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-rw-r--r--m4/unistd_h.m4275
1 files changed, 275 insertions, 0 deletions
diff --git a/m4/unistd_h.m4 b/m4/unistd_h.m4
new file mode 100644
index 0000000..1c96158
--- /dev/null
+++ b/m4/unistd_h.m4
@@ -0,0 +1,275 @@
+# unistd_h.m4 serial 94
+dnl Copyright (C) 2006-2023 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_ONCE([gl_UNISTD_H],
+[
+ dnl Ensure to expand the default settings once only, before all statements
+ dnl 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 copy_file_range dup dup2 dup3 environ euidaccess
+ execl execle execlp execv execve execvp execvpe
+ faccessat fchdir
+ fchownat fdatasync fsync ftruncate getcwd getdomainname getdtablesize
+ getentropy getgroups gethostname getlogin getlogin_r getpagesize getpass
+ 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_CHECK_DECLS_ONCE([execvpe])
+ if test $ac_cv_have_decl_execvpe = no; then
+ HAVE_DECL_EXECVPE=0
+ fi
+])
+
+# gl_UNISTD_MODULE_INDICATOR([modulename])
+# sets the shell variable that indicates the presence of the given module
+# to a C preprocessor expression that will evaluate to 1.
+# This macro invocation must not occur in macros that are AC_REQUIREd.
+AC_DEFUN([gl_UNISTD_MODULE_INDICATOR],
+[
+ dnl Ensure to expand the default settings once only.
+ gl_UNISTD_H_REQUIRE_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])
+])
+
+# Initializes the default values for AC_SUBSTed shell variables.
+# This macro must not be AC_REQUIREd. It must only be invoked, and only
+# outside of macros or in macros that are not AC_REQUIREd.
+AC_DEFUN([gl_UNISTD_H_REQUIRE_DEFAULTS],
+[
+ m4_defun(GL_MODULE_INDICATOR_PREFIX[_UNISTD_H_MODULE_INDICATOR_DEFAULTS], [
+ gl_MODULE_INDICATOR_INIT_VARIABLE([GNULIB_ACCESS])
+ gl_MODULE_INDICATOR_INIT_VARIABLE([GNULIB_CHDIR])
+ gl_MODULE_INDICATOR_INIT_VARIABLE([GNULIB_CHOWN])
+ gl_MODULE_INDICATOR_INIT_VARIABLE([GNULIB_CLOSE])
+ gl_MODULE_INDICATOR_INIT_VARIABLE([GNULIB_COPY_FILE_RANGE])
+ gl_MODULE_INDICATOR_INIT_VARIABLE([GNULIB_DUP])
+ gl_MODULE_INDICATOR_INIT_VARIABLE([GNULIB_DUP2])
+ gl_MODULE_INDICATOR_INIT_VARIABLE([GNULIB_DUP3])
+ gl_MODULE_INDICATOR_INIT_VARIABLE([GNULIB_ENVIRON])
+ gl_MODULE_INDICATOR_INIT_VARIABLE([GNULIB_EUIDACCESS])
+ gl_MODULE_INDICATOR_INIT_VARIABLE([GNULIB_EXECL])
+ gl_MODULE_INDICATOR_INIT_VARIABLE([GNULIB_EXECLE])
+ gl_MODULE_INDICATOR_INIT_VARIABLE([GNULIB_EXECLP])
+ gl_MODULE_INDICATOR_INIT_VARIABLE([GNULIB_EXECV])
+ gl_MODULE_INDICATOR_INIT_VARIABLE([GNULIB_EXECVE])
+ gl_MODULE_INDICATOR_INIT_VARIABLE([GNULIB_EXECVP])
+ gl_MODULE_INDICATOR_INIT_VARIABLE([GNULIB_EXECVPE])
