1# sys_stat_h.m4 serial 41 -*- Autoconf -*- 2dnl Copyright (C) 2006-2022 Free Software Foundation, Inc. 3dnl This file is free software; the Free Software Foundation 4dnl gives unlimited permission to copy and/or distribute it, 5dnl with or without modifications, as long as this notice is preserved. 6 7dnl From Eric Blake. 8dnl Provide a GNU-like <sys/stat.h>. 9 10AC_DEFUN_ONCE([gl_SYS_STAT_H], 11[ 12 AC_REQUIRE([gl_SYS_STAT_H_DEFAULTS]) 13 14 dnl Check for broken stat macros. 15 AC_REQUIRE([AC_HEADER_STAT]) 16 17 gl_CHECK_NEXT_HEADERS([sys/stat.h]) 18 19 dnl Ensure the type mode_t gets defined. 20 AC_REQUIRE([AC_TYPE_MODE_T]) 21 22 dnl Whether to enable precise timestamps in 'struct stat'. 23 m4_ifdef([gl_WINDOWS_STAT_TIMESPEC], [ 24 AC_REQUIRE([gl_WINDOWS_STAT_TIMESPEC]) 25 ], [ 26 WINDOWS_STAT_TIMESPEC=0 27 ]) 28 AC_SUBST([WINDOWS_STAT_TIMESPEC]) 29 30 dnl Whether to ensure that struct stat.st_size is 64-bit wide. 31 m4_ifdef([gl_LARGEFILE], [ 32 AC_REQUIRE([gl_LARGEFILE]) 33 ], [ 34 WINDOWS_64_BIT_ST_SIZE=0 35 ]) 36 AC_SUBST([WINDOWS_64_BIT_ST_SIZE]) 37 38 dnl Define types that are supposed to be defined in <sys/types.h> or 39 dnl <sys/stat.h>. 40 AC_CHECK_TYPE([nlink_t], [], 41 [AC_DEFINE([nlink_t], [int], 42 [Define to the type of st_nlink in struct stat, or a supertype.])], 43 [#include <sys/types.h> 44 #include <sys/stat.h>]) 45 46 dnl Check for declarations of anything we want to poison if the 47 dnl corresponding gnulib module is not in use. 48 gl_WARN_ON_USE_PREPARE([[#include <sys/stat.h> 49 ]], [fchmodat fstat fstatat futimens getumask lchmod lstat 50 mkdirat mkfifo mkfifoat mknod mknodat stat utimensat]) 51 52 AC_REQUIRE([AC_C_RESTRICT]) 53]) 54 55# gl_SYS_STAT_MODULE_INDICATOR([modulename]) 56# sets the shell variable that indicates the presence of the given module 57# to a C preprocessor expression that will evaluate to 1. 58# This macro invocation must not occur in macros that are AC_REQUIREd. 59AC_DEFUN([gl_SYS_STAT_MODULE_INDICATOR], 60[ 61 dnl Ensure to expand the default settings once only. 62 gl_SYS_STAT_H_REQUIRE_DEFAULTS 63 gl_MODULE_INDICATOR_SET_VARIABLE([$1]) 64 dnl Define it also as a C macro, for the benefit of the unit tests. 65 gl_MODULE_INDICATOR_FOR_TESTS([$1]) 66]) 67 68# Initializes the default values for AC_SUBSTed shell variables. 69# This macro must not be AC_REQUIREd. It must only be invoked, and only 70# outside of macros or in macros that are not AC_REQUIREd. 