# unistd_h.m4 serial 78

dnl Copyright (C) 2006-2020 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 Written by Simon Josefsson, Bruno Haible.

AC_DEFUN([gl_UNISTD_H],

[

  dnl Use AC_REQUIRE here, so that the default behavior below is expanded

  dnl once only, before all statements that occur in other macros.

  AC_REQUIRE([gl_UNISTD_H_DEFAULTS])

  gl_CHECK_NEXT_HEADERS([unistd.h])

  if test $ac_cv_header_unistd_h = yes; then

    HAVE_UNISTD_H=1

  else

    HAVE_UNISTD_H=0

  fi

  AC_SUBST([HAVE_UNISTD_H])

  dnl Ensure the type pid_t gets defined.

  AC_REQUIRE([AC_TYPE_PID_T])

  dnl Determine WINDOWS_64_BIT_OFF_T.

  AC_REQUIRE([gl_TYPE_OFF_T])

  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([[

#if HAVE_UNISTD_H

# include <unistd.h>

#endif

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

#if !(defined __GLIBC__ && !defined __UCLIBC__)

# include <fcntl.h>

# include <stdio.h>

# include <stdlib.h>

# if defined _WIN32 && ! defined __CYGWIN__

#  include <io.h>

# endif

#endif

    ]], [access chdir chown dup dup2 dup3 environ euidaccess faccessat fchdir

    fchownat fdatasync fsync ftruncate getcwd getdomainname getdtablesize

    getentropy getgroups gethostname getlogin getlogin_r getpagesize getpass

    getrandom getusershell setusershell endusershell

    group_member isatty lchown link linkat lseek pipe pipe2 pread pwrite

    readlink readlinkat rmdir sethostname sleep symlink symlinkat

    truncate ttyname_r unlink unlinkat usleep])

  AC_REQUIRE([AC_C_RESTRICT])

])

AC_DEFUN([gl_UNISTD_MODULE_INDICATOR],

[

  dnl Use AC_REQUIRE here, so that the default settings are expanded once only.

  AC_REQUIRE([gl_UNISTD_H_DEFAULTS])

  gl_MODULE_INDICATOR_SET_VARIABLE([$1])

  dnl Define it also as a C macro, for the benefit of the unit tests.

  gl_MODULE_INDICATOR_FOR_TESTS([$1])

])

AC_DEFUN([gl_UNISTD_H_DEFAULTS],

[

  GNULIB_ACCESS=0;               AC_SUBST([GNULIB_ACCESS])

  GNULIB_CHDIR=0;                AC_SUBST([GNULIB_CHDIR])

  GNULIB_CHOWN=0;                AC_SUBST([GNULIB_CHOWN])

  GNULIB_CLOSE=0;                AC_SUBST([GNULIB_CLOSE])

  GNULIB_COPY_FILE_RANGE=0;      AC_SUBST([GNULIB_COPY_FILE_RANGE])

  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_GETENTROPY=0;           AC_SUBST([GNULIB_GETENTROPY])

  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_GETOPT_POSIX=0;         AC_SUBST([GNULIB_GETOPT_POSIX])

  GNULIB_GETPAGESIZE=0;          AC_SUBST([GNULIB_GETPAGESIZE])

  GNULIB_GETPASS=0;              AC_SUBST([GNULIB_GETPASS])

  GNULIB_GETRANDOM=0;            AC_SUBST([GNULIB_GETRANDOM])

  GNULIB_GETUSERSHELL=0;         AC_SUBST([GNULIB_GETUSERSHELL])

  GNULIB_GROUP_MEMBER=0;         AC_SUBST([GNULIB_GROUP_MEMBER])

  GNULIB_ISATTY=0;               AC_SUBST([GNULIB_ISATTY])

  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_SETHOSTNAME=0;          AC_SUBST([GNULIB_SETHOSTNAME])

  GNULIB_SLEEP=0;                AC_SUBST([GNULIB_SLEEP])

  GNULIB_SYMLINK=0;              AC_SUBST([GNULIB_SYMLINK])

  GNULIB_SYMLINKAT=0;            AC_SUBST([GNULIB_SYMLINKAT])

