270 lines
14 KiB
Text
270 lines
14 KiB
Text
# unistd_h.m4 serial 90
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dnl Copyright (C) 2006-2023 Free Software Foundation, Inc.
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dnl This file is free software; the Free Software Foundation
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dnl gives unlimited permission to copy and/or distribute it,
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dnl with or without modifications, as long as this notice is preserved.
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dnl Written by Simon Josefsson, Bruno Haible.
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AC_DEFUN_ONCE([gl_UNISTD_H],
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[
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dnl Ensure to expand the default settings once only, before all statements
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dnl that occur in other macros.
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AC_REQUIRE([gl_UNISTD_H_DEFAULTS])
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gl_CHECK_NEXT_HEADERS([unistd.h])
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if test $ac_cv_header_unistd_h = yes; then
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HAVE_UNISTD_H=1
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else
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HAVE_UNISTD_H=0
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fi
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AC_SUBST([HAVE_UNISTD_H])
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dnl Ensure the type pid_t gets defined.
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AC_REQUIRE([AC_TYPE_PID_T])
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dnl Determine WINDOWS_64_BIT_OFF_T.
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AC_REQUIRE([gl_TYPE_OFF_T])
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dnl Check for declarations of anything we want to poison if the
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dnl corresponding gnulib module is not in use.
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gl_WARN_ON_USE_PREPARE([[
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#if HAVE_UNISTD_H
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# include <unistd.h>
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#endif
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/* Some systems declare various items in the wrong headers. */
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#if !(defined __GLIBC__ && !defined __UCLIBC__)
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# include <fcntl.h>
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# include <stdio.h>
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# include <stdlib.h>
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# if defined _WIN32 && ! defined __CYGWIN__
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# include <io.h>
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# endif
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#endif
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]], [access chdir chown copy_file_range dup dup2 dup3 environ euidaccess
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execl execle execlp execv execve execvp execvpe
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faccessat fchdir
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fchownat fdatasync fsync ftruncate getcwd getdomainname getdtablesize
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getentropy getgroups gethostname getlogin getlogin_r getpagesize getpass
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getusershell setusershell endusershell
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group_member isatty lchown link linkat lseek pipe pipe2 pread pwrite
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readlink readlinkat rmdir sethostname sleep symlink symlinkat
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truncate ttyname_r unlink unlinkat usleep])
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AC_REQUIRE([AC_C_RESTRICT])
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AC_CHECK_DECLS_ONCE([execvpe])
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if test $ac_cv_have_decl_execvpe = no; then
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HAVE_DECL_EXECVPE=0
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fi
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])
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# gl_UNISTD_MODULE_INDICATOR([modulename])
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# sets the shell variable that indicates the presence of the given module
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# to a C preprocessor expression that will evaluate to 1.
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# This macro invocation must not occur in macros that are AC_REQUIREd.
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AC_DEFUN([gl_UNISTD_MODULE_INDICATOR],
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[
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dnl Ensure to expand the default settings once only.
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gl_UNISTD_H_REQUIRE_DEFAULTS
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gl_MODULE_INDICATOR_SET_VARIABLE([$1])
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dnl Define it also as a C macro, for the benefit of the unit tests.
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gl_MODULE_INDICATOR_FOR_TESTS([$1])
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])
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# Initializes the default values for AC_SUBSTed shell variables.
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# This macro must not be AC_REQUIREd. It must only be invoked, and only
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# outside of macros or in macros that are not AC_REQUIREd.
