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Diffstat (limited to 'm4/sys_stat_h.m4')
| -rw-r--r-- | m4/sys_stat_h.m4 | 129 |
1 files changed, 129 insertions, 0 deletions
diff --git a/m4/sys_stat_h.m4 b/m4/sys_stat_h.m4 new file mode 100644 index 0000000..ca57398 --- /dev/null +++ b/m4/sys_stat_h.m4 @@ -0,0 +1,129 @@ +# sys_stat_h.m4 serial 42 -*- Autoconf -*- +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 From Eric Blake. +dnl Provide a GNU-like <sys/stat.h>. + +AC_DEFUN_ONCE([gl_SYS_STAT_H], +[ + AC_REQUIRE([gl_SYS_STAT_H_DEFAULTS]) + + dnl Check for broken stat macros. + AC_REQUIRE([AC_HEADER_STAT]) + + gl_CHECK_NEXT_HEADERS([sys/stat.h]) + + dnl Ensure the type mode_t gets defined. + AC_REQUIRE([AC_TYPE_MODE_T]) + + dnl Whether to enable precise timestamps in 'struct stat'. + m4_ifdef([gl_WINDOWS_STAT_TIMESPEC], [ + AC_REQUIRE([gl_WINDOWS_STAT_TIMESPEC]) + ], [ + WINDOWS_STAT_TIMESPEC=0 + ]) + AC_SUBST([WINDOWS_STAT_TIMESPEC]) + + dnl Whether to ensure that struct stat.st_size is 64-bit wide. + m4_ifdef([gl_LARGEFILE], [ + AC_REQUIRE([gl_LARGEFILE]) + ], [ + WINDOWS_64_BIT_ST_SIZE=0 + ]) + AC_SUBST([WINDOWS_64_BIT_ST_SIZE]) + + dnl Define types that are supposed to be defined in <sys/types.h> or + dnl <sys/stat.h>. + AC_CHECK_TYPE([nlink_t], [], + [AC_DEFINE([nlink_t], [int], + [Define to the type of st_nlink in struct stat, or a supertype.])], + [#include <sys/types.h> + #include <sys/stat.h>]) + + 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([[#include <sys/stat.h> + ]], [chmod fchmodat fstat fstatat futimens getumask lchmod lstat + mkdirat mkfifo mkfifoat mknod mknodat stat utimensat]) + + AC_REQUIRE([AC_C_RESTRICT]) +]) + +# gl_SYS_STAT_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_SYS_STAT_MODULE_INDICATOR], +[ + dnl Ensure to expand the default settings once only. + gl_SYS_STAT_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_SYS_STAT_H_REQUIRE_DEFAULTS], +[ + m4_defun(GL_MODULE_INDICATOR_PREFIX[_SYS_STAT_H_MODULE_INDICATOR_DEFAULTS], [ + gl_UNISTD_H_REQUIRE_DEFAULTS dnl for REPLACE_FCHDIR + gl_MODULE_INDICATOR_INIT_VARIABLE([GNULIB_CHMOD]) + gl_MODULE_INDICATOR_INIT_VARIABLE([GNULIB_FCHMODAT]) + gl_MODULE_INDICATOR_INIT_VARIABLE([GNULIB_FSTAT]) + gl_MODULE_INDICATOR_INIT_VARIABLE([GNULIB_FSTATAT]) + gl_MODULE_INDICATOR_INIT_VARIABLE([GNULIB_FUTIMENS]) + gl_MODULE_INDICATOR_INIT_VARIABLE([GNULIB_GETUMASK]) + gl_MODULE_INDICATOR_INIT_VARIABLE([GNULIB_LCHMOD]) + gl_MODULE_INDICATOR_INIT_VARIABLE([GNULIB_LSTAT]) + gl_MODULE_INDICATOR_INIT_VARIABLE([GNULIB_MKDIR]) + gl_MODULE_INDICATOR_INIT_VARIABLE([GNULIB_MKDIRAT]) + gl_MODULE_INDICATOR_INIT_VARIABLE([GNULIB_MKFIFO]) + gl_MODULE_INDICATOR_INIT_VARIABLE([GNULIB_MKFIFOAT]) + gl_MODULE_INDICATOR_INIT_VARIABLE([GNULIB_MKNOD]) + gl_MODULE_INDICATOR_INIT_VARIABLE([GNULIB_MKNODAT]) + gl_MODULE_INDICATOR_INIT_VARIABLE([GNULIB_STAT]) + gl_MODULE_INDICATOR_INIT_VARIABLE([GNULIB_UTIMENSAT]) + gl_MODULE_INDICATOR_INIT_VARIABLE([GNULIB_OVERRIDES_STRUCT_STAT]) + dnl Support Microsoft deprecated alias function names by default. + gl_MODULE_INDICATOR_INIT_VARIABLE([GNULIB_MDA_CHMOD], [1]) + gl_MODULE_INDICATOR_INIT_VARIABLE([GNULIB_MDA_MKDIR], [1]) + gl_MODULE_INDICATOR_INIT_VARIABLE([GNULIB_MDA_UMASK], [1]) + ]) + m4_require(GL_MODULE_INDICATOR_PREFIX[_SYS_STAT_H_MODULE_INDICATOR_DEFAULTS]) + AC_REQUIRE([gl_SYS_STAT_H_DEFAULTS]) +]) + +AC_DEFUN([gl_SYS_STAT_H_DEFAULTS], +[ + dnl Assume proper GNU behavior unless another module says otherwise. + HAVE_FCHMODAT=1; AC_SUBST([HAVE_FCHMODAT]) + HAVE_FSTATAT=1; AC_SUBST([HAVE_FSTATAT]) + HAVE_FUTIMENS=1; AC_SUBST([HAVE_FUTIMENS]) + HAVE_GETUMASK=1; AC_SUBST([HAVE_GETUMASK]) + HAVE_LCHMOD=1; AC_SUBST([HAVE_LCHMOD]) + HAVE_LSTAT=1; AC_SUBST([HAVE_LSTAT]) + HAVE_MKDIRAT=1; AC_SUBST([HAVE_MKDIRAT]) + HAVE_MKFIFO=1; AC_SUBST([HAVE_MKFIFO]) + HAVE_MKFIFOAT=1; AC_SUBST([HAVE_MKFIFOAT]) + HAVE_MKNOD=1; AC_SUBST([HAVE_MKNOD]) + HAVE_MKNODAT=1; AC_SUBST([HAVE_MKNODAT]) + HAVE_UTIMENSAT=1; AC_SUBST([HAVE_UTIMENSAT]) + REPLACE_CHMOD=0; AC_SUBST([REPLACE_CHMOD]) + REPLACE_FCHMODAT=0; AC_SUBST([REPLACE_FCHMODAT]) + REPLACE_FSTAT=0; AC_SUBST([REPLACE_FSTAT]) + REPLACE_FSTATAT=0; AC_SUBST([REPLACE_FSTATAT]) + REPLACE_FUTIMENS=0; AC_SUBST([REPLACE_FUTIMENS]) + REPLACE_LSTAT=0; AC_SUBST([REPLACE_LSTAT]) + REPLACE_MKDIR=0; AC_SUBST([REPLACE_MKDIR]) + REPLACE_MKFIFO=0; AC_SUBST([REPLACE_MKFIFO]) + REPLACE_MKFIFOAT=0; AC_SUBST([REPLACE_MKFIFOAT]) + REPLACE_MKNOD=0; AC_SUBST([REPLACE_MKNOD]) + REPLACE_MKNODAT=0; AC_SUBST([REPLACE_MKNODAT]) + REPLACE_STAT=0; AC_SUBST([REPLACE_STAT]) + REPLACE_UTIMENSAT=0; AC_SUBST([REPLACE_UTIMENSAT]) +]) |