Merge branch 'stable'

[gnulib.git] / m4 / unistd_h.m4

diff --git a/m4/unistd_h.m4 b/m4/unistd_h.m4
index 5e4515f..b4eca68 100644 (file)
--- a/m4/unistd_h.m4
+++ b/m4/unistd_h.m4
@@ -1,5 +1,5 @@
-# unistd_h.m4 serial 44
-dnl Copyright (C) 2006-2010 Free Software Foundation, Inc.
+# unistd_h.m4 serial 62
+dnl Copyright (C) 2006-2011 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 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.


@@ -14,8 +14,6 @@ AC_DEFUN([gl_UNISTD_H],
   AC_REQUIRE([AC_C_INLINE])
 
   gl_CHECK_NEXT_HEADERS([unistd.h])
   AC_REQUIRE([AC_C_INLINE])
 
   gl_CHECK_NEXT_HEADERS([unistd.h])

-
-  AC_CHECK_HEADERS_ONCE([unistd.h])

   if test $ac_cv_header_unistd_h = yes; then
     HAVE_UNISTD_H=1
   else
   if test $ac_cv_header_unistd_h = yes; then
     HAVE_UNISTD_H=1
   else


@@ -23,11 +21,17 @@ AC_DEFUN([gl_UNISTD_H],
   fi
   AC_SUBST([HAVE_UNISTD_H])
 
   fi
   AC_SUBST([HAVE_UNISTD_H])
 

+  dnl Ensure the type pid_t gets defined.
+  AC_REQUIRE([AC_TYPE_PID_T])
+

   dnl Check for declarations of anything we want to poison if the
   dnl corresponding gnulib module is not in use.
   dnl Check for declarations of anything we want to poison if the
   dnl corresponding gnulib module is not in use.

-  gl_WARN_ON_USE_PREPARE([[#include <unistd.h>
+  gl_WARN_ON_USE_PREPARE([[
+#if HAVE_UNISTD_H
+# include <unistd.h>
+#endif

 /* Some systems declare various items in the wrong headers.  */
 /* Some systems declare various items in the wrong headers.  */

-#ifndef __GLIBC__
+#if !(defined __GLIBC__ && !defined __UCLIBC__)

 # include <fcntl.h>
 # include <stdio.h>
 # include <stdlib.h>
 # include <fcntl.h>
 # include <stdio.h>
 # include <stdlib.h>


@@ -35,11 +39,12 @@ AC_DEFUN([gl_UNISTD_H],
 #  include <io.h>
 # endif
 #endif
 #  include <io.h>
 # endif
 #endif

-    ]], [chown dup2 dup3 environ euidaccess faccessat fchdir fchownat
-    fsync ftruncate getcwd getdomainname getdtablesize getgroups
+    ]], [chdir chown dup dup2 dup3 environ euidaccess faccessat fchdir fchownat
+    fdatasync fsync ftruncate getcwd getdomainname getdtablesize getgroups

     gethostname getlogin getlogin_r getpagesize getusershell setusershell
     gethostname getlogin getlogin_r getpagesize getusershell setusershell

-    endusershell lchown link linkat lseek pipe2 pread readlink readlinkat
-    rmdir sleep symlink symlinkat ttyname_r unlink unlinkat usleep])
+    endusershell group_member lchown link linkat lseek pipe pipe2 pread pwrite
+    readlink readlinkat rmdir sleep symlink symlinkat ttyname_r unlink unlinkat
+    usleep])

 ])
 
 AC_DEFUN([gl_UNISTD_MODULE_INDICATOR],
 ])
 
