diff options
Diffstat (limited to 'm4/unistd_h.m4')
| -rw-r--r-- | m4/unistd_h.m4 | 270 |
1 files changed, 270 insertions, 0 deletions
diff --git a/m4/unistd_h.m4 b/m4/unistd_h.m4 new file mode 100644 index 0000000..4c66ccc --- /dev/null +++ b/m4/unistd_h.m4 @@ -0,0 +1,270 @@ +# unistd_h.m4 serial 90 +dnl Copyright (C) 2006-2022 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_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_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_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_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_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]) +]) |