  GNULIB_TRUNCATE=0;             AC_SUBST([GNULIB_TRUNCATE])

  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_COPY_FILE_RANGE=1; AC_SUBST([HAVE_COPY_FILE_RANGE])

  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_FDATASYNC=1;       AC_SUBST([HAVE_FDATASYNC])

  HAVE_FSYNC=1;           AC_SUBST([HAVE_FSYNC])

  HAVE_FTRUNCATE=1;       AC_SUBST([HAVE_FTRUNCATE])

  HAVE_GETDTABLESIZE=1;   AC_SUBST([HAVE_GETDTABLESIZE])

  HAVE_GETENTROPY=1;      AC_SUBST([HAVE_GETENTROPY])

  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_GETPASS=1;         AC_SUBST([HAVE_GETPASS])

  HAVE_GETRANDOM=1;       AC_SUBST([HAVE_GETRANDOM])

  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_PIPE=1;            AC_SUBST([HAVE_PIPE])

  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_SETHOSTNAME=1;     AC_SUBST([HAVE_SETHOSTNAME])

  HAVE_SLEEP=1;           AC_SUBST([HAVE_SLEEP])

  HAVE_SYMLINK=1;         AC_SUBST([HAVE_SYMLINK])

  HAVE_SYMLINKAT=1;       AC_SUBST([HAVE_SYMLINKAT])

  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=1;   AC_SUBST([HAVE_DECL_GETLOGIN])

  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_SETHOSTNAME=1; AC_SUBST([HAVE_DECL_SETHOSTNAME])

  HAVE_DECL_TRUNCATE=1;   AC_SUBST([HAVE_DECL_TRUNCATE])

  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_ACCESS=0;       AC_SUBST([REPLACE_ACCESS])

  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_FACCESSAT=0;    AC_SUBST([REPLACE_FACCESSAT])

  REPLACE_FCHOWNAT=0;     AC_SUBST([REPLACE_FCHOWNAT])

  REPLACE_FTRUNCATE=0;    AC_SUBST([REPLACE_FTRUNCATE])

  REPLACE_GETCWD=0;       AC_SUBST([REPLACE_GETCWD])

  REPLACE_GETDOMAINNAME=0; AC_SUBST([REPLACE_GETDOMAINNAME])

  REPLACE_GETDTABLESIZE=0; AC_SUBST([REPLACE_GETDTABLESIZE])

  REPLACE_GETLOGIN_R=0;   AC_SUBST([REPLACE_GETLOGIN_R])

  REPLACE_GETGROUPS=0;    AC_SUBST([REPLACE_GETGROUPS])

  REPLACE_GETPAGESIZE=0;  AC_SUBST([REPLACE_GETPAGESIZE])

  REPLACE_GETPASS=0;      AC_SUBST([REPLACE_GETPASS])

  REPLACE_ISATTY=0;       AC_SUBST([REPLACE_ISATTY])

  REPLACE_LCHOWN=0;       AC_SUBST([REPLACE_LCHOWN])

  REPLACE_LINK=0;         AC_SUBST([REPLACE_LINK])

  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_READLINKAT=0;   AC_SUBST([REPLACE_READLINKAT])

  REPLACE_RMDIR=0;        AC_SUBST([REPLACE_RMDIR])

  REPLACE_SLEEP=0;        AC_SUBST([REPLACE_SLEEP])

  REPLACE_SYMLINK=0;      AC_SUBST([REPLACE_SYMLINK])

  REPLACE_SYMLINKAT=0;    AC_SUBST([REPLACE_SYMLINKAT])

  REPLACE_TRUNCATE=0;     AC_SUBST([REPLACE_TRUNCATE])

  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_WRITE=0;        AC_SUBST([REPLACE_WRITE])

  UNISTD_H_HAVE_WINSOCK2_H=0; AC_SUBST([UNISTD_H_HAVE_WINSOCK2_H])

  UNISTD_H_HAVE_WINSOCK2_H_AND_USE_SOCKETS=0;

                           AC_SUBST([UNISTD_H_HAVE_WINSOCK2_H_AND_USE_SOCKETS])

])