 AC_DEFUN([gl_UNISTD_MODULE_INDICATOR],


@@ -53,86 +58,101 @@ AC_DEFUN([gl_UNISTD_MODULE_INDICATOR],
 
 AC_DEFUN([gl_UNISTD_H_DEFAULTS],
 [
 
 AC_DEFUN([gl_UNISTD_H_DEFAULTS],
 [

-  GNULIB_CHOWN=0;            AC_SUBST([GNULIB_CHOWN])
-  GNULIB_CLOSE=0;            AC_SUBST([GNULIB_CLOSE])
-  GNULIB_DUP2=0;             AC_SUBST([GNULIB_DUP2])
-  GNULIB_DUP3=0;             AC_SUBST([GNULIB_DUP3])
-  GNULIB_ENVIRON=0;          AC_SUBST([GNULIB_ENVIRON])
-  GNULIB_EUIDACCESS=0;       AC_SUBST([GNULIB_EUIDACCESS])
-  GNULIB_FACCESSAT=0;        AC_SUBST([GNULIB_FACCESSAT])
-  GNULIB_FCHDIR=0;           AC_SUBST([GNULIB_FCHDIR])
-  GNULIB_FCHOWNAT=0;         AC_SUBST([GNULIB_FCHOWNAT])
-  GNULIB_FSYNC=0;            AC_SUBST([GNULIB_FSYNC])
-  GNULIB_FTRUNCATE=0;        AC_SUBST([GNULIB_FTRUNCATE])
-  GNULIB_GETCWD=0;           AC_SUBST([GNULIB_GETCWD])
-  GNULIB_GETDOMAINNAME=0;    AC_SUBST([GNULIB_GETDOMAINNAME])
-  GNULIB_GETDTABLESIZE=0;    AC_SUBST([GNULIB_GETDTABLESIZE])
-  GNULIB_GETGROUPS=0;        AC_SUBST([GNULIB_GETGROUPS])
-  GNULIB_GETHOSTNAME=0;      AC_SUBST([GNULIB_GETHOSTNAME])
-  GNULIB_GETLOGIN=0;         AC_SUBST([GNULIB_GETLOGIN])
-  GNULIB_GETLOGIN_R=0;       AC_SUBST([GNULIB_GETLOGIN_R])
-  GNULIB_GETPAGESIZE=0;      AC_SUBST([GNULIB_GETPAGESIZE])
-  GNULIB_GETUSERSHELL=0;     AC_SUBST([GNULIB_GETUSERSHELL])
-  GNULIB_LCHOWN=0;           AC_SUBST([GNULIB_LCHOWN])
-  GNULIB_LINK=0;             AC_SUBST([GNULIB_LINK])
-  GNULIB_LINKAT=0;           AC_SUBST([GNULIB_LINKAT])
-  GNULIB_LSEEK=0;            AC_SUBST([GNULIB_LSEEK])
-  GNULIB_PIPE2=0;            AC_SUBST([GNULIB_PIPE2])
-  GNULIB_PREAD=0;            AC_SUBST([GNULIB_PREAD])
-  GNULIB_READLINK=0;         AC_SUBST([GNULIB_READLINK])
-  GNULIB_READLINKAT=0;       AC_SUBST([GNULIB_READLINKAT])
-  GNULIB_RMDIR=0;            AC_SUBST([GNULIB_RMDIR])
-  GNULIB_SLEEP=0;            AC_SUBST([GNULIB_SLEEP])
-  GNULIB_SYMLINK=0;          AC_SUBST([GNULIB_SYMLINK])
-  GNULIB_SYMLINKAT=0;        AC_SUBST([GNULIB_SYMLINKAT])
-  GNULIB_TTYNAME_R=0;        AC_SUBST([GNULIB_TTYNAME_R])
-  GNULIB_UNISTD_H_GETOPT=0;  AC_SUBST([GNULIB_UNISTD_H_GETOPT])
-  GNULIB_UNISTD_H_SIGPIPE=0; AC_SUBST([GNULIB_UNISTD_H_SIGPIPE])
-  GNULIB_UNLINK=0;           AC_SUBST([GNULIB_UNLINK])
-  GNULIB_UNLINKAT=0;         AC_SUBST([GNULIB_UNLINKAT])
-  GNULIB_USLEEP=0;           AC_SUBST([GNULIB_USLEEP])
-  GNULIB_WRITE=0;            AC_SUBST([GNULIB_WRITE])
+  GNULIB_CHDIR=0;                AC_SUBST([GNULIB_CHDIR])
+  GNULIB_CHOWN=0;                AC_SUBST([GNULIB_CHOWN])
+  GNULIB_CLOSE=0;                AC_SUBST([GNULIB_CLOSE])