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AC_DEFUN([gl_UNISTD_H_REQUIRE_DEFAULTS],
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[
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m4_defun(GL_MODULE_INDICATOR_PREFIX[_UNISTD_H_MODULE_INDICATOR_DEFAULTS], [
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gl_MODULE_INDICATOR_INIT_VARIABLE([GNULIB_ACCESS])
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gl_MODULE_INDICATOR_INIT_VARIABLE([GNULIB_CHDIR])
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gl_MODULE_INDICATOR_INIT_VARIABLE([GNULIB_CHOWN])
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gl_MODULE_INDICATOR_INIT_VARIABLE([GNULIB_CLOSE])
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gl_MODULE_INDICATOR_INIT_VARIABLE([GNULIB_COPY_FILE_RANGE])
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gl_MODULE_INDICATOR_INIT_VARIABLE([GNULIB_DUP])
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gl_MODULE_INDICATOR_INIT_VARIABLE([GNULIB_DUP2])
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gl_MODULE_INDICATOR_INIT_VARIABLE([GNULIB_DUP3])
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gl_MODULE_INDICATOR_INIT_VARIABLE([GNULIB_ENVIRON])
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gl_MODULE_INDICATOR_INIT_VARIABLE([GNULIB_EUIDACCESS])
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gl_MODULE_INDICATOR_INIT_VARIABLE([GNULIB_EXECL])
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gl_MODULE_INDICATOR_INIT_VARIABLE([GNULIB_EXECLE])
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gl_MODULE_INDICATOR_INIT_VARIABLE([GNULIB_EXECLP])
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gl_MODULE_INDICATOR_INIT_VARIABLE([GNULIB_EXECV])
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gl_MODULE_INDICATOR_INIT_VARIABLE([GNULIB_EXECVE])
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gl_MODULE_INDICATOR_INIT_VARIABLE([GNULIB_EXECVP])
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gl_MODULE_INDICATOR_INIT_VARIABLE([GNULIB_EXECVPE])
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gl_MODULE_INDICATOR_INIT_VARIABLE([GNULIB_FACCESSAT])
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gl_MODULE_INDICATOR_INIT_VARIABLE([GNULIB_FCHDIR])
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gl_MODULE_INDICATOR_INIT_VARIABLE([GNULIB_FCHOWNAT])
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gl_MODULE_INDICATOR_INIT_VARIABLE([GNULIB_FDATASYNC])
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gl_MODULE_INDICATOR_INIT_VARIABLE([GNULIB_FSYNC])
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gl_MODULE_INDICATOR_INIT_VARIABLE([GNULIB_FTRUNCATE])
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gl_MODULE_INDICATOR_INIT_VARIABLE([GNULIB_GETCWD])
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gl_MODULE_INDICATOR_INIT_VARIABLE([GNULIB_GETDOMAINNAME])
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gl_MODULE_INDICATOR_INIT_VARIABLE([GNULIB_GETDTABLESIZE])
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gl_MODULE_INDICATOR_INIT_VARIABLE([GNULIB_GETENTROPY])
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gl_MODULE_INDICATOR_INIT_VARIABLE([GNULIB_GETGROUPS])
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gl_MODULE_INDICATOR_INIT_VARIABLE([GNULIB_GETHOSTNAME])
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gl_MODULE_INDICATOR_INIT_VARIABLE([GNULIB_GETLOGIN])
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gl_MODULE_INDICATOR_INIT_VARIABLE([GNULIB_GETLOGIN_R])
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gl_MODULE_INDICATOR_INIT_VARIABLE([GNULIB_GETOPT_POSIX])
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gl_MODULE_INDICATOR_INIT_VARIABLE([GNULIB_GETPAGESIZE])
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gl_MODULE_INDICATOR_INIT_VARIABLE([GNULIB_GETPASS])
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gl_MODULE_INDICATOR_INIT_VARIABLE([GNULIB_GETPASS_GNU])
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gl_MODULE_INDICATOR_INIT_VARIABLE([GNULIB_GETUSERSHELL])
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gl_MODULE_INDICATOR_INIT_VARIABLE([GNULIB_GROUP_MEMBER])
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gl_MODULE_INDICATOR_INIT_VARIABLE([GNULIB_ISATTY])
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gl_MODULE_INDICATOR_INIT_VARIABLE([GNULIB_LCHOWN])
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gl_MODULE_INDICATOR_INIT_VARIABLE([GNULIB_LINK])
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gl_MODULE_INDICATOR_INIT_VARIABLE([GNULIB_LINKAT])
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gl_MODULE_INDICATOR_INIT_VARIABLE([GNULIB_LSEEK])
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gl_MODULE_INDICATOR_INIT_VARIABLE([GNULIB_PIPE])
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gl_MODULE_INDICATOR_INIT_VARIABLE([GNULIB_PIPE2])
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gl_MODULE_INDICATOR_INIT_VARIABLE([GNULIB_PREAD])
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gl_MODULE_INDICATOR_INIT_VARIABLE([GNULIB_PWRITE])
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gl_MODULE_INDICATOR_INIT_VARIABLE([GNULIB_READ])
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gl_MODULE_INDICATOR_INIT_VARIABLE([GNULIB_READLINK])
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gl_MODULE_INDICATOR_INIT_VARIABLE([GNULIB_READLINKAT])
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gl_MODULE_INDICATOR_INIT_VARIABLE([GNULIB_RMDIR])
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gl_MODULE_INDICATOR_INIT_VARIABLE([GNULIB_SETHOSTNAME])
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gl_MODULE_INDICATOR_INIT_VARIABLE([GNULIB_SLEEP])
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gl_MODULE_INDICATOR_INIT_VARIABLE([GNULIB_SYMLINK])
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gl_MODULE_INDICATOR_INIT_VARIABLE([GNULIB_SYMLINKAT])
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gl_MODULE_INDICATOR_INIT_VARIABLE([GNULIB_TRUNCATE])
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gl_MODULE_INDICATOR_INIT_VARIABLE([GNULIB_TTYNAME_R])
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gl_MODULE_INDICATOR_INIT_VARIABLE([GNULIB_UNISTD_H_GETOPT])
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gl_MODULE_INDICATOR_INIT_VARIABLE([GNULIB_UNISTD_H_NONBLOCKING])
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gl_MODULE_INDICATOR_INIT_VARIABLE([GNULIB_UNISTD_H_SIGPIPE])
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gl_MODULE_INDICATOR_INIT_VARIABLE([GNULIB_UNLINK])
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gl_MODULE_INDICATOR_INIT_VARIABLE([GNULIB_UNLINKAT])
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gl_MODULE_INDICATOR_INIT_VARIABLE([GNULIB_USLEEP])
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gl_MODULE_INDICATOR_INIT_VARIABLE([GNULIB_WRITE])
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dnl Support Microsoft deprecated alias function names by default.
