Ensure HOST_NAME_MAX as part of the gethostname module.

[gnulib.git] / m4 / sys_stat_h.m4

diff --git a/m4/sys_stat_h.m4 b/m4/sys_stat_h.m4
index c432ac2..20c82ed 100644 (file)
--- a/m4/sys_stat_h.m4
+++ b/m4/sys_stat_h.m4
@@ -1,5 +1,5 @@
-# sys_stat_h.m4 serial 3   -*- Autoconf -*-
-dnl Copyright (C) 2006 Free Software Foundation, Inc.
+# sys_stat_h.m4 serial 10   -*- Autoconf -*-
+dnl Copyright (C) 2006-2008 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.
@@ -9,24 +9,51 @@ dnl Test whether <sys/stat.h> contains lstat and mkdir or must be substituted.
 
 AC_DEFUN([gl_HEADER_SYS_STAT_H],
 [
+  AC_REQUIRE([gl_SYS_STAT_H_DEFAULTS])
+
   dnl Check for lstat.  Systems that lack it (mingw) also lack symlinks, so
   dnl stat is a good replacement.
   AC_CHECK_FUNCS_ONCE([lstat])
-
-  dnl Check for mkdir.  Mingw has _mkdir(name) in the nonstandard <io.h>
-  dnl instead.
-  AC_CHECK_DECLS([mkdir], [], [], [#include <sys/stat.h>])
-
-  SYS_STAT_H=
-  if test $ac_cv_func_lstat:$ac_cv_have_decl_mkdir != yes:yes ; then
-    gl_ABSOLUTE_HEADER([sys/stat.h])
-    ABSOLUTE_SYS_STAT_H=\"$gl_cv_absolute_sys_stat_h\"
-    AC_CHECK_HEADERS([io.h])
-    AC_REQUIRE([AC_C_INLINE])
-    SYS_STAT_H='sys/stat.h'
+  if test $ac_cv_func_lstat = yes; then
+    HAVE_LSTAT=1
   else
-    ABSOLUTE_SYS_STAT_H=\"no/such/file/sys/stat.h\"
+    HAVE_LSTAT=0
   fi
-  AC_SUBST([ABSOLUTE_SYS_STAT_H])
+  AC_SUBST([HAVE_LSTAT])
+
+  dnl For the mkdir substitute.
+  AC_REQUIRE([AC_C_INLINE])
+
+  dnl Check for broken stat macros.
+  AC_REQUIRE([AC_HEADER_STAT])
+
+  gl_CHECK_NEXT_HEADERS([sys/stat.h])
+  SYS_STAT_H='sys/stat.h'
   AC_SUBST([SYS_STAT_H])
+
+  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>])
+
 ]) # gl_HEADER_SYS_STAT_H
+
+AC_DEFUN([gl_SYS_STAT_MODULE_INDICATOR],
+[
+  dnl Use AC_REQUIRE here, so that the default settings are expanded once only.
+  AC_REQUIRE([gl_SYS_STAT_H_DEFAULTS])
+  GNULIB_[]m4_translit([$1],[abcdefghijklmnopqrstuvwxyz./-],[ABCDEFGHIJKLMNOPQRSTUVWXYZ___])=1
+])
+
+AC_DEFUN([gl_SYS_STAT_H_DEFAULTS],
+[
+  GNULIB_LCHMOD=0; AC_SUBST([GNULIB_LCHMOD])
+  GNULIB_LSTAT=0;  AC_SUBST([GNULIB_LSTAT])
+  dnl Assume proper GNU behavior unless another module says otherwise.
+  HAVE_LCHMOD=1;   AC_SUBST([HAVE_LCHMOD])
+  REPLACE_LSTAT=0; AC_SUBST([REPLACE_LSTAT])
+  REPLACE_MKDIR=0; AC_SUBST([REPLACE_MKDIR])
+])