+  GNULIB_DUP=0;                  AC_SUBST([GNULIB_DUP])
+  GNULIB_DUP2=0;                 AC_SUBST([GNULIB_DUP2])
+  GNULIB_DUP3=0;                 AC_SUBST([GNULIB_DUP3])
+  GNULIB_ENVIRON=0;              AC_SUBST([GNULIB_ENVIRON])
+  GNULIB_EUIDACCESS=0;           AC_SUBST([GNULIB_EUIDACCESS])
+  GNULIB_FACCESSAT=0;            AC_SUBST([GNULIB_FACCESSAT])
+  GNULIB_FCHDIR=0;               AC_SUBST([GNULIB_FCHDIR])
+  GNULIB_FCHOWNAT=0;             AC_SUBST([GNULIB_FCHOWNAT])
+  GNULIB_FDATASYNC=0;            AC_SUBST([GNULIB_FDATASYNC])
+  GNULIB_FSYNC=0;                AC_SUBST([GNULIB_FSYNC])
+  GNULIB_FTRUNCATE=0;            AC_SUBST([GNULIB_FTRUNCATE])
+  GNULIB_GETCWD=0;               AC_SUBST([GNULIB_GETCWD])
+  GNULIB_GETDOMAINNAME=0;        AC_SUBST([GNULIB_GETDOMAINNAME])
+  GNULIB_GETDTABLESIZE=0;        AC_SUBST([GNULIB_GETDTABLESIZE])
+  GNULIB_GETGROUPS=0;            AC_SUBST([GNULIB_GETGROUPS])
+  GNULIB_GETHOSTNAME=0;          AC_SUBST([GNULIB_GETHOSTNAME])
+  GNULIB_GETLOGIN=0;             AC_SUBST([GNULIB_GETLOGIN])
+  GNULIB_GETLOGIN_R=0;           AC_SUBST([GNULIB_GETLOGIN_R])
+  GNULIB_GETPAGESIZE=0;          AC_SUBST([GNULIB_GETPAGESIZE])
+  GNULIB_GETUSERSHELL=0;         AC_SUBST([GNULIB_GETUSERSHELL])
+  GNULIB_GROUP_MEMBER=0;         AC_SUBST([GNULIB_GROUP_MEMBER])
+  GNULIB_LCHOWN=0;               AC_SUBST([GNULIB_LCHOWN])
+  GNULIB_LINK=0;                 AC_SUBST([GNULIB_LINK])
+  GNULIB_LINKAT=0;               AC_SUBST([GNULIB_LINKAT])
+  GNULIB_LSEEK=0;                AC_SUBST([GNULIB_LSEEK])
+  GNULIB_PIPE=0;                 AC_SUBST([GNULIB_PIPE])
+  GNULIB_PIPE2=0;                AC_SUBST([GNULIB_PIPE2])
+  GNULIB_PREAD=0;                AC_SUBST([GNULIB_PREAD])
+  GNULIB_PWRITE=0;               AC_SUBST([GNULIB_PWRITE])
+  GNULIB_READ=0;                 AC_SUBST([GNULIB_READ])
+  GNULIB_READLINK=0;             AC_SUBST([GNULIB_READLINK])
+  GNULIB_READLINKAT=0;           AC_SUBST([GNULIB_READLINKAT])
+  GNULIB_RMDIR=0;                AC_SUBST([GNULIB_RMDIR])
+  GNULIB_SLEEP=0;                AC_SUBST([GNULIB_SLEEP])
+  GNULIB_SYMLINK=0;              AC_SUBST([GNULIB_SYMLINK])
+  GNULIB_SYMLINKAT=0;            AC_SUBST([GNULIB_SYMLINKAT])
+  GNULIB_TTYNAME_R=0;            AC_SUBST([GNULIB_TTYNAME_R])
+  GNULIB_UNISTD_H_NONBLOCKING=0; AC_SUBST([GNULIB_UNISTD_H_NONBLOCKING])
+  GNULIB_UNISTD_H_SIGPIPE=0;     AC_SUBST([GNULIB_UNISTD_H_SIGPIPE])
+  GNULIB_UNLINK=0;               AC_SUBST([GNULIB_UNLINK])
+  GNULIB_UNLINKAT=0;             AC_SUBST([GNULIB_UNLINKAT])
+  GNULIB_USLEEP=0;               AC_SUBST([GNULIB_USLEEP])
+  GNULIB_WRITE=0;                AC_SUBST([GNULIB_WRITE])

