Imported Upstream version 1.4

[debian/gzip] / m4 / d-ino.m4

diff --git a/m4/d-ino.m4 b/m4/d-ino.m4
new file mode 100644 (file)
index 0000000..b019ae5
--- /dev/null
+++ b/m4/d-ino.m4
@@ -0,0 +1,41 @@
+# serial 11
+
+dnl From Jim Meyering.
+dnl
+dnl Check whether struct dirent has a member named d_ino.
+dnl
+
+# Copyright (C) 1997, 1999-2001, 2003-2004, 2006-2007, 2009-2010 Free Software
+# Foundation, Inc.
+
+# This file is free software; the Free Software Foundation
+# gives unlimited permission to copy and/or distribute it,
+# with or without modifications, as long as this notice is preserved.
+
+AC_DEFUN([gl_CHECK_TYPE_STRUCT_DIRENT_D_INO],
+  [AC_CACHE_CHECK([for d_ino member in directory struct],
+                  gl_cv_struct_dirent_d_ino,
+     [AC_RUN_IFELSE(
+        [AC_LANG_PROGRAM(
+           [[#include <sys/types.h>
+             #include <sys/stat.h>
+             #include <dirent.h>
+           ]],
+           [[DIR *dp = opendir (".");
+             struct dirent *e;
+             struct stat st;
+             if (! dp)
+               return 1;
+             e = readdir (dp);
+             return ! (e
+                       && stat (e->d_name, &st) == 0
+                       && e->d_ino == st.st_ino);]])],
+            [gl_cv_struct_dirent_d_ino=yes],
+            [gl_cv_struct_dirent_d_ino=no],
+            [gl_cv_struct_dirent_d_ino=no])])
+   if test $gl_cv_struct_dirent_d_ino = yes; then
+     AC_DEFINE([D_INO_IN_DIRENT], [1],
+       [Define if struct dirent has a member d_ino that actually works.])
+   fi
+  ]
+)