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gl_MODULE_INDICATOR_INIT_VARIABLE([GNULIB_MDA_ACCESS], [1])
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gl_MODULE_INDICATOR_INIT_VARIABLE([GNULIB_MDA_CHDIR], [1])
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gl_MODULE_INDICATOR_INIT_VARIABLE([GNULIB_MDA_CLOSE], [1])
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gl_MODULE_INDICATOR_INIT_VARIABLE([GNULIB_MDA_DUP], [1])
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gl_MODULE_INDICATOR_INIT_VARIABLE([GNULIB_MDA_DUP2], [1])
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gl_MODULE_INDICATOR_INIT_VARIABLE([GNULIB_MDA_EXECL], [1])
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gl_MODULE_INDICATOR_INIT_VARIABLE([GNULIB_MDA_EXECLE], [1])
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gl_MODULE_INDICATOR_INIT_VARIABLE([GNULIB_MDA_EXECLP], [1])
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gl_MODULE_INDICATOR_INIT_VARIABLE([GNULIB_MDA_EXECV], [1])
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gl_MODULE_INDICATOR_INIT_VARIABLE([GNULIB_MDA_EXECVE], [1])
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gl_MODULE_INDICATOR_INIT_VARIABLE([GNULIB_MDA_EXECVP], [1])
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gl_MODULE_INDICATOR_INIT_VARIABLE([GNULIB_MDA_EXECVPE], [1])
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gl_MODULE_INDICATOR_INIT_VARIABLE([GNULIB_MDA_GETCWD], [1])
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gl_MODULE_INDICATOR_INIT_VARIABLE([GNULIB_MDA_GETPID], [1])
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gl_MODULE_INDICATOR_INIT_VARIABLE([GNULIB_MDA_ISATTY], [1])
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gl_MODULE_INDICATOR_INIT_VARIABLE([GNULIB_MDA_LSEEK], [1])
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gl_MODULE_INDICATOR_INIT_VARIABLE([GNULIB_MDA_READ], [1])
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gl_MODULE_INDICATOR_INIT_VARIABLE([GNULIB_MDA_RMDIR], [1])
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gl_MODULE_INDICATOR_INIT_VARIABLE([GNULIB_MDA_SWAB], [1])
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gl_MODULE_INDICATOR_INIT_VARIABLE([GNULIB_MDA_UNLINK], [1])
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gl_MODULE_INDICATOR_INIT_VARIABLE([GNULIB_MDA_WRITE], [1])
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])
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m4_require(GL_MODULE_INDICATOR_PREFIX[_UNISTD_H_MODULE_INDICATOR_DEFAULTS])
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AC_REQUIRE([gl_UNISTD_H_DEFAULTS])
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])
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AC_DEFUN([gl_UNISTD_H_DEFAULTS],
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[
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dnl Assume proper GNU behavior unless another module says otherwise.
