] )
])
-#serial 57 -*- autoconf -*-
+#serial 58 -*- autoconf -*-
dnl Misc type-related macros for fileutils, sh-utils, textutils.
AC_FUNC_OBSTACK
AC_FUNC_STRTOD
+ AC_REQUIRE([UTILS_SYS_OPEN_MAX])
# See if linking `seq' requires -lm.
# It does on nearly every system. The single exception (so far) is
]
)
-#serial 13
+#serial 14
dnl Initially derived from code in GNU grep.
dnl Mostly written by Jim Meyering.
if (re_match (®ex, "an", 2, 0, ®s) != 2)
exit (1);
+ memset (®ex, 0, sizeof (regex));
+ s = re_compile_pattern ("x", 1, ®ex);
+ if (s)
+ exit (1);
+
+ /* The version of regex.c in e.g. GNU libc-2.2.93 didn't
+ work with a negative RANGE argument. */
+ if (re_search (®ex, "wxy", 3, 2, -2, ®s) != 1)
+ exit (1);
+
exit (0);
}
],
[Define if getcwd (NULL, 0) allocates memory for result.])
fi])
-#serial 2
+#serial 4
dnl Find out how to get the file descriptor associated with an open DIR*.
dnl From Jim Meyering
AC_DEFUN([UTILS_FUNC_DIRFD],
[
+ dnl Work around a bug of AC_EGREP_CPP in autoconf-2.57.
+ AC_REQUIRE([AC_PROG_CPP])
+ AC_REQUIRE([AC_PROG_EGREP])
+
AC_HEADER_DIRENT
dirfd_headers='
#if HAVE_DIRENT_H
ac_cv_sys_dir_fd_member_name=$ac_expr
]
)
- if test $ac_cv_have_decl_dirfd = -1; then
+ if test $ac_cv_have_decl_dirfd = no; then
AC_DEFINE_UNQUOTED(DIR_FD_MEMBER_NAME,
$ac_cv_sys_dir_fd_member_name,
[the name of the file descriptor member of DIR])
#serial 1
# Use the replacement ftw.c if the one in the C library is inadequate or buggy.
+# For now, we always use the code in lib/ because libc doesn't have the FTW_DCH
+# or FTW_DCHP that we need. Arrange to use lib/ftw.h. And since that
+# implementation uses tsearch.c/tdestroy, add tsearch.o to the list of
+# objects and arrange to use lib/search.h if necessary.
# From Jim Meyering
AC_DEFUN([AC_FUNC_FTW],
# see if we'll also need the replacement tsearch.c.
AC_CHECK_FUNC([tdestroy], , [need_tdestroy=1])
- AC_CACHE_CHECK([for working GNU ftw], ac_cv_func_ftw_working,
+ AC_CACHE_CHECK([for ftw/FTW_CHDIR that informs callback of failed chdir],
+ ac_cv_func_ftw_working,
[
# The following test would fail prior to glibc-2.3.2, because `depth'
- # would be 2 rather than 4.
+ # would be 2 rather than 4. Of course, now that we require FTW_DCH
+ # and FTW_DCHP, this test fails even with GNU libc's fixed ftw.
mkdir -p conftest.dir/a/b/c
AC_RUN_IFELSE([AC_LANG_SOURCE([[
#include <string.h>
int
main ()
{
+ /* Require these symbols, too. */
+ int d1 = FTW_DCH;
+ int d2 = FTW_DCHP;
+
int err = nftw ("conftest.dir", cb, 30, FTW_PHYS | FTW_MOUNT | FTW_CHDIR);
exit ((err == 0 && depth == 4) ? 0 : 1);
}
fi
])
+#serial 1
+# Determine approximately how many files may be open simultaneously
+# in one process. This is approximate, since while running this test,
+# the configure script already has a few files open.
+# From Jim Meyering
+
+AC_DEFUN([UTILS_SYS_OPEN_MAX],
+[
+ AC_CACHE_CHECK([determine how many files may be open simultaneously],
+ utils_cv_sys_open_max,
+ [
+ AC_RUN_IFELSE([AC_LANG_SOURCE([[
+#include <stdio.h>
+#include <stdlib.h>
+#include <unistd.h>
+ int
+ main ()
+ {
+ FILE *result = fopen ("conftest.omax", "w");
+ int i = 1;
+ /* Impose an arbitrary limit, in case some system has no
+ effective limit on the number of simultaneously open files. */
+ while (i < 30000)
+ {
+ FILE *s = fopen ("conftest.op", "w");
+ if (!s)
+ break;
+ ++i;
+ }
+ fprintf (result, "%d\n", i);
+ exit (fclose (result) == EOF);
+ }
+ ]])],
+ [utils_cv_sys_open_max=`cat conftest.omax`],
+ [utils_cv_sys_open_max='internal error in open-max.m4'],
+ [utils_cv_sys_open_max='cross compiling run-test in open-max.m4'])])
+
+ AC_DEFINE_UNQUOTED([UTILS_OPEN_MAX],
+ $utils_cv_sys_open_max,
+ [the maximum number of simultaneously open files per process])
+])
+
# codeset.m4 serial AM1 (gettext-0.10.40)
dnl Copyright (C) 2000-2002 Free Software Foundation, Inc.
dnl This file is free software, distributed under the terms of the GNU
projects / platform / upstream / coreutils.git / commitdiff