# unistd_h.m4 # serial 95 dnl Copyright (C) 2006-2024 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 #endif /* Some systems declare various items in the wrong headers. */ #if !(defined __GLIBC__ && !defined __UCLIBC__) # include # include # include # if defined _WIN32 && ! defined __CYGWIN__ # include # 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_FCHDIR=0; AC_SUBST([REPLACE_FCHDIR]) 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]) ])