+ gl_MODULE_INDICATOR_INIT_VARIABLE([GNULIB_FACCESSAT])
+ gl_MODULE_INDICATOR_INIT_VARIABLE([GNULIB_FCHDIR])
+ gl_MODULE_INDICATOR_INIT_VARIABLE([GNULIB_FCHOWNAT])
+ gl_MODULE_INDICATOR_INIT_VARIABLE([GNULIB_FDATASYNC])
+ gl_MODULE_INDICATOR_INIT_VARIABLE([GNULIB_FSYNC])
+ gl_MODULE_INDICATOR_INIT_VARIABLE([GNULIB_FTRUNCATE])
+ gl_MODULE_INDICATOR_INIT_VARIABLE([GNULIB_GETCWD])
+ gl_MODULE_INDICATOR_INIT_VARIABLE([GNULIB_GETDOMAINNAME])
+ gl_MODULE_INDICATOR_INIT_VARIABLE([GNULIB_GETDTABLESIZE])
+ gl_MODULE_INDICATOR_INIT_VARIABLE([GNULIB_GETENTROPY])
+ gl_MODULE_INDICATOR_INIT_VARIABLE([GNULIB_GETGROUPS])
+ gl_MODULE_INDICATOR_INIT_VARIABLE([GNULIB_GETHOSTNAME])
+ gl_MODULE_INDICATOR_INIT_VARIABLE([GNULIB_GETLOGIN])
+ gl_MODULE_INDICATOR_INIT_VARIABLE([GNULIB_GETLOGIN_R])
+ gl_MODULE_INDICATOR_INIT_VARIABLE([GNULIB_GETOPT_POSIX])
+ gl_MODULE_INDICATOR_INIT_VARIABLE([GNULIB_GETPAGESIZE])
+ gl_MODULE_INDICATOR_INIT_VARIABLE([GNULIB_GETPASS])
+ gl_MODULE_INDICATOR_INIT_VARIABLE([GNULIB_GETPASS_GNU])
+ gl_MODULE_INDICATOR_INIT_VARIABLE([GNULIB_GETUSERSHELL])
+ gl_MODULE_INDICATOR_INIT_VARIABLE([GNULIB_GROUP_MEMBER])
+ gl_MODULE_INDICATOR_INIT_VARIABLE([GNULIB_ISATTY])
+ gl_MODULE_INDICATOR_INIT_VARIABLE([GNULIB_LCHOWN])
+ gl_MODULE_INDICATOR_INIT_VARIABLE([GNULIB_LINK])
+ gl_MODULE_INDICATOR_INIT_VARIABLE([GNULIB_LINKAT])
+ gl_MODULE_INDICATOR_INIT_VARIABLE([GNULIB_LSEEK])
+ gl_MODULE_INDICATOR_INIT_VARIABLE([GNULIB_PIPE])
+ gl_MODULE_INDICATOR_INIT_VARIABLE([GNULIB_PIPE2])
+ gl_MODULE_INDICATOR_INIT_VARIABLE([GNULIB_PREAD])
+ gl_MODULE_INDICATOR_INIT_VARIABLE([GNULIB_PWRITE])
+ gl_MODULE_INDICATOR_INIT_VARIABLE([GNULIB_READ])
+ gl_MODULE_INDICATOR_INIT_VARIABLE([GNULIB_READLINK])
+ gl_MODULE_INDICATOR_INIT_VARIABLE([GNULIB_READLINKAT])
+ gl_MODULE_INDICATOR_INIT_VARIABLE([GNULIB_RMDIR])
+ gl_MODULE_INDICATOR_INIT_VARIABLE([GNULIB_SETHOSTNAME])
+ gl_MODULE_INDICATOR_INIT_VARIABLE([GNULIB_SLEEP])
+ gl_MODULE_INDICATOR_INIT_VARIABLE([GNULIB_SYMLINK])
+ gl_MODULE_INDICATOR_INIT_VARIABLE([GNULIB_SYMLINKAT])
+ gl_MODULE_INDICATOR_INIT_VARIABLE([GNULIB_TRUNCATE])
+ gl_MODULE_INDICATOR_INIT_VARIABLE([GNULIB_TTYNAME_R])
+ gl_MODULE_INDICATOR_INIT_VARIABLE([GNULIB_UNISTD_H_GETOPT])
+ gl_MODULE_INDICATOR_INIT_VARIABLE([GNULIB_UNISTD_H_NONBLOCKING])
+ gl_MODULE_INDICATOR_INIT_VARIABLE([GNULIB_UNISTD_H_SIGPIPE])
+ gl_MODULE_INDICATOR_INIT_VARIABLE([GNULIB_UNLINK])
+ gl_MODULE_INDICATOR_INIT_VARIABLE([GNULIB_UNLINKAT])
+ gl_MODULE_INDICATOR_INIT_VARIABLE([GNULIB_USLEEP])
+ gl_MODULE_INDICATOR_INIT_VARIABLE([GNULIB_WRITE])
+ dnl Support Microsoft deprecated alias function names by default.