   dnl Assume proper GNU behavior unless another module says otherwise.
   HAVE_CHOWN=1;           AC_SUBST([HAVE_CHOWN])
   HAVE_DUP2=1;            AC_SUBST([HAVE_DUP2])
   HAVE_DUP3=1;            AC_SUBST([HAVE_DUP3])
   HAVE_EUIDACCESS=1;      AC_SUBST([HAVE_EUIDACCESS])
   HAVE_FACCESSAT=1;       AC_SUBST([HAVE_FACCESSAT])
   dnl Assume proper GNU behavior unless another module says otherwise.
   HAVE_CHOWN=1;           AC_SUBST([HAVE_CHOWN])
   HAVE_DUP2=1;            AC_SUBST([HAVE_DUP2])
   HAVE_DUP3=1;            AC_SUBST([HAVE_DUP3])
   HAVE_EUIDACCESS=1;      AC_SUBST([HAVE_EUIDACCESS])
   HAVE_FACCESSAT=1;       AC_SUBST([HAVE_FACCESSAT])

+  HAVE_FCHDIR=1;          AC_SUBST([HAVE_FCHDIR])

   HAVE_FCHOWNAT=1;        AC_SUBST([HAVE_FCHOWNAT])
   HAVE_FCHOWNAT=1;        AC_SUBST([HAVE_FCHOWNAT])

+  HAVE_FDATASYNC=1;       AC_SUBST([HAVE_FDATASYNC])

   HAVE_FSYNC=1;           AC_SUBST([HAVE_FSYNC])
   HAVE_FTRUNCATE=1;       AC_SUBST([HAVE_FTRUNCATE])
   HAVE_FSYNC=1;           AC_SUBST([HAVE_FSYNC])
   HAVE_FTRUNCATE=1;       AC_SUBST([HAVE_FTRUNCATE])

-  HAVE_GETDOMAINNAME=1;   AC_SUBST([HAVE_GETDOMAINNAME])

   HAVE_GETDTABLESIZE=1;   AC_SUBST([HAVE_GETDTABLESIZE])
   HAVE_GETGROUPS=1;       AC_SUBST([HAVE_GETGROUPS])
   HAVE_GETHOSTNAME=1;     AC_SUBST([HAVE_GETHOSTNAME])
   HAVE_GETLOGIN=1;        AC_SUBST([HAVE_GETLOGIN])
   HAVE_GETPAGESIZE=1;     AC_SUBST([HAVE_GETPAGESIZE])
   HAVE_GETDTABLESIZE=1;   AC_SUBST([HAVE_GETDTABLESIZE])
   HAVE_GETGROUPS=1;       AC_SUBST([HAVE_GETGROUPS])
   HAVE_GETHOSTNAME=1;     AC_SUBST([HAVE_GETHOSTNAME])
   HAVE_GETLOGIN=1;        AC_SUBST([HAVE_GETLOGIN])
   HAVE_GETPAGESIZE=1;     AC_SUBST([HAVE_GETPAGESIZE])

+  HAVE_GROUP_MEMBER=1;    AC_SUBST([HAVE_GROUP_MEMBER])

   HAVE_LCHOWN=1;          AC_SUBST([HAVE_LCHOWN])
   HAVE_LINK=1;            AC_SUBST([HAVE_LINK])
   HAVE_LINKAT=1;          AC_SUBST([HAVE_LINKAT])
   HAVE_LCHOWN=1;          AC_SUBST([HAVE_LCHOWN])
   HAVE_LINK=1;            AC_SUBST([HAVE_LINK])
   HAVE_LINKAT=1;          AC_SUBST([HAVE_LINKAT])

