Commit | Line | Data |
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5e8754f9 | 1 | # serial 15 |
6ec2e0f5 SDJ |
2 | |
3 | dnl From Jim Meyering. | |
4 | dnl | |
5 | dnl Check whether struct dirent has a member named d_ino. | |
6 | dnl | |
7 | ||
5e8754f9 | 8 | # Copyright (C) 1997, 1999-2001, 2003-2004, 2006-2007, 2009-2016 Free Software |
6ec2e0f5 SDJ |
9 | # Foundation, Inc. |
10 | ||
11 | # This file is free software; the Free Software Foundation | |
12 | # gives unlimited permission to copy and/or distribute it, | |
13 | # with or without modifications, as long as this notice is preserved. | |
14 | ||
15 | AC_DEFUN([gl_CHECK_TYPE_STRUCT_DIRENT_D_INO], | |
16 | [AC_REQUIRE([AC_CANONICAL_HOST]) dnl for cross-compiles | |
17 | AC_CACHE_CHECK([for d_ino member in directory struct], | |
5e8754f9 | 18 | gl_cv_struct_dirent_d_ino, |
6ec2e0f5 SDJ |
19 | [AC_RUN_IFELSE( |
20 | [AC_LANG_PROGRAM( | |
21 | [[#include <sys/types.h> | |
22 | #include <sys/stat.h> | |
23 | #include <dirent.h> | |
24 | ]], | |
25 | [[DIR *dp = opendir ("."); | |
26 | struct dirent *e; | |
27 | struct stat st; | |
28 | if (! dp) | |
29 | return 1; | |
30 | e = readdir (dp); | |
31 | if (! e) | |
5e8754f9 | 32 | return 2; |
6ec2e0f5 | 33 | if (lstat (e->d_name, &st) != 0) |
5e8754f9 | 34 | return 3; |
6ec2e0f5 | 35 | if (e->d_ino != st.st_ino) |
5e8754f9 | 36 | return 4; |
6ec2e0f5 SDJ |
37 | closedir (dp); |
38 | return 0; | |
39 | ]])], | |
40 | [gl_cv_struct_dirent_d_ino=yes], | |
41 | [gl_cv_struct_dirent_d_ino=no], | |
42 | [case "$host_os" in | |
43 | # Guess yes on glibc systems with Linux kernel. | |
44 | linux*-gnu*) gl_cv_struct_dirent_d_ino="guessing yes" ;; | |
45 | # If we don't know, assume the worst. | |
46 | *) gl_cv_struct_dirent_d_ino="guessing no" ;; | |
47 | esac | |
48 | ])]) | |
49 | case "$gl_cv_struct_dirent_d_ino" in | |
50 | *yes) | |
51 | AC_DEFINE([D_INO_IN_DIRENT], [1], | |
52 | [Define if struct dirent has a member d_ino that actually works.]) | |
53 | ;; | |
54 | esac | |
55 | ] | |
56 | ) |