+ gl_MODULE_INDICATOR_INIT_VARIABLE([GNULIB_MDA_ACCESS], [1])
+ gl_MODULE_INDICATOR_INIT_VARIABLE([GNULIB_MDA_CHDIR], [1])
+ gl_MODULE_INDICATOR_INIT_VARIABLE([GNULIB_MDA_CLOSE], [1])
+ gl_MODULE_INDICATOR_INIT_VARIABLE([GNULIB_MDA_DUP], [1])
+ gl_MODULE_INDICATOR_INIT_VARIABLE([GNULIB_MDA_DUP2], [1])
+ gl_MODULE_INDICATOR_INIT_VARIABLE([GNULIB_MDA_EXECL], [1])
+ gl_MODULE_INDICATOR_INIT_VARIABLE([GNULIB_MDA_EXECLE], [1])
+ gl_MODULE_INDICATOR_INIT_VARIABLE([GNULIB_MDA_EXECLP], [1])
+ gl_MODULE_INDICATOR_INIT_VARIABLE([GNULIB_MDA_EXECV], [1])
+ gl_MODULE_INDICATOR_INIT_VARIABLE([GNULIB_MDA_EXECVE], [1])
+ gl_MODULE_INDICATOR_INIT_VARIABLE([GNULIB_MDA_EXECVP], [1])
+ gl_MODULE_INDICATOR_INIT_VARIABLE([GNULIB_MDA_EXECVPE], [1])
+ gl_MODULE_INDICATOR_INIT_VARIABLE([GNULIB_MDA_GETCWD], [1])
+ gl_MODULE_INDICATOR_INIT_VARIABLE([GNULIB_MDA_GETPID], [1])
+ gl_MODULE_INDICATOR_INIT_VARIABLE([GNULIB_MDA_ISATTY], [1])
+ gl_MODULE_INDICATOR_INIT_VARIABLE([GNULIB_MDA_LSEEK], [1])
+ gl_MODULE_INDICATOR_INIT_VARIABLE([GNULIB_MDA_READ], [1])
+ gl_MODULE_INDICATOR_INIT_VARIABLE([GNULIB_MDA_RMDIR], [1])
+ gl_MODULE_INDICATOR_INIT_VARIABLE([GNULIB_MDA_SWAB], [1])
+ gl_MODULE_INDICATOR_INIT_VARIABLE([GNULIB_MDA_UNLINK], [1])
+ gl_MODULE_INDICATOR_INIT_VARIABLE([GNULIB_MDA_WRITE], [1])
+ ])
+ m4_require(GL_MODULE_INDICATOR_PREFIX[_UNISTD_H_MODULE_INDICATOR_DEFAULTS])
+ AC_REQUIRE([gl_UNISTD_H_DEFAULTS])
+])
+
+AC_DEFUN([gl_UNISTD_H_DEFAULTS],
+[
+ 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_DUP3=1; AC_SUBST([HAVE_DUP3])
+ HAVE_EUIDACCESS=1; AC_SUBST([HAVE_EUIDACCESS])
+ HAVE_EXECVPE=1; AC_SUBST([HAVE_EXECVPE])
+ 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_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_EXECVPE=1; AC_SUBST([HAVE_DECL_EXECVPE])
+ 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_COPY_FILE_RANGE=0; AC_SUBST([REPLACE_COPY_FILE_RANGE])
+ REPLACE_DUP=0; AC_SUBST([REPLACE_DUP])
+ REPLACE_DUP2=0; AC_SUBST([REPLACE_DUP2])
+ REPLACE_DUP3=0; AC_SUBST([REPLACE_DUP3])
+ REPLACE_EXECL=0; AC_SUBST([REPLACE_EXECL])
+ REPLACE_EXECLE=0; AC_SUBST([REPLACE_EXECLE])
+ REPLACE_EXECLP=0; AC_SUBST([REPLACE_EXECLP])
+ REPLACE_EXECV=0; AC_SUBST([REPLACE_EXECV])
+ REPLACE_EXECVE=0; AC_SUBST([REPLACE_EXECVE])
+ REPLACE_EXECVP=0; AC_SUBST([REPLACE_EXECVP])
+ REPLACE_EXECVPE=0; AC_SUBST([REPLACE_EXECVPE])
+ REPLACE_FACCESSAT=0; AC_SUBST([REPLACE_FACCESSAT])
+ REPLACE_FCHOWNAT=0; AC_SUBST([REPLACE_FCHOWNAT])
+ REPLACE_FDATASYNC=0; AC_SUBST([REPLACE_FDATASYNC])
+ 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_GETENTROPY=0; AC_SUBST([REPLACE_GETENTROPY])
+ 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_GETPASS_FOR_GETPASS_GNU=0; AC_SUBST([REPLACE_GETPASS_FOR_GETPASS_GNU])
+ 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_PIPE2=0; AC_SUBST([REPLACE_PIPE2])
+ 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_SETHOSTNAME=0; AC_SUBST([REPLACE_SETHOSTNAME])
+ 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_SYS_RANDOM_H=0; AC_SUBST([UNISTD_H_HAVE_SYS_RANDOM_H])
+ 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])
+])