id: adjust/restrict smack support to newer versions of libsmack

[platform/upstream/coreutils.git] / m4 / jm-macros.m4

diff --git a/m4/jm-macros.m4 b/m4/jm-macros.m4
index 016172f..649a344 100644 (file)
--- a/m4/jm-macros.m4
+++ b/m4/jm-macros.m4
@@ -2,7 +2,7 @@
 
 dnl Misc type-related macros for coreutils.
 
-# Copyright (C) 1998-2012 Free Software Foundation, Inc.
+# Copyright (C) 1998-2013 Free Software Foundation, Inc.
 
 # This program is free software: you can redistribute it and/or modify
 # it under the terms of the GNU General Public License as published by
@@ -64,7 +64,7 @@ AC_DEFUN([coreutils_MACROS],
   # Used by sort.c.
   AC_CHECK_FUNCS_ONCE([nl_langinfo])
   # Used by timeout.c
-  AC_CHECK_FUNCS_ONCE([setrlimit])
+  AC_CHECK_FUNCS_ONCE([setrlimit prctl])
 
   # Used by tail.c.
   AC_CHECK_FUNCS([inotify_init],
@@ -141,6 +141,27 @@ AC_DEFUN([coreutils_MACROS],
   fi
   AC_SUBST([LIB_CAP])
 
+  # Check whether libsmack is available
+  LIB_SMACK=
+  AC_ARG_ENABLE([libsmack],
+    AC_HELP_STRING([--disable-libsmack], [disable libsmack support]))
+  if test "X$enable_libsmack" != "Xno"; then
+    AC_CHECK_LIB([smack], [smack_new_label_from_self],
+      [AC_CHECK_LIB([smack], [smack_new_label_from_path],
+        [AC_CHECK_HEADER([sys/smack.h],
+          [LIB_SMACK=-lsmack
+           AC_DEFINE([HAVE_SMACK], [1], [libsmack usability])]
+        )])])
+    if test "X$LIB_SMACK" = "X"; then
+      if test "X$enable_libsmack" = "Xyes"; then
+        AC_MSG_ERROR([libsmack library was not found or not usable])
+      fi
+    fi
+  else
+    AC_MSG_WARN([libsmack support disabled by user])
+  fi
+  AC_SUBST([LIB_SMACK])
+
   # See if linking 'seq' requires -lm.
   # It does on nearly every system.  The single exception (so far) is
   # BeOS which has all the math functions in the normal runtime library