+  HAVE_PIPE=1;            AC_SUBST([HAVE_PIPE])

   HAVE_PIPE2=1;           AC_SUBST([HAVE_PIPE2])
   HAVE_PREAD=1;           AC_SUBST([HAVE_PREAD])
   HAVE_PIPE2=1;           AC_SUBST([HAVE_PIPE2])
   HAVE_PREAD=1;           AC_SUBST([HAVE_PREAD])

+  HAVE_PWRITE=1;          AC_SUBST([HAVE_PWRITE])

   HAVE_READLINK=1;        AC_SUBST([HAVE_READLINK])
   HAVE_READLINKAT=1;      AC_SUBST([HAVE_READLINKAT])
   HAVE_SLEEP=1;           AC_SUBST([HAVE_SLEEP])
   HAVE_SYMLINK=1;         AC_SUBST([HAVE_SYMLINK])
   HAVE_SYMLINKAT=1;       AC_SUBST([HAVE_SYMLINKAT])
   HAVE_READLINK=1;        AC_SUBST([HAVE_READLINK])
   HAVE_READLINKAT=1;      AC_SUBST([HAVE_READLINKAT])
   HAVE_SLEEP=1;           AC_SUBST([HAVE_SLEEP])
   HAVE_SYMLINK=1;         AC_SUBST([HAVE_SYMLINK])
   HAVE_SYMLINKAT=1;       AC_SUBST([HAVE_SYMLINKAT])

-  HAVE_TTYNAME_R=1;       AC_SUBST([HAVE_TTYNAME_R])

   HAVE_UNLINKAT=1;        AC_SUBST([HAVE_UNLINKAT])
   HAVE_USLEEP=1;          AC_SUBST([HAVE_USLEEP])
   HAVE_DECL_ENVIRON=1;    AC_SUBST([HAVE_DECL_ENVIRON])
   HAVE_UNLINKAT=1;        AC_SUBST([HAVE_UNLINKAT])
   HAVE_USLEEP=1;          AC_SUBST([HAVE_USLEEP])
   HAVE_DECL_ENVIRON=1;    AC_SUBST([HAVE_DECL_ENVIRON])

+  HAVE_DECL_FCHDIR=1;     AC_SUBST([HAVE_DECL_FCHDIR])
+  HAVE_DECL_FDATASYNC=1;  AC_SUBST([HAVE_DECL_FDATASYNC])
+  HAVE_DECL_GETDOMAINNAME=1; AC_SUBST([HAVE_DECL_GETDOMAINNAME])

   HAVE_DECL_GETLOGIN_R=1; AC_SUBST([HAVE_DECL_GETLOGIN_R])
   HAVE_DECL_GETPAGESIZE=1; AC_SUBST([HAVE_DECL_GETPAGESIZE])
   HAVE_DECL_GETUSERSHELL=1; AC_SUBST([HAVE_DECL_GETUSERSHELL])
   HAVE_DECL_GETLOGIN_R=1; AC_SUBST([HAVE_DECL_GETLOGIN_R])
   HAVE_DECL_GETPAGESIZE=1; AC_SUBST([HAVE_DECL_GETPAGESIZE])
   HAVE_DECL_GETUSERSHELL=1; AC_SUBST([HAVE_DECL_GETUSERSHELL])

+  HAVE_DECL_TTYNAME_R=1;  AC_SUBST([HAVE_DECL_TTYNAME_R])

   HAVE_OS_H=0;            AC_SUBST([HAVE_OS_H])
   HAVE_SYS_PARAM_H=0;     AC_SUBST([HAVE_SYS_PARAM_H])
   REPLACE_CHOWN=0;        AC_SUBST([REPLACE_CHOWN])
   REPLACE_CLOSE=0;        AC_SUBST([REPLACE_CLOSE])
   REPLACE_DUP=0;          AC_SUBST([REPLACE_DUP])
   REPLACE_DUP2=0;         AC_SUBST([REPLACE_DUP2])
   HAVE_OS_H=0;            AC_SUBST([HAVE_OS_H])
   HAVE_SYS_PARAM_H=0;     AC_SUBST([HAVE_SYS_PARAM_H])
   REPLACE_CHOWN=0;        AC_SUBST([REPLACE_CHOWN])
   REPLACE_CLOSE=0;        AC_SUBST([REPLACE_CLOSE])
   REPLACE_DUP=0;          AC_SUBST([REPLACE_DUP])
   REPLACE_DUP2=0;         AC_SUBST([REPLACE_DUP2])