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HAVE_CHOWN=1; AC_SUBST([HAVE_CHOWN])
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HAVE_COPY_FILE_RANGE=1; AC_SUBST([HAVE_COPY_FILE_RANGE])
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HAVE_DUP3=1; AC_SUBST([HAVE_DUP3])
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HAVE_EUIDACCESS=1; AC_SUBST([HAVE_EUIDACCESS])
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HAVE_EXECVPE=1; AC_SUBST([HAVE_EXECVPE])
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HAVE_FACCESSAT=1; AC_SUBST([HAVE_FACCESSAT])
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HAVE_FCHDIR=1; AC_SUBST([HAVE_FCHDIR])
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HAVE_FCHOWNAT=1; AC_SUBST([HAVE_FCHOWNAT])
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HAVE_FDATASYNC=1; AC_SUBST([HAVE_FDATASYNC])
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HAVE_FSYNC=1; AC_SUBST([HAVE_FSYNC])
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HAVE_FTRUNCATE=1; AC_SUBST([HAVE_FTRUNCATE])
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HAVE_GETDTABLESIZE=1; AC_SUBST([HAVE_GETDTABLESIZE])
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HAVE_GETENTROPY=1; AC_SUBST([HAVE_GETENTROPY])
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HAVE_GETGROUPS=1; AC_SUBST([HAVE_GETGROUPS])
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HAVE_GETHOSTNAME=1; AC_SUBST([HAVE_GETHOSTNAME])
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HAVE_GETLOGIN=1; AC_SUBST([HAVE_GETLOGIN])
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HAVE_GETPAGESIZE=1; AC_SUBST([HAVE_GETPAGESIZE])
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HAVE_GETPASS=1; AC_SUBST([HAVE_GETPASS])
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HAVE_GROUP_MEMBER=1; AC_SUBST([HAVE_GROUP_MEMBER])
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HAVE_LCHOWN=1; AC_SUBST([HAVE_LCHOWN])
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HAVE_LINK=1; AC_SUBST([HAVE_LINK])
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HAVE_LINKAT=1; AC_SUBST([HAVE_LINKAT])
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HAVE_PIPE=1; AC_SUBST([HAVE_PIPE])
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HAVE_PIPE2=1; AC_SUBST([HAVE_PIPE2])
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HAVE_PREAD=1; AC_SUBST([HAVE_PREAD])
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HAVE_PWRITE=1; AC_SUBST([HAVE_PWRITE])
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HAVE_READLINK=1; AC_SUBST([HAVE_READLINK])
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HAVE_READLINKAT=1; AC_SUBST([HAVE_READLINKAT])
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HAVE_SETHOSTNAME=1; AC_SUBST([HAVE_SETHOSTNAME])
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HAVE_SLEEP=1; AC_SUBST([HAVE_SLEEP])
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HAVE_SYMLINK=1; AC_SUBST([HAVE_SYMLINK])
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HAVE_SYMLINKAT=1; AC_SUBST([HAVE_SYMLINKAT])
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HAVE_UNLINKAT=1; AC_SUBST([HAVE_UNLINKAT])
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HAVE_USLEEP=1; AC_SUBST([HAVE_USLEEP])
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HAVE_DECL_ENVIRON=1; AC_SUBST([HAVE_DECL_ENVIRON])
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HAVE_DECL_EXECVPE=1; AC_SUBST([HAVE_DECL_EXECVPE])
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HAVE_DECL_FCHDIR=1; AC_SUBST([HAVE_DECL_FCHDIR])
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HAVE_DECL_FDATASYNC=1; AC_SUBST([HAVE_DECL_FDATASYNC])
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HAVE_DECL_GETDOMAINNAME=1; AC_SUBST([HAVE_DECL_GETDOMAINNAME])
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HAVE_DECL_GETLOGIN=1; AC_SUBST([HAVE_DECL_GETLOGIN])
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HAVE_DECL_GETLOGIN_R=1; AC_SUBST([HAVE_DECL_GETLOGIN_R])
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HAVE_DECL_GETPAGESIZE=1; AC_SUBST([HAVE_DECL_GETPAGESIZE])
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HAVE_DECL_GETUSERSHELL=1; AC_SUBST([HAVE_DECL_GETUSERSHELL])
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HAVE_DECL_SETHOSTNAME=1; AC_SUBST([HAVE_DECL_SETHOSTNAME])
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HAVE_DECL_TRUNCATE=1; AC_SUBST([HAVE_DECL_TRUNCATE])
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HAVE_DECL_TTYNAME_R=1; AC_SUBST([HAVE_DECL_TTYNAME_R])
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HAVE_OS_H=0; AC_SUBST([HAVE_OS_H])
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HAVE_SYS_PARAM_H=0; AC_SUBST([HAVE_SYS_PARAM_H])
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REPLACE_ACCESS=0; AC_SUBST([REPLACE_ACCESS])
