X-Git-Url: http://erislabs.net/gitweb/?a=blobdiff_plain;f=m4%2Fselinux-selinux-h.m4;h=20dc77c4369f9362204df5672aefe262ff33b558;hb=4097b52187106b6a2940d28968cfecd4e53f9b4e;hp=822ffa20941c1cc9414eab32a8b9bdb9d4264d0b;hpb=e68f0b9d87e199e6b673b732cf48d80367b762c2;p=gnulib.git

diff --git a/m4/selinux-selinux-h.m4 b/m4/selinux-selinux-h.m4
index 822ffa209..20dc77c43 100644
--- a/m4/selinux-selinux-h.m4
+++ b/m4/selinux-selinux-h.m4
@@ -1,5 +1,5 @@
-# serial 1   -*- Autoconf -*-
-# Copyright (C) 2006, 2007 Free Software Foundation, Inc.
+# serial 3   -*- Autoconf -*-
+# Copyright (C) 2006, 2007, 2009 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.
@@ -9,9 +9,37 @@
 
 AC_DEFUN([gl_HEADERS_SELINUX_SELINUX_H],
 [
-  # Check for <selinux/selinux.h>,
+  AC_REQUIRE([gl_LIBSELINUX])
   AC_CHECK_HEADERS([selinux/selinux.h],
 		   [SELINUX_SELINUX_H=],
 		   [SELINUX_SELINUX_H=selinux/selinux.h])
   AC_SUBST([SELINUX_SELINUX_H])
+
+  case "$ac_cv_search_setfilecon:$ac_cv_header_selinux_selinux_h" in
+    no:*) # already warned
+      ;;
+    *:no)
+      AC_MSG_WARN([libselinux was found but selinux/selinux.h is missing.])
+      AC_MSG_WARN([AC_PACKAGE_NAME will be compiled without SELinux support.])
+  esac
+])
+
+AC_DEFUN([gl_LIBSELINUX],
+[
+  AC_REQUIRE([AC_CANONICAL_HOST])
+  AC_REQUIRE([AC_CANONICAL_BUILD])
+  LIB_SELINUX=
+  gl_save_LIBS=$LIBS
+  AC_SEARCH_LIBS([setfilecon], [selinux],
+                 [test "$ac_cv_search_setfilecon" = "none required" ||
+                  LIB_SELINUX=$ac_cv_search_setfilecon])
+  AC_SUBST([LIB_SELINUX])
+  LIBS=$gl_save_LIBS
+
+  # Warn if SELinux is found but libselinux is absent;
+  if test "$ac_cv_search_setfilecon" = no &&
+     test "$host" = "$build" && test -d /selinux; then
+    AC_MSG_WARN([This system supports SELinux but libselinux is missing.])
+    AC_MSG_WARN([AC_PACKAGE_NAME will be compiled without SELinux support.])
+  fi
 ])