-  REPLACE_FCHDIR=0;       AC_SUBST([REPLACE_FCHDIR])

   REPLACE_FCHOWNAT=0;     AC_SUBST([REPLACE_FCHOWNAT])
   REPLACE_GETCWD=0;       AC_SUBST([REPLACE_GETCWD])
   REPLACE_FCHOWNAT=0;     AC_SUBST([REPLACE_FCHOWNAT])
   REPLACE_GETCWD=0;       AC_SUBST([REPLACE_GETCWD])

+  REPLACE_GETDOMAINNAME=0; AC_SUBST([REPLACE_GETDOMAINNAME])
+  REPLACE_GETLOGIN_R=0;   AC_SUBST([REPLACE_GETLOGIN_R])

   REPLACE_GETGROUPS=0;    AC_SUBST([REPLACE_GETGROUPS])
   REPLACE_GETPAGESIZE=0;  AC_SUBST([REPLACE_GETPAGESIZE])
   REPLACE_LCHOWN=0;       AC_SUBST([REPLACE_LCHOWN])
   REPLACE_GETGROUPS=0;    AC_SUBST([REPLACE_GETGROUPS])
   REPLACE_GETPAGESIZE=0;  AC_SUBST([REPLACE_GETPAGESIZE])
   REPLACE_LCHOWN=0;       AC_SUBST([REPLACE_LCHOWN])


@@ -140,10 +160,13 @@ AC_DEFUN([gl_UNISTD_H_DEFAULTS],
   REPLACE_LINKAT=0;       AC_SUBST([REPLACE_LINKAT])
   REPLACE_LSEEK=0;        AC_SUBST([REPLACE_LSEEK])
   REPLACE_PREAD=0;        AC_SUBST([REPLACE_PREAD])
   REPLACE_LINKAT=0;       AC_SUBST([REPLACE_LINKAT])
   REPLACE_LSEEK=0;        AC_SUBST([REPLACE_LSEEK])
   REPLACE_PREAD=0;        AC_SUBST([REPLACE_PREAD])

+  REPLACE_PWRITE=0;       AC_SUBST([REPLACE_PWRITE])
+  REPLACE_READ=0;         AC_SUBST([REPLACE_READ])

   REPLACE_READLINK=0;     AC_SUBST([REPLACE_READLINK])
   REPLACE_RMDIR=0;        AC_SUBST([REPLACE_RMDIR])
   REPLACE_SLEEP=0;        AC_SUBST([REPLACE_SLEEP])
   REPLACE_SYMLINK=0;      AC_SUBST([REPLACE_SYMLINK])
   REPLACE_READLINK=0;     AC_SUBST([REPLACE_READLINK])
   REPLACE_RMDIR=0;        AC_SUBST([REPLACE_RMDIR])
   REPLACE_SLEEP=0;        AC_SUBST([REPLACE_SLEEP])
   REPLACE_SYMLINK=0;      AC_SUBST([REPLACE_SYMLINK])

+  REPLACE_TTYNAME_R=0;    AC_SUBST([REPLACE_TTYNAME_R])

   REPLACE_UNLINK=0;       AC_SUBST([REPLACE_UNLINK])
   REPLACE_UNLINKAT=0;     AC_SUBST([REPLACE_UNLINKAT])
   REPLACE_USLEEP=0;       AC_SUBST([REPLACE_USLEEP])
   REPLACE_UNLINK=0;       AC_SUBST([REPLACE_UNLINK])
   REPLACE_UNLINKAT=0;     AC_SUBST([REPLACE_UNLINKAT])
   REPLACE_USLEEP=0;       AC_SUBST([REPLACE_USLEEP])