71AC_DEFUN([gl_SYS_STAT_H_REQUIRE_DEFAULTS], 72[ 73 m4_defun(GL_MODULE_INDICATOR_PREFIX[_SYS_STAT_H_MODULE_INDICATOR_DEFAULTS], [ 74 gl_UNISTD_H_REQUIRE_DEFAULTS dnl for REPLACE_FCHDIR 75 gl_MODULE_INDICATOR_INIT_VARIABLE([GNULIB_FCHMODAT]) 76 gl_MODULE_INDICATOR_INIT_VARIABLE([GNULIB_FSTAT]) 77 gl_MODULE_INDICATOR_INIT_VARIABLE([GNULIB_FSTATAT]) 78 gl_MODULE_INDICATOR_INIT_VARIABLE([GNULIB_FUTIMENS]) 79 gl_MODULE_INDICATOR_INIT_VARIABLE([GNULIB_GETUMASK]) 80 gl_MODULE_INDICATOR_INIT_VARIABLE([GNULIB_LCHMOD]) 81 gl_MODULE_INDICATOR_INIT_VARIABLE([GNULIB_LSTAT]) 82 gl_MODULE_INDICATOR_INIT_VARIABLE([GNULIB_MKDIR]) 83 gl_MODULE_INDICATOR_INIT_VARIABLE([GNULIB_MKDIRAT]) 84 gl_MODULE_INDICATOR_INIT_VARIABLE([GNULIB_MKFIFO]) 85 gl_MODULE_INDICATOR_INIT_VARIABLE([GNULIB_MKFIFOAT]) 86 gl_MODULE_INDICATOR_INIT_VARIABLE([GNULIB_MKNOD]) 87 gl_MODULE_INDICATOR_INIT_VARIABLE([GNULIB_MKNODAT]) 88 gl_MODULE_INDICATOR_INIT_VARIABLE([GNULIB_STAT]) 89 gl_MODULE_INDICATOR_INIT_VARIABLE([GNULIB_UTIMENSAT]) 90 gl_MODULE_INDICATOR_INIT_VARIABLE([GNULIB_OVERRIDES_STRUCT_STAT]) 91 dnl Support Microsoft deprecated alias function names by default. 92 gl_MODULE_INDICATOR_INIT_VARIABLE([GNULIB_MDA_CHMOD], [1]) 93 gl_MODULE_INDICATOR_INIT_VARIABLE([GNULIB_MDA_MKDIR], [1]) 94 gl_MODULE_INDICATOR_INIT_VARIABLE([GNULIB_MDA_UMASK], [1]) 95 ]) 96 m4_require(GL_MODULE_INDICATOR_PREFIX[_SYS_STAT_H_MODULE_INDICATOR_DEFAULTS]) 97 AC_REQUIRE([gl_SYS_STAT_H_DEFAULTS]) 98]) 99 100AC_DEFUN([gl_SYS_STAT_H_DEFAULTS], 101[ 102 dnl Assume proper GNU behavior unless another module says otherwise. 103 HAVE_FCHMODAT=1; AC_SUBST([HAVE_FCHMODAT]) 104 HAVE_FSTATAT=1; AC_SUBST([HAVE_FSTATAT]) 105 HAVE_FUTIMENS=1; AC_SUBST([HAVE_FUTIMENS]) 106 HAVE_GETUMASK=1; AC_SUBST([HAVE_GETUMASK]) 107 HAVE_LCHMOD=1; AC_SUBST([HAVE_LCHMOD]) 108 HAVE_LSTAT=1; AC_SUBST([HAVE_LSTAT]) 109 HAVE_MKDIRAT=1; AC_SUBST([HAVE_MKDIRAT]) 110 HAVE_MKFIFO=1; AC_SUBST([HAVE_MKFIFO]) 111 HAVE_MKFIFOAT=1; AC_SUBST([HAVE_MKFIFOAT]) 112 HAVE_MKNOD=1; AC_SUBST([HAVE_MKNOD]) 113 HAVE_MKNODAT=1; AC_SUBST([HAVE_MKNODAT]) 114 HAVE_UTIMENSAT=1; AC_SUBST([HAVE_UTIMENSAT]) 115 REPLACE_FCHMODAT=0; AC_SUBST([REPLACE_FCHMODAT]) 116 REPLACE_FSTAT=0; AC_SUBST([REPLACE_FSTAT]) 117 REPLACE_FSTATAT=0; AC_SUBST([REPLACE_FSTATAT]) 118 REPLACE_FUTIMENS=0; AC_SUBST([REPLACE_FUTIMENS]) 119 REPLACE_LSTAT=0; AC_SUBST([REPLACE_LSTAT]) 120 REPLACE_MKDIR=0; AC_SUBST([REPLACE_MKDIR]) 121 REPLACE_MKFIFO=0; AC_SUBST([REPLACE_MKFIFO]) 122 REPLACE_MKFIFOAT=0; AC_SUBST([REPLACE_MKFIFOAT]) 123 REPLACE_MKNOD=0; AC_SUBST([REPLACE_MKNOD]) 124 REPLACE_MKNODAT=0; AC_SUBST([REPLACE_MKNODAT]) 125 REPLACE_STAT=0; AC_SUBST([REPLACE_STAT]) 126 REPLACE_UTIMENSAT=0; AC_SUBST([REPLACE_UTIMENSAT]) 127]) 128