>])
+])

m4/timespec.m4

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+# Configure checks for struct timespec
+
+# Copyright (C) 2000-2001, 2003-2007, 2009-2011, 2012 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.
+
+# Original written by Paul Eggert and Jim Meyering.
+# Modified by Chet Ramey for bash
+
+dnl Define HAVE_STRUCT_TIMESPEC if `struct timespec' is declared
+dnl in time.h, sys/time.h, or pthread.h.
+
+AC_DEFUN([BASH_CHECK_TYPE_STRUCT_TIMESPEC],
+[
+  AC_CHECK_HEADERS_ONCE([sys/time.h])
+  AC_CACHE_CHECK([for struct timespec in <time.h>],
+    [bash_cv_sys_struct_timespec_in_time_h],
+    [AC_COMPILE_IFELSE(
+       [AC_LANG_PROGRAM(
+          [[#include <time.h>
+          ]],
+          [[static struct timespec x; x.tv_sec = x.tv_nsec;]])],
+       [bash_cv_sys_struct_timespec_in_time_h=yes],
+       [bash_cv_sys_struct_timespec_in_time_h=no])])
+
+  HAVE_STRUCT_TIMESPEC=0
+  TIME_H_DEFINES_STRUCT_TIMESPEC=0
+  SYS_TIME_H_DEFINES_STRUCT_TIMESPEC=0
+  PTHREAD_H_DEFINES_STRUCT_TIMESPEC=0
+  if test $bash_cv_sys_struct_timespec_in_time_h = yes; then
+    AC_DEFINE([HAVE_STRUCT_TIMESPEC])
+    AC_DEFINE([TIME_H_DEFINES_STRUCT_TIMESPEC])
+    TIME_H_DEFINES_STRUCT_TIMESPEC=1
+  else
+    AC_CACHE_CHECK([for struct timespec in <sys/time.h>],
+      [bash_cv_sys_struct_timespec_in_sys_time_h],
+      [AC_COMPILE_IFELSE(
+         [AC_LANG_PROGRAM(
+            [[#include <sys/time.h>
+            ]],
+            [[static struct timespec x; x.tv_sec = x.tv_nsec;]])],
+         [bash_cv_sys_struct_timespec_in_sys_time_h=yes],
+         [bash_cv_sys_struct_timespec_in_sys_time_h=no])])
+    if test $bash_cv_sys_struct_timespec_in_sys_time_h = yes; then
+      SYS_TIME_H_DEFINES_STRUCT_TIMESPEC=1
+      AC_DEFINE([HAVE_STRUCT_TIMESPEC])
+      AC_DEFINE([SYS_TIME_H_DEFINES_STRUCT_TIMESPEC])
+    else
+      AC_CACHE_CHECK([for struct timespec in <pthread.h>],
+        [bash_cv_sys_struct_timespec_in_pthread_h],
+        [AC_COMPILE_IFELSE(
+           [AC_LANG_PROGRAM(
+              [[#include <pthread.h>
+              ]],
+              [[static struct timespec x; x.tv_sec = x.tv_nsec;]])],
+           [bash_cv_sys_struct_timespec_in_pthread_h=yes],
+           [bash_cv_sys_struct_timespec_in_pthread_h=no])])
+      if test $bash_cv_sys_struct_timespec_in_pthread_h = yes; then
+        PTHREAD_H_DEFINES_STRUCT_TIMESPEC=1
+	AC_DEFINE([HAVE_STRUCT_TIMESPEC])
+	AC_DEFINE([PTHREAD_H_DEFINES_STRUCT_TIMESPEC])
+      fi
+    fi
+  fi
+  AC_SUBST([TIME_H_DEFINES_STRUCT_TIMESPEC])
+  AC_SUBST([SYS_TIME_H_DEFINES_STRUCT_TIMESPEC])
+  AC_SUBST([PTHREAD_H_DEFINES_STRUCT_TIMESPEC])
+
+])