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REPLACE_CHOWN=0; AC_SUBST([REPLACE_CHOWN])
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REPLACE_CLOSE=0; AC_SUBST([REPLACE_CLOSE])
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REPLACE_COPY_FILE_RANGE=0; AC_SUBST([REPLACE_COPY_FILE_RANGE])
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REPLACE_DUP=0; AC_SUBST([REPLACE_DUP])
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REPLACE_DUP2=0; AC_SUBST([REPLACE_DUP2])
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REPLACE_EXECL=0; AC_SUBST([REPLACE_EXECL])
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REPLACE_EXECLE=0; AC_SUBST([REPLACE_EXECLE])
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REPLACE_EXECLP=0; AC_SUBST([REPLACE_EXECLP])
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REPLACE_EXECV=0; AC_SUBST([REPLACE_EXECV])
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REPLACE_EXECVE=0; AC_SUBST([REPLACE_EXECVE])
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REPLACE_EXECVP=0; AC_SUBST([REPLACE_EXECVP])
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REPLACE_EXECVPE=0; AC_SUBST([REPLACE_EXECVPE])
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REPLACE_FACCESSAT=0; AC_SUBST([REPLACE_FACCESSAT])
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REPLACE_FCHOWNAT=0; AC_SUBST([REPLACE_FCHOWNAT])
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REPLACE_FTRUNCATE=0; AC_SUBST([REPLACE_FTRUNCATE])
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REPLACE_GETCWD=0; AC_SUBST([REPLACE_GETCWD])
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REPLACE_GETDOMAINNAME=0; AC_SUBST([REPLACE_GETDOMAINNAME])
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REPLACE_GETDTABLESIZE=0; AC_SUBST([REPLACE_GETDTABLESIZE])
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REPLACE_GETLOGIN_R=0; AC_SUBST([REPLACE_GETLOGIN_R])
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REPLACE_GETGROUPS=0; AC_SUBST([REPLACE_GETGROUPS])
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REPLACE_GETPAGESIZE=0; AC_SUBST([REPLACE_GETPAGESIZE])
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REPLACE_GETPASS=0; AC_SUBST([REPLACE_GETPASS])
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REPLACE_GETPASS_FOR_GETPASS_GNU=0; AC_SUBST([REPLACE_GETPASS_FOR_GETPASS_GNU])
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REPLACE_ISATTY=0; AC_SUBST([REPLACE_ISATTY])
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REPLACE_LCHOWN=0; AC_SUBST([REPLACE_LCHOWN])
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REPLACE_LINK=0; AC_SUBST([REPLACE_LINK])
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REPLACE_LINKAT=0; AC_SUBST([REPLACE_LINKAT])
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REPLACE_LSEEK=0; AC_SUBST([REPLACE_LSEEK])
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REPLACE_PREAD=0; AC_SUBST([REPLACE_PREAD])
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REPLACE_PWRITE=0; AC_SUBST([REPLACE_PWRITE])
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REPLACE_READ=0; AC_SUBST([REPLACE_READ])
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REPLACE_READLINK=0; AC_SUBST([REPLACE_READLINK])
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REPLACE_READLINKAT=0; AC_SUBST([REPLACE_READLINKAT])
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REPLACE_RMDIR=0; AC_SUBST([REPLACE_RMDIR])
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REPLACE_SLEEP=0; AC_SUBST([REPLACE_SLEEP])
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REPLACE_SYMLINK=0; AC_SUBST([REPLACE_SYMLINK])
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REPLACE_SYMLINKAT=0; AC_SUBST([REPLACE_SYMLINKAT])
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REPLACE_TRUNCATE=0; AC_SUBST([REPLACE_TRUNCATE])
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REPLACE_TTYNAME_R=0; AC_SUBST([REPLACE_TTYNAME_R])
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REPLACE_UNLINK=0; AC_SUBST([REPLACE_UNLINK])
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REPLACE_UNLINKAT=0; AC_SUBST([REPLACE_UNLINKAT])
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REPLACE_USLEEP=0; AC_SUBST([REPLACE_USLEEP])
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REPLACE_WRITE=0; AC_SUBST([REPLACE_WRITE])
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UNISTD_H_HAVE_SYS_RANDOM_H=0; AC_SUBST([UNISTD_H_HAVE_SYS_RANDOM_H])
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UNISTD_H_HAVE_WINSOCK2_H=0; AC_SUBST([UNISTD_H_HAVE_WINSOCK2_H])
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UNISTD_H_HAVE_WINSOCK2_H_AND_USE_SOCKETS=0;
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AC_SUBST([UNISTD_H_HAVE_WINSOCK2_H_AND_USE_SOCKETS])
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])
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