>From d9fd725e4a01f13e440a152552e7b8ecc2f4e8cd Mon Sep 17 00:00:00 2001
From: Paul Eggert <address@hidden>
Date: Thu, 15 Jan 2015 17:37:14 -0800
Subject: [PATCH] time: port to MinGW32 3.21

Problem reported by Eli Zaretskii in:
http://lists.gnu.org/archive/html/bug-gnulib/2015-01/msg00042.html
* lib/time.in.h:
* m4/time_h.m4 (gl_CHECK_TYPE_STRUCT_TIMESPEC):
* modules/time (Depends-on):
Fall back on unistd.h if the other include files don't define
struct timespec.
---
 ChangeLog     |  9 +++++++++
 lib/time.in.h |  2 ++
 m4/time_h.m4  | 19 +++++++++++++++++--
 modules/time  |  1 +
 4 files changed, 29 insertions(+), 2 deletions(-)

diff --git a/ChangeLog b/ChangeLog
index d1e878a..3a7ee14 100644
--- a/ChangeLog
+++ b/ChangeLog
@@ -1,5 +1,14 @@
 2015-01-15  Paul Eggert  <address@hidden>
 
+	time: port to MinGW32 3.21
+	Problem reported by Eli Zaretskii in:
+	http://lists.gnu.org/archive/html/bug-gnulib/2015-01/msg00042.html
+	* lib/time.in.h:
+	* m4/time_h.m4 (gl_CHECK_TYPE_STRUCT_TIMESPEC):
+	* modules/time (Depends-on):
+	Fall back on unistd.h if the other include files don't define
+	struct timespec.
+
 	update-copyright: apply to self
 	* build-aux/update-copyright: Fix copyright date.  How ironic!
 
diff --git a/lib/time.in.h b/lib/time.in.h
index 74bc154..c374aeb 100644
--- a/lib/time.in.h
+++ b/lib/time.in.h
@@ -55,6 +55,8 @@
 #   include <sys/time.h>
 #  elif @PTHREAD_H_DEFINES_STRUCT_TIMESPEC@
 #   include <pthread.h>
+#  elif @UNISTD_H_DEFINES_STRUCT_TIMESPEC@
+#   include <unistd.h>
 #  else
 
 #   ifdef __cplusplus
diff --git a/m4/time_h.m4 b/m4/time_h.m4
index 0f0b7d9..d9c41a4 100644
--- a/m4/time_h.m4
+++ b/m4/time_h.m4
@@ -2,7 +2,7 @@
 
 # Copyright (C) 2000-2001, 2003-2007, 2009-2015 Free Software Foundation, Inc.
 
-# serial 8
+# serial 9
 
 # This file is free software; the Free Software Foundation
 # gives unlimited permission to copy and/or distribute it,
@@ -26,7 +26,7 @@ AC_DEFUN([gl_HEADER_TIME_H_BODY],
 ])
 
 dnl Check whether 'struct timespec' is declared
-dnl in time.h, sys/time.h, or pthread.h.
+dnl in time.h, sys/time.h, pthread.h, or unistd.h.
 
 AC_DEFUN([gl_CHECK_TYPE_STRUCT_TIMESPEC],
 [
@@ -44,6 +44,7 @@ AC_DEFUN([gl_CHECK_TYPE_STRUCT_TIMESPEC],
   TIME_H_DEFINES_STRUCT_TIMESPEC=0
   SYS_TIME_H_DEFINES_STRUCT_TIMESPEC=0
   PTHREAD_H_DEFINES_STRUCT_TIMESPEC=0
+  UNISTD_H_DEFINES_STRUCT_TIMESPEC=0
   if test $gl_cv_sys_struct_timespec_in_time_h = yes; then
     TIME_H_DEFINES_STRUCT_TIMESPEC=1
   else
@@ -70,12 +71,26 @@ AC_DEFUN([gl_CHECK_TYPE_STRUCT_TIMESPEC],
            [gl_cv_sys_struct_timespec_in_pthread_h=no])])
       if test $gl_cv_sys_struct_timespec_in_pthread_h = yes; then
         PTHREAD_H_DEFINES_STRUCT_TIMESPEC=1
+      else
+        AC_CACHE_CHECK([for struct timespec in <unistd.h>],
+          [gl_cv_sys_struct_timespec_in_unistd_h],
+          [AC_COMPILE_IFELSE(
+             [AC_LANG_PROGRAM(
+                [[#include <unistd.h>
+                ]],
+                [[static struct timespec x; x.tv_sec = x.tv_nsec;]])],
+             [gl_cv_sys_struct_timespec_in_unistd_h=yes],
+             [gl_cv_sys_struct_timespec_in_unistd_h=no])])
+        if test $gl_cv_sys_struct_timespec_in_unistd_h = yes; then
+          UNISTD_H_DEFINES_STRUCT_TIMESPEC=1
+        fi
       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])
+  AC_SUBST([UNISTD_H_DEFINES_STRUCT_TIMESPEC])
 ])
 
 AC_DEFUN([gl_TIME_MODULE_INDICATOR],
diff --git a/modules/time b/modules/time
index fd3c05d..55edc25 100644
--- a/modules/time
+++ b/modules/time
@@ -49,6 +49,7 @@ time.h: time.in.h $(top_builddir)/config.status $(CXXDEFS_H) $(ARG_NONNULL_H) $(
 	      -e 's|@''PTHREAD_H_DEFINES_STRUCT_TIMESPEC''@|$(PTHREAD_H_DEFINES_STRUCT_TIMESPEC)|g' \
 	      -e 's|@''SYS_TIME_H_DEFINES_STRUCT_TIMESPEC''@|$(SYS_TIME_H_DEFINES_STRUCT_TIMESPEC)|g' \
 	      -e 's|@''TIME_H_DEFINES_STRUCT_TIMESPEC''@|$(TIME_H_DEFINES_STRUCT_TIMESPEC)|g' \
+	      -e 's|@''UNISTD_H_DEFINES_STRUCT_TIMESPEC''@|$(UNISTD_H_DEFINES_STRUCT_TIMESPEC)|g' \
 	      -e '/definitions of _GL_FUNCDECL_RPL/r $(CXXDEFS_H)' \
 	      -e '/definition of _GL_ARG_NONNULL/r $(ARG_NONNULL_H)' \
 	      -e '/definition of _GL_WARN_ON_USE/r $(WARN_ON_USE_H)' \